Novel photoelectric lighting mode and component adopting same

Abstract

The invention discloses a novel photoelectric illumination mode. According to the novel photoelectric illumination mode, a self-luminous decorative sheet is laid on a main body capable of carrying objects for luminous illumination. The invention further discloses a component adopting the lighting mode. Compared with the prior art, the self-luminous decorative sheet with the decoration function and the light-emitting and lighting function is adopted to be paved on the object-carrying main body, the illumination function and the decoration function are achieved, and after the self-luminous decorative sheet is paved on the object-carrying main body in the form of the sheet, the defect that a light source is dazzling when an existing LED lamp is used for lighting can be avoided.

Description

Technical Field

[0001] The invention relates to the field of lighting technology, and in particular to a novel photoelectric lighting method and a component using the lighting method. Background Art

[0002] The lighting method of existing buildings is usually to install lamps on the ceiling or the top of the wall. The lamps are connected to the indoor power supply system, and the control switch controls whether the power is on or not, thereby controlling whether the lamps emit light or not. Building exterior walls, outdoor billboards, and streets are also illuminated in this way. This lighting method has the following defects: first, it requires labor to install lamps; second, the installation of lamps takes up space, and in terms of appearance, the surface is uneven and unsightly after the lamps are installed. If the lamps are embedded by leaving holes, more labor is consumed.

[0003] Not only buildings, but also many products in many sub-fields of industry or life need lighting. For example, light strips are installed in wardrobes to illuminate users, small lights are installed inside cars to illuminate the interior, and so on. It can be seen that lighting is needed in many fields and life scenes. How to achieve lighting while saving labor, saving space, and enhancing the sense of art and technology has become a new research direction. Summary of the invention

[0004] The purpose of the present invention is to overcome the defects of the above-mentioned prior art method of using lamps for lighting, which occupies space, affects aesthetics, and consumes manpower, and to provide a new photoelectric lighting method. Using this method for lighting can save space and installation labor, and more importantly, enhance the artistic and technological sense of lighting.

[0005] To achieve the above object, the present invention adopts the following technical solution:

[0006] A new type of photoelectric lighting method, which uses self-luminous decorative sheets to be laid on the main body of the loadable object. The self-luminous decorative sheets have both the function of emitting light and the function of lighting, and also have the function of decoration. After being laid on the main body of the loadable object in the form of sheets, it can also avoid the defect of dazzling light source when existing LED lamps are illuminated.

[0007] Furthermore, the self-luminous decorative sheet is a flexible sheet, which includes a flexible decorative surface layer, a luminescent material layer and a flexible base layer from the outside to the inside, the flexible decorative surface layer and the flexible base layer are both low-temperature solidification molding layers, and the luminescent material layer is a luminescent material layer with a perovskite film as the luminescent layer. The luminescent material layer can also be made into various patterns and shapes, such as butterfly shape, heart shape, etc., and the corresponding pattern shape is formed by the illumination when emitting light, and this luminescent pattern shape is emitted from the inside of the self-luminous decorative sheet, which has a more artistic and mysterious feeling against the background of the flexible decorative surface layer.

[0008] Furthermore, the flexible substrate layer also includes an ITO thin film layer fixed on the low-temperature curing molding layer, and the luminescent material layer includes: a first hole transport layer, a first electron transport layer, and a luminescent layer sandwiched between the first hole transport layer and the first electron transport layer, the luminescent layer is an I-Br-Cl ternary hybrid perovskite thin film luminescent layer, the first hole transport layer is provided with a P electrode, and the first electron transport layer is provided with an N electrode.

[0009] Furthermore, the I-Br-Cl ternary hybrid perovskite film layer is MAPb(I 0.80 Br 0.05 Cl 0.15 )3、MAPb(I 0.85 Br 0.05 Cl 0.10 )3、MAPb(I 0.90 Br 0.02 Cl 0.08 ) Any one of 3.

[0010] Furthermore, the thickness of the I-Br-Cl ternary hybrid perovskite film layer is 200-500 nm.

[0011] Furthermore, the first hole transport layer is LaNiO3, and the first electron transport layer is any one of TiO2 and SnO2.

[0012] The low-temperature curing forming layer comprises 100 parts of inorganic powder, 10-30 parts of acrylic polymer emulsion and / or redispersible latex powder by weight, the thickness of the flexible base layer is 10-20 mm, the thickness of the flexible finishing layer is 3-10 mm, and a pattern is printed on the surface of the flexible decorative surface layer.

[0013] Furthermore, the method for preparing the self-luminous decorative sheet comprises the following steps:

[0014] Prepare low-temperature curing molding slurry: take 100 parts of inorganic powder, add 10-30 parts of acrylic polymer emulsion and / or redispersible latex powder, and then add water to mix;

[0015] Preparation of a flexible base layer: coating a low-temperature curing molding slurry on a molding carrier, and curing the slurry at a temperature of 80 to 300° C. to obtain a flexible base layer;

[0016] Preparing an ITO thin film layer on the flexible substrate layer;

[0017] Preparing a light-emitting material layer on the ITO thin film layer: sequentially forming the first hole transport layer, the light-emitting layer, and the first electron transport layer on the ITO thin film layer; or sequentially forming the first electron transport layer, the light-emitting layer, and the first hole transport layer on the ITO thin film layer, and providing a P electrode on the hole transport layer and an N electrode on the electron transport layer;

[0018] Preparation of flexible decorative surface layer: low-temperature curing molding slurry is coated on the light-emitting device and cured at a temperature of 80 to 300°C.

[0019] Furthermore, preparing an ITO thin film layer on the flexible substrate layer includes the following steps: in a magnetron sputtering device, an ITO target material is installed at target position A and a Ti target material is installed at target position B; then vacuuming is performed, and argon gas is input, the gas pressure in the sputtering chamber of the magnetron sputtering device is adjusted, the sputtering power, time and temperature are set, and the ITO target material and the Ti target material are sputtered simultaneously to obtain a Ti-doped ITO thin film on the flexible substrate layer.

[0020] Furthermore, the method for preparing the light-emitting material layer on the ITO thin film layer adopts the following method 1 or method 2:

[0021] Method 1: sequentially forming the first hole transport layer, the light emitting layer, and the first electron transport layer on the Ti-doped ITO thin film layer:

[0022] Using magnetron sputtering equipment, LaNiO3 is used as a target material to generate a LaNiO3 film on a Ti-doped ITO film layer, and then heated and sputtered a P electrode;

[0023] Prepare four solutes, PbI2, MAI, PbBr2, and MACl, according to the required molar ratio, and then dissolve them in DMF solvent, stir until completely dissolved, prepare I-Br-Cl ternary hybrid perovskite precursor, and introduce methylamine gas, spin-coat on LaNiO3 film, and then anneal at 80-90°C for 10-15min to form I-Br-Cl ternary hybrid perovskite light-emitting layer;

[0024] Spin-coat TiO2 or SnO2 slurry solution on the I-Br-Cl ternary hybrid perovskite film layer, degrade at 80-90°C for 5-105min, and then sputter N electrode;

[0025] Method 2: sequentially forming the first electron transport layer, the light emitting layer, and the first hole transport layer on the Ti-doped ITO thin film layer:

[0026] Spin-coat TiO2 or SnO2 slurry solution on the Ti-doped ITO thin film layer, degrade it at 80-90°C for 5-10 minutes after spin coating to form the first electron transport layer, and then sputter the N electrode;

[0027] Prepare four solutes of PbI2, MAI, PbBr2 and MACl according to the required molar ratio, then dissolve them in DMF solvent, stir until completely dissolved, prepare I-Br-Cl ternary hybrid perovskite precursor, introduce methylamine gas, spin-coat on the first electron transport layer, and then anneal at 80-90°C for 10-15min to form an I-Br-Cl ternary hybrid perovskite film layer;

[0028] Using magnetron sputtering equipment and LaNiO3 as the target material, LaNiO3 film is generated on the I-Br-Cl ternary hybrid perovskite film layer, and then heated and sputtered P electrode.

[0029] The present invention also provides a component that adopts the above-mentioned new photoelectric lighting method, the component includes a load-bearing body, the surface of the load-bearing body is paved with the self-luminous decorative sheet, and the load-bearing body includes building interior walls, building exterior walls, floors, ceilings, desktops, cabinet surfaces, electronic parts housings, mechanical parts housings, automobile outer shells, and automobile interior accessories.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] 1. The lighting method of the present invention is to use self-luminous decorative sheets to lay on the load-bearing body. The self-luminous decorative sheets have both the function of luminescence and lighting, and the function of decoration. One-time laying realizes the functions of decoration and lighting, saving space and reducing the time and manpower for the two installations of decoration and lighting. After being laid on the load-bearing body in the form of sheets, the defect of dazzling light source during existing LED lighting can also be avoided.

[0032] 2. The self-luminous decorative sheet of the present invention has a luminescent material layer sandwiched between a flexible base layer and a flexible decorative surface layer. The luminescent material layer is formed by using an I-Br-Cl ternary hybrid perovskite thin film layer as the luminescent layer, LaNiO3 as a hole transport layer, and TiO2 and SnO2 as electron transport layers. The luminous flux, luminous intensity and brightness of the luminescent material layer sandwiched between the flexible base layer and the flexible decorative surface layer can reach the luminous lighting level of LED lamps, and compared with LED lighting, the glare of the light source is avoided, so that the entire self-luminous decorative sheet can be used directly as a lamp for lighting in addition to its decorative function. Objects paved with the self-luminous decorative sheet, such as houses, desks, and cabinets, need to be installed with lamps for lighting, so that the surface of the decorative object is more concise and generous, and at the same time has a sense of science and technology and art.

[0033] 3. The self-luminous decorative sheet of the present invention is endowed with the function of lighting by the innovation of the material itself. After being connected to the control center, driven by the external circuit, electrons and holes are respectively injected into the I-Br-Cl ternary hybrid perovskite film layer through the first electron transport layer and the first hole transport layer, and then the electrons and holes meet in the I-Br-Cl ternary hybrid perovskite film layer to undergo radiation recombination to generate photons. Since the material itself is relied upon for luminous lighting and the material is to be used for decorating buildings, the stability of the luminescent material layer is very important. The flexible decorative surface material of the present invention still maintains good luminescent performance after artificial aging treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, a brief introduction is given to the drawings required for describing the embodiments.

[0035] Figure 1 This is a schematic diagram of the structure of the self-luminous decorative sheet of Example 1;

[0036] Figure 2 is a schematic structural diagram of the light-emitting layer of Example 1;

[0037] Figure 3 This is a schematic structural diagram of the self-luminous decorative sheet of Example 2;

[0038] Figure 4 This is the XRD pattern of the I-Br-Cl ternary hybrid perovskite film layer;

[0039] Figure 5 This is the PL spectrum of the I-Br-Cl ternary hybrid perovskite thin film layer. DETAILED DESCRIPTION

[0040] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0041] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0042] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0043] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] In the present invention, unless otherwise clearly specified and limited, the terms "including" or "having" are intended to specify the existence of features, quantities, steps, operations, elements, parts or combinations thereof, but are not used to exclude the existence or possible addition of one or more other features, quantities, steps, operations, elements, parts or combinations thereof.

[0045] In the present invention, the term "low temperature curing forming layer" refers to a coating formed by curing at a temperature of 80 to 300° C. after being coated with a slurry having a curing temperature of 80-300° C. The slurry having a curing temperature of 80 to 300° C. is, for example, a resin slurry, an inorganic powder composite slurry, and the like.

[0046] The present invention discloses a novel photoelectric lighting method, which uses a self-luminous decorative sheet to be laid on a loadable body. The self-luminous decorative sheet is a flexible sheet, which includes a flexible decorative surface layer, a luminescent material layer and a flexible base layer from the outside to the inside. The flexible decorative surface layer and the flexible base layer are both low-temperature curing molding layers, and the luminescent material layer is a luminescent material layer with a perovskite film as the luminescent layer.

[0047] The present invention is further described in detail below through specific implementation examples.

[0048] Example 1

[0049] A novel photoelectric lighting method is to use a self-luminous decorative sheet to be laid on a loadable body. The self-luminous decorative sheet is a flexible sheet, which includes a flexible decorative surface layer, a luminescent material layer and a flexible base layer from the outside to the inside. The flexible decorative surface layer and the flexible base layer are both low-temperature curing molding layers, and the luminescent material layer is a luminescent material layer with a perovskite film as the luminescent layer.

[0050] Please refer to Figure 1 , the self-luminous decorative sheet comprises:

[0051] A flexible base layer 10;

[0052] ITO thin film layer 20: arranged on the flexible substrate layer;

[0053] A light-emitting material layer: arranged on the ITO thin film layer 20, including a first hole transport layer 31, a first electron transport layer 51 and a light-emitting layer 41 sandwiched between the first hole transport layer and the first electron transport layer, wherein the light-emitting layer 41 is an I-Br-Cl ternary hybrid perovskite thin film layer, the first hole transport layer 31 is provided with a P electrode, and the first electron transport layer 51 is provided with an N electrode;

[0054] Flexible decorative surface layer 60: arranged on the luminescent material layer;

[0055] The flexible base layer and the flexible decorative surface layer are both low-temperature curing molding layers.

[0056] Specifically, the I-Br-Cl ternary hybrid perovskite film layer is MAPb(I 0.80 Br 0.05 Cl 0.15 )3.MAPb(I 0.85 Br 0.05 Cl 0.10 )3、MAPb(I 0.90 Br 0.02 Cl 0.08 ) 3. The thickness of the I-Br-Cl ternary hybrid perovskite film layer is 200-500nm.

[0057] Specifically, the first hole transport layer is LaNiO3, and the first electron transport layer is any one of TiO2 and SnO2.

[0058] Please also refer to Figure 2 In this embodiment, the I-Br-Cl ternary hybrid perovskite film layer is butterfly-shaped. When the self-luminous decorative sheet is connected to the power supply, the I-Br-Cl ternary hybrid perovskite film layer emits light to form a butterfly-shaped light source, which emits light through the flexible decorative surface layer. Therefore, from the outside, it is a butterfly-shaped light source with a sense of art and technology.

[0059] In this embodiment, the low-temperature curing molding layer includes 100 parts of inorganic powder, 10-30 parts of acrylic polymer emulsion and / or redispersible latex powder by weight, the thickness of the flexible base layer is 10-20 mm, the thickness of the flexible decorative surface layer is 3-10 mm, and a pattern is printed on the surface of the flexible decorative surface layer.

[0060] The method for preparing the self-luminous decorative sheet of this embodiment comprises the following steps:

[0061] S10, equipped with low temperature curing molding slurry:

[0062] Take 100 parts of inorganic powder, add 10-30 parts of acrylic polymer emulsion and / or redispersible latex powder, and then add water to mix. The inorganic powder is selected from one or more of waste building cement block powder, waste powder from stone factory, coal slag powder, waste powder from ceramic factory, sand and soil. The inorganic powder is modified by a surfactant coupling agent, and the amount of the surfactant coupling agent is 0.3-2% of the total mass of the inorganic powder. The surfactant coupling agent can be selected from one or more of rare earth coupling agent, aluminate coupling agent or titanate coupling agent. The modification method of the inorganic powder is: after heating the inorganic powder to 80-110°C, add the surfactant coupling agent and stir evenly, and obtain the modified inorganic powder after drying.

[0063] S20, preparing a flexible base layer:

[0064] The low-temperature curing molding slurry is coated on a molding carrier and cured at a temperature of 80 to 300° C. to obtain a flexible base layer.

[0065] S30, preparing an ITO thin film layer on the flexible substrate layer:

[0066] A flexible substrate layer is prepared on the flexible substrate layer using a magnetron oil injection device: after turning on the magnetron sputtering device, the flexible substrate layer is placed on the substrate table, an ITO target is installed at target position A, and a Ti target is installed at target position B; target A is 80-100 mm away from the flexible substrate layer, and target B is 50-70 mm away from the flexible substrate layer, then vacuum is applied, and argon gas is introduced, the gas pressure in the sputtering chamber of the magnetron sputtering device is adjusted to 1 Pa, the sputtering power is set to 120 W, the time is 5 min, and the temperature is 110°C, and the ITO target and the Ti target are sputtered simultaneously to obtain a Ti-doped ITO film on the flexible substrate layer.

[0067] S40, preparing a light-emitting material layer on the ITO thin film layer: sequentially forming the first hole transport layer, the light-emitting layer, and the first electron transport layer on the ITO thin film layer, and providing a P electrode on the hole transport layer and an N electrode on the electron transport layer, the specific steps are:

[0068] Using magnetron sputtering equipment and LaNiO3 as a target, a LaNiO3 film with a thickness of 40-50nm is generated on the Ti-doped ITO film layer, and then heated and sputtered to form a P electrode.

[0069] Prepare the four solutes of PbI2, MAI, PbBr2, and MACl according to the required molar ratio, then dissolve them in DMF solvent, stir until completely dissolved, prepare I-Br-Cl ternary hybrid perovskite precursor, and introduce methylamine gas, spin-coat on LaNiO3 film, and then anneal at 80-90℃ for 10-15min to form I-Br-Cl ternary hybrid perovskite film layer. For example: the molar ratio of the four solutes of PbI2, MAI, PbBr2, and MACl is 0.925:0.55:0.075:0.45, and the prepared I-Br-Cl ternary hybrid perovskite precursor is MAPb(I 0.80 Br 0.05 Cl 0.15 )3; the molar ratio of the four solutes is 0.925:0.7:0.075:0.3, and the prepared I-Br-Cl ternary hybrid perovskite precursor is MAPb(I 0.85 Br 0.05 Cl 0.10 )3; the molar ratio of the four solutes is 0.97:0.76:0.03:0.24, and the prepared I-Br-Cl ternary hybrid perovskite precursor is MAPb(I 0.90 Br 0.02 Cl 0.08 )3.

[0070] A TiO2 or SnO2 slurry solution is spin-coated on the I-Br-Cl ternary hybrid perovskite film layer, and after spin coating, it is degraded at 80-90° C. for 5-105 minutes to form a first electron transport layer, and then an N electrode is sputtered.

[0071] S50, preparing a flexible decorative surface layer:

[0072] The low-temperature curing slurry is coated on the first electron transport layer and cured at a temperature of 80 to 300° C.

[0073] In order to achieve a better decorative effect, patterns can also be printed on the surface of the flexible decorative surface layer by printing or spraying.

[0074] The self-luminous decorative sheet of this embodiment can be used on various components, including a load-bearing body, the surface of which is paved with the self-luminous decorative sheet. The load-bearing body includes buildings such as indoor and outdoor walls, ceilings, desktops, cabinets, electronic parts housings, mechanical parts housings, automobile outer shells, automobile interior accessories, and outdoor billboards.

[0075] Example 2

[0076] The difference between this embodiment and embodiment 1 is that in this embodiment, the light-emitting material is connected by the first electron transport layer and the Ti-doped ITO thin film layer.

[0077] Please refer to Figure 3 In this embodiment, the self-luminous decorative sheet includes, from bottom to top, a flexible substrate layer 10, a Ti-doped ITO thin film layer 20, a first electron transport layer 51, an I-Br-Cl ternary hybrid perovskite thin film layer 41, a first hole transport layer 31, and a flexible finishing layer 60.

[0078] The method for preparing the flexible decorative surface material with lighting function in this embodiment is as follows:

[0079] S10, equipped with low temperature curing molding slurry.

[0080] S20, preparing a flexible base layer.

[0081] S30, preparing an ITO thin film layer on the flexible substrate layer.

[0082] S40, preparing a light-emitting material layer on the ITO thin film layer: sequentially forming the first electron transport layer, the light-emitting layer, and the first hole transport layer on the ITO thin film layer, and providing a P electrode on the hole transport layer and an N electrode on the electron transport layer, the specific steps are:

[0083] The TiO2 or SnO2 slurry solution is spin-coated on the ITO thin film layer, and then degraded at 80-90°C for 5-105 minutes to form a first electron transport layer, and then the N electrode is sputtered.

[0084] Prepare the four solutes of PbI2, MAI, PbBr2, and MACl according to the required molar ratio, then dissolve them in DMF solvent, stir until completely dissolved, prepare I-Br-Cl ternary hybrid perovskite precursor, and introduce methylamine gas, spin-coat on the first electron transport layer, and then anneal at 80-90°C for 10-15min to form an I-Br-Cl ternary hybrid perovskite film layer. For example: the molar ratio of the four solutes of PbI2, MAI, PbBr2, and MACl is 0.925:0.55:0.075:0.45, and the prepared I-Br-Cl ternary hybrid perovskite precursor is MAPb(I 0.80Br 0.05 Cl 0.15 )3; the molar ratio of the four solutes is 0.925:0.7:0.075:0.3, and the prepared I-Br-Cl ternary hybrid perovskite precursor is MAPb(I 0.85 Br 0.05 Cl 0.10 )3; the molar ratio of the four solutes is 0.97:0.76:0.03:0.24, and the prepared I-Br-Cl ternary hybrid perovskite precursor is MAPb(I 0.90 Br 0.02 Cl 0.08 )3.

[0085] Using magnetron sputtering equipment and LaNiO3 as the target material, a LaNiO3 film with a thickness of 40-50nm is generated on the I-Br-Cl ternary hybrid perovskite film layer, and then heated and sputtered to form a P electrode.

[0086] S50, preparing a flexible decorative surface layer.

[0087] In order to achieve a better decorative effect, patterns are printed on the surface of the flexible decorative surface layer by printing or spraying.

[0088] Performance Test:

[0089] 1. The luminescent layer MAPb(I 0.80 Br 0.05 Cl 0.15 )3、MAPb(I 0.85 Br 0.05 Cl 0.10 )3、MAPb(I 0.90 Br 0.02 Cl 0.08 The XRD pattern of )3 is shown in the attached Figure 4 As shown. Figure 4 It can be seen that the light-emitting layer film has obvious diffraction peaks, corresponding to the (100), (200) and (211) crystal planes, and the surface MAPb(I 0.80 Br 0.05 Cl 0.15 )3、MAPb(I 0.85 Br 0.05 Cl 0.10 )3、MAPb(I 0.90 Br 0.02 Cl 0.08 )3 The light-emitting layer has a cubic crystal structure, MAPb(I 0.85 Br 0.05 Cl 0.10 )3 has a high diffraction peak, a sharp peak and a small half-peak width, indicating that it has a high degree of crystallinity and good quality.

[0090] 2. Light-emitting layer MAPb(I 0.80 Br 0.05 Cl 0.15 )3、MAPb(I 0.85 Br 0.05 Cl 0.10 )3、MAPb(I 0.90 Br 0.02 Cl 0.08 The PL spectrum of )3 is shown in the attached Figure 5 As shown. Figure 5 It can be seen that the photoluminescence spectrum of the luminescent layer is normally distributed, the two sides of the curve are approximately symmetrical about the luminescence peak, and MAPb(I 0.80 Br 0.05 Cl 0.15 )3 has the best luminous intensity, reaching over 300,000.

[0091] 3. Stability test of self-luminous decorative sheet:

[0092] The prepared light-emitting layers are MAPb(I 0.80 Br 0.05 Cl 0.15 )3、MAPb(I 0.85 Br 0.05 Cl 0.10 )3、MAPb(I 0.90 Br 0.02 Cl 0.08 )3 self-luminous decorative sheet, the samples are marked as sample 1, sample 2, sample 3, and their luminous flux is measured. Then the samples are artificially aged, and the luminous flux of each sample surface material is measured after artificial aging. Artificial aging is carried out in accordance with the provisions of GB / T 16259. The test conditions are: the exposure equipment uses a 340 xenon lamp, the irradiance is 0.51W / m, the blackboard temperature is (65±3)℃, the illumination time is (102±0.5)min, the water spray time is (18±0.5)min, and the total test time is 1000h.

[0093] At the same time, set the comparison group as follows:

[0094] Comparative Example 1: The light-emitting layer is MAPb(I 0.90 Br 0.02 Cl 0.08 )3 However, when preparing the precursor, methylamine gas is not passed.

[0095] Comparative Example 2: The light-emitting layer is a CsPbBr3QDs layer.

[0096] The test results are shown in Table 1 below:

[0097] Table 1 Luminous flux of flexible decorative surface materials before and after artificial aging

[0098] Sample 1 Sample 2 Sample 3 Comparative Example 1 Comparative Example 2 Before artificial aging (lm / W) 85 81 75 80 72 After artificial aging (lm / W) 83 77 69 62 56

[0099] From the test results in Table 1, it can be seen that the light-emitting layer of the surface material adopts MAPb(I 0.90 Br 0.02 Cl 0.08 )3 and adding methylamine gas in the preparation of the precursor makes the luminescent layer resistant to artificial aging, and can still have good luminescent properties after a long time of surface decoration and can be used for lighting.

[0100] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0101] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A new type of photoelectric lighting method, characterized by: Self-luminous decorative sheets are laid on the load-bearing body.

2. The novel photoelectric lighting method according to claim 1 is characterized in that: The self-luminous decorative sheet is a flexible sheet, which includes a flexible decorative surface layer, a luminescent material layer and a flexible base layer from the outside to the inside. The flexible decorative surface layer and the flexible base layer are both low-temperature curing molding layers, and the luminescent material layer is a luminescent material layer with a perovskite film as the luminescent layer.

3. The novel photoelectric lighting method according to claim 2 is characterized in that The flexible substrate layer also includes an ITO thin film layer fixed on the low-temperature curing molding layer, and the light-emitting material layer includes: a first hole transport layer, a first electron transport layer, and a light-emitting layer sandwiched between the first hole transport layer and the first electron transport layer, the light-emitting layer is an I-Br-Cl ternary hybrid perovskite thin film layer, the first hole transport layer is provided with a P electrode, and the first electron transport layer is provided with an N electrode.

4. The novel photoelectric lighting method according to claim 3 is characterized in that: The I-Br-Cl ternary hybrid perovskite film layer is MAPb(I 0.80 Br 0.05 Cl 0.15 )3、MAPb(I 0.85 Br 0.05 Cl 0.10 )3、MAPb(I 0.90 Br 0.02 Cl 0.08 ) Any one of 3, the thickness of the I-Br-Cl ternary hybrid perovskite light-emitting layer is 200-500nm.

5. The novel photoelectric lighting method with lighting function according to claim 1 is characterized in that: The low-temperature curing forming layer comprises 100 parts of inorganic powder, 10-30 parts of acrylic polymer emulsion and / or redispersible latex powder by weight, the thickness of the flexible base layer is 10-20 mm, the thickness of the flexible decorative surface layer is 3-10 mm, and a pattern is printed on the surface of the flexible decorative surface layer.

6. The novel photoelectric lighting method according to claim 1 is characterized in that: The first hole transport layer is LaNiO3, and the first electron transport layer is any one of TiO2 and SnO2.

7. The novel photoelectric lighting method according to claim 1 is characterized in that: The self-luminous decorative sheet is prepared by the following preparation method: Prepare low-temperature curing molding slurry: take 100 parts of inorganic powder, add 10-30 parts of acrylic polymer emulsion and / or redispersible latex powder, and then add water to mix; Preparation of a flexible base layer: coating a low-temperature curing molding slurry on a molding carrier, and curing the slurry at a temperature of 80 to 300° C. to obtain a flexible base layer; Preparing an ITO thin film layer on the flexible substrate layer; Preparing a light-emitting material layer on the ITO thin film layer: sequentially forming a first hole transport layer, a light-emitting layer, and a first electron transport layer on the ITO thin film layer; Alternatively, a first electron transport layer, a light-emitting layer, and a first hole transport layer are sequentially formed on the ITO thin film layer, and a P electrode is provided on the hole transport layer and an N electrode is provided on the electron transport layer; Preparation of flexible decorative surface layer: Apply low-temperature curing molding slurry on the luminescent material layer, and perform curing molding at a temperature of 80 to 300°C.

8. The novel photoelectric lighting method according to claim 7 is characterized in that: The preparation of an ITO thin film layer on the flexible substrate layer comprises the following steps: in a magnetron sputtering device, an ITO target material is installed at target position A, and a Ti target material is installed at target position B; vacuum is then drawn, and argon gas is input, the gas pressure in the sputtering chamber of the magnetron sputtering device is adjusted, the sputtering power, time and temperature are set, and the ITO target material and the Ti target material are sputtered simultaneously to obtain a Ti-doped ITO thin film on the flexible substrate layer.

9. The novel photoelectric lighting method according to claim 7 is characterized in that: The method for preparing the light-emitting material layer on the ITO thin film layer adopts the following method 1 or method 2: Method 1: sequentially forming the first hole transport layer, the light emitting layer, and the first electron transport layer on the Ti-doped ITO thin film layer: Using magnetron sputtering equipment, LaNiO3 is used as a target material to generate a LaNiO3 film on a Ti-doped ITO film layer, and then heated and sputtered a P electrode; Prepare four solutes of PbI2, MAI, PbBr2 and MACl according to the required molar ratio, then dissolve them in DMF solvent, stir until completely dissolved, prepare I-Br-Cl ternary hybrid perovskite precursor, introduce methylamine gas, spin-coat on LaNiO3 film, and then anneal at 80-90°C for 10-15min to form I-Br-Cl ternary hybrid perovskite film layer; Spin-coat TiO2 or SnO2 slurry solution on the I-Br-Cl ternary hybrid perovskite film layer, degrade at 80-90°C for 5-105min, and then sputter N electrode; Method 2: sequentially forming the first electron transport layer, the light emitting layer, and the first hole transport layer on the Ti-doped ITO thin film layer: Spin-coat TiO2 or SnO2 slurry solution on the Ti-doped ITO thin film layer, degrade it at 80-90℃ for 5-10min after spin coating to form the first electron transport layer, and then sputter the N electrode; Prepare four solutes of PbI2, MAI, PbBr2 and MACl according to the required molar ratio, then dissolve them in DMF solvent, stir until completely dissolved, prepare I-Br-Cl ternary hybrid perovskite precursor, introduce methylamine gas, spin-coat on the first electron transport layer, and then anneal at 80-90°C for 10-15min to form an I-Br-Cl ternary hybrid perovskite film layer; Using magnetron sputtering equipment and LaNiO3 as the target material, LaNiO3 thin film is generated on the I-Br-Cl ternary hybrid perovskite thin film layer, and then heated and sputtered P electrode.

10. A component using the novel photoelectric lighting method according to any one of claims 1 to 9, characterized in that: The component includes a load-bearing body, the surface of which is paved with the self-luminous decorative sheet. The load-bearing body includes building interior walls, building exterior walls, floors, ceilings, desktops, cabinet surfaces, electronic parts housings, mechanical parts housings, automobile outer shells, automobile interior accessories, and outdoor billboards.

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