Full-micromolecule organic photovoltaic cell and intelligent door lock

Abstract

The invention discloses a full-small-molecule organic photovoltaic cell and an intelligent door lock, the full-small-molecule organic photovoltaic cell comprises an anode, an anode modification layer, an active layer, a cathode modification layer and a cathode, the active layer is B1: BTA3 or BTR: ITCC, and chlorobenzene is used for performing steam annealing treatment on the active layer. The intelligent door lock comprises a display screen; the microprocessor is connected with the display screen; the mechanical door lock is connected with the microprocessor; and the power supply system is connected with the microprocessor, and the power supply system comprises the full small molecule organic photovoltaic cell. According to the full-small-molecule organic photovoltaic cell, solvent steam annealing treatment is carried out on the active layer thin film by using the high-boiling-point solvent chlorobenzene, so that relatively high filling factors, short-circuit current density and photoelectric conversion efficiency of the full-small-molecule organic photovoltaic cell are realized. According to the intelligent door lock integrated with the full-small-molecule organic photovoltaic cell, self power supply and electric energy storage of the intelligent door lock under indoor light are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of organic photovoltaic cells, and in particular, to a fully small molecule organic photovoltaic cell and an intelligent door lock. Background Art

[0002] Organic photovoltaic cells have received extensive attention due to their advantages such as flexibility, light weight, semi-transparency, and solution processability. In the active layer of a fully small molecule organic photovoltaic cell, both the electron donor and the electron acceptor are small molecules with an A-D-A structure, and it is difficult to achieve good phase separation, resulting in poor charge transport ability in the fully small molecule organic photovoltaic cell system, serious bimolecular recombination, and showing low photoelectric conversion efficiency, short-circuit current density, and fill factor.

[0003] Research has found that monocrystalline silicon cells, as a commercialized photovoltaic cell, have advantages in outdoor power generation and are widely used. However, their photovoltaic efficiency under indoor lighting conditions is low and it is difficult to meet the use of intelligent door lock devices under indoor light conditions. Therefore, in the presence of scattered light and indoor light sources, how to provide renewable electrical energy for the intelligent door lock system has become an urgent problem to be solved. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art.

[0005] To this end, in the first aspect of the present invention, a fully small molecule organic photovoltaic cell is provided, including: an anode, an anode modification layer, an active layer, a cathode modification layer, and a cathode. The active layer is B1:BTA3 or BTR:ITCC, and the active layer is subjected to vapor annealing treatment with chlorobenzene.

[0006] Further, the anode is ITO, the anode modification layer is PEDOT:PSS, the active layer is B1:BTA3, the cathode modification layer is PFN-Br, the cathode is Al, and the mass ratio of B1 to BTA3 in the active layer is 0.8 - 1.2:1.

[0007] Further, the anode is ITO, the anode modification layer is PEDOT:PSS, the active layer is BTR:ITCC, the cathode modification layer is PFN-Br, the cathode is Al, and the mass ratio of BTR to ITCC in the active layer is 0.8 - 1.2:1.

[0008] Further, the vapor annealing method is to place the active layer in a chlorobenzene atmosphere at 20 - 30 °C for 30 - 90 seconds for annealing treatment.

[0009] Further, the fully small molecule organic photovoltaic cell has a photoelectric conversion efficiency > 26% under a 2700K color temperature LED lamp with an irradiation intensity of 500 lux.

[0010] The second aspect of the present invention provides an intelligent door lock, comprising:

[0011] A display screen;

[0012] A microprocessor, which is connected to the display screen;

[0013] A mechanical door lock, which is connected to the microprocessor;

[0014] A power supply system, which is connected to the microprocessor and includes the above-mentioned all-small molecule organic photovoltaic cell.

[0015] Furthermore, the all-small molecule organic photovoltaic cell is integrated on the surface of the intelligent door lock to absorb ambient light to the greatest extent.

[0016] Furthermore, the power supply system further includes: a storage battery and a rectifier diode. The all-small molecule organic photovoltaic cell is electrically connected to the rectifier diode, and the rectifier diode is electrically connected to the storage battery.

[0017] Furthermore, the all-small molecule organic photovoltaic cell is in a single-section or series connection mode to charge the storage battery in the form of direct current.

[0018] Furthermore, the storage battery is a single-section or series-connected nickel-metal hydride battery with a maximum output voltage of 1.2 - 6V.

[0019] Compared with the prior art, the present invention has at least the following beneficial effects:

[0020] An all-small molecule organic photovoltaic cell provided by the present invention, through solvent vapor annealing treatment of the active layer film with a high-boiling solvent chlorobenzene, enables good phase separation morphology of the donor and acceptor in the active layer, improves the bimolecular recombination of the active layer, and enhances the charge transport ability of the active layer, thereby achieving a relatively high fill factor, short-circuit current density, and photoelectric conversion efficiency for the all-small molecule organic photovoltaic cell. The intelligent door lock integrated with the all-small molecule organic photovoltaic cell provides renewable electric energy for the intelligent door lock system, realizing self-power supply and electric energy storage of the intelligent door lock under indoor light. Description of the Drawings

[0021] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered as a limitation to the present application. Moreover, throughout the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0022] Figure 1 It is a schematic structural diagram of the intelligent door lock provided by the embodiment of the present application.

[0023] Figure 2 Normalized emission spectra of the LED lights provided in Example 1, Example 2 and Comparative Example 1 of the present application at a color temperature of 2700K.

[0024] Figure 3 Structural formula of the active layer material of the organic photovoltaic cell provided in the embodiment of the present application.

[0025] Figure 4 Phase diagram of the directly processed B1:BTA3 thin film of the active layer provided in Example 1 of the present application.

[0026] Figure 5 Phase diagram of the B1:BTA3 thin film of the active layer provided in Example 1 of the present application after annealing with chlorobenzene solvent vapor.

[0027] Figure 6 Current-voltage curve of the organic photovoltaic cell with the active layer of B1:BTA3 after annealing with chlorobenzene solvent vapor provided in Example 1 of the present application under the solar spectrum.

[0028] Figure 7 Current-voltage curve of the organic photovoltaic cell with the active layer of B1:BTA3 after annealing with chlorobenzene solvent vapor provided in Example 1 of the present application under the 2700K color temperature LED light.

[0029] Figure 8 Phase diagram of the active layer thin film of B1:BTA3 after annealing with chloroform solvent vapor provided in Comparative Example 1 of the present application.

[0030] Figure 9 Current-voltage curve of the organic photovoltaic cell with the active layer of B1:BTA3 after annealing with chloroform solvent vapor provided in Comparative Example 1 of the present application under the solar spectrum.

[0031] Figure 10 Current-voltage curve of the organic photovoltaic cell with the active layer of B1:BTA3 after annealing with chloroform solvent vapor provided in Comparative Example 1 of the present application under the 2700K color temperature LED light.

[0032] Figure 11 Current-voltage curve of the organic photovoltaic cell with the active layer of BTR:ITCC after annealing with chlorobenzene solvent vapor provided in Example 2 of the present application under the solar spectrum.

[0033] Figure 12 Current-voltage curve of the organic photovoltaic cell with the active layer of BTR:ITCC after annealing with chlorobenzene solvent vapor provided in Example 2 of the present application under the 2700K color temperature LED light. Detailed implementation manners

[0034] To better understand the above technical solutions, the technical solutions of the embodiments of the present application will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific features in the embodiments of the present application are detailed descriptions of the technical solutions of the embodiments of the present application, rather than limitations on the technical solutions of the present application. Without conflict, the technical features in the embodiments of the present application and the embodiments can be combined with each other.

[0035] The following specific embodiments illustrate the implementation manners of the present application. Those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in this specification.

[0036] In the description of the present invention, unless otherwise clearly defined and limited, the terms "first", "second", "third", etc. are only used to distinguish elements with similar attributes, rather than indicating or implying relative importance or a specific order; the term "plurality" means two or more, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In addition, the term "comprising", "including" or any other variant thereof is intended to cover a non-exclusive inclusion, including not only those listed elements, but also other elements not expressly listed.

[0038] In the first aspect of the embodiments of the present invention, a fully small molecule organic photovoltaic cell is provided, including: an anode, an anode modification layer, an active layer, a cathode modification layer, and a cathode. It is characterized in that the active layer is B1:BTA3 or BTR:ITCC, and the active layer is subjected to vapor annealing treatment using chlorobenzene.

[0039] A fully small molecule organic photovoltaic cell provided by the embodiments of the present invention realizes a good phase separation morphology between the donor and the acceptor in the active layer by subjecting the active layer film to solvent vapor annealing treatment using a high-boiling-point solvent chlorobenzene, improves the bimolecular recombination in the active layer, and enhances the charge transport ability of the active layer, thereby achieving a relatively high fill factor, short-circuit current density, and photoelectric conversion efficiency in the fully small molecule organic photovoltaic cell.

[0040] In some embodiments, the anode material is ITO, the anode modification layer is PEDOT:PSS, the active layer is B1:BTA3, the cathode modification layer is PFN-Br, the cathode is Al, and the mass ratio of B1 to BTA3 in the active layer is 0.8 to 1.2:1. Alternatively, the anode material is ITO, the anode modification layer is PEDOT:PSS, the active layer is BTR:ITCC, the cathode modification layer is PFN-Br, the cathode is Al, and the mass ratio of BTR to ITCC in the active layer is 0.8 to 1.2:1.

[0041] In this embodiment, the anode materials and cathode materials of the all-small molecule organic photovoltaic cell include: ITO (indium tin oxide), FTO (fluorine-doped tin oxide), AZO (aluminum zinc oxide target), silver, aluminum, etc. The materials of the anode modification layer include: PEDOT (polymer of 3,4-ethylenedioxythiophene monomer):PSS (polystyrene sulfonic acid), nickel oxide, molybdenum trioxide, etc. The materials of the cathode modification layer include: PFN-Br (CAS No. 889672-99-5), PDINN (CAS No. 1020180-01-1), etc. The active layer is made of a donor material and an acceptor material; the donor material includes bithiophene or its derivatives, indacenodithiophene or its derivatives, etc.; the acceptor material includes fullerene or its derivatives, perylene or its derivatives, naphthalene or its derivatives, and indacenodithiophene or its derivatives, etc. In the embodiments of the present invention, the preferred anode material is ITO, the anode modification layer is PEDOT:PSS, and the mass ratio of PEDOT to PSS is 0.8 to 1.2:1. More preferably, the mass ratio of PEDOT to PSS in the anode modification layer is 1:1, the active layer is B1:BTA3, and the mass ratio of B1 to BTA3 in the active layer is 0.8 to 1.2:1. More preferably, the mass ratio of B1 to BTA3 in the active layer is 1:1, the cathode modification layer is PFN-Br, and the cathode is Al. Alternatively, the preferred anode material is ITO, the anode modification layer is PEDOT:PSS, the mass ratio of PEDOT to PSS is 0.8 to 1.2:1. More preferably, the mass ratio of PEDOT to PSS in the anode modification layer is 1:1, the active layer is BTR:ITCC, and the mass ratio of BTR to ITCC in the active layer is 0.8 to 1.2:1. More preferably, the mass ratio of BTR to ITCC in the active layer is 1:1, the cathode modification layer is PFN-Br, and the cathode is Al.

[0042] In some embodiments, the vapor annealing method is to place the active layer in a chlorobenzene atmosphere at 20 to 30 °C and perform annealing treatment for 30 to 90 seconds.

[0043] Specifically, the vapor annealing method is to place the active layer in a chlorobenzene atmosphere at 20 to 30 °C for 30 to 90 seconds under closed or semi-closed conditions, so that good phase separation morphology of the donor and acceptor in the active layer is achieved.

[0044] In some embodiments, the all-small molecule organic photovoltaic cell has a photoelectric conversion efficiency > 26% under a 2700K color temperature LED lamp with an irradiation intensity of 500 lux.

[0045] In a second aspect of the embodiments of the present invention, there is provided an intelligent door lock, comprising:

[0046] A display screen 1;

[0047] A microprocessor 2, the microprocessor 2 being connected to the display screen 1;

[0048] A mechanical door lock 3, the mechanical door lock 3 being connected to the microprocessor 2;

[0049] A power supply system 4, the power supply system 4 being connected to the microprocessor 2, and the power supply system 4 including the above-mentioned all-small molecule organic photovoltaic cell 401.

[0050] The intelligent door lock integrating the all-small molecule organic photovoltaic cell provided by the embodiments of the present invention provides renewable electric energy for the intelligent door lock system, realizing self-power supply and electric energy storage of the intelligent door lock under indoor light.

[0051] In some embodiments, the all-small molecule organic photovoltaic cell 401 is integrated on the surface of the intelligent door lock to absorb ambient light to the greatest extent.

[0052] Specifically, the all-small molecule organic photovoltaic cell 401 is integrated on the surface of the intelligent door lock to absorb ambient light to the greatest extent and convert it into electric energy. The ambient light includes scattered sunlight in the room and corridor and indoor lighting, and there is no limit on the irradiation intensity.

[0053] In some embodiments, the power supply system 4 further includes: a storage battery 402 and a rectifier diode 403. The all-small molecule organic photovoltaic cell 401 is electrically connected to the rectifier diode 403, and the rectifier diode 403 is electrically connected to the storage battery 402.

[0054] Specifically, the all-small molecule organic photovoltaic cell 401 is electrically connected to the storage battery 402 through the rectifier diode 403. The rectifier diode 403 can ensure that the current and voltage output by the all-small molecule organic photovoltaic cell 401 can efficiently charge the storage battery, and at the same time, the one-way conduction of the rectifier diode 403 can prevent the loss of electric energy of the storage battery 402.

[0055] In some embodiments, the all-small-molecule organic photovoltaic cell 401 is in a single-junction or series configuration to charge the storage battery 402 in the form of direct current. Preferably, two all-small-molecule organic photovoltaic cells 401 are connected in series, and the voltage corresponding to the maximum output power point can reach 2.5 V under indoor light conditions. The storage battery 402 is a single or series-connected nickel-metal hydride battery, and the maximum output voltage is 1.2 - 6 V. Preferably, the storage battery 402 is two nickel-metal hydride batteries connected in series, and the supply voltage is 2.5 V.

[0056] It can be understood that the all-small-molecule organic photovoltaic cell 401 can charge the storage battery 402 under indoor light conditions, and the storage battery 402 can drive the smart door lock to function properly both in the dark and under ambient light conditions.

[0057] In summary, the all-small-molecule organic photovoltaic cell provided in the embodiments of the present invention exhibits excellent photoelectric conversion efficiency under the radiation intensity of indoor light (usually 50 - 1000 lux). Compared with commercially available solar cells (such as silicon crystal cells) on the market, it can achieve a photoelectric conversion efficiency of more than 26% under indoor light conditions, and at the same time, it has low toxicity, is easy to manufacture, and can be widely used for power supply in indoor scenarios. Using the all-small-molecule organic photovoltaic cell of the embodiments of the present invention in a smart door lock has the following advantages:

[0058] (1) The smart door lock is charged by the all-small-molecule organic photovoltaic cell under diffused sunlight and indoor and outdoor light conditions, and the storage battery powers the smart door lock, with high induction sensitivity and strong stability.

[0059] (2) Using the all-small-molecule organic photovoltaic cell as the power supply device eliminates the need to replace dry batteries or charge secondary batteries (such as lithium batteries), enabling the smart door lock device to have a self-power supply function, reducing the usage cost and battery pollution to the environment. At the same time, the smart door lock in the embodiments of the present invention omits the structure for battery accommodation, replacement, and charging, making the smart door lock lighter, improving the reliability of the smart door lock, and reducing the possibility of faults. In addition, there is no need to design an additional mechanical structure for battery replacement, thereby reducing the risk of violent disassembly and potential safety hazards.

[0060] (3) The all-small-molecule organic photovoltaic cell of the smart door lock uses indoor light and diffused sunlight as the light source. At a relatively low irradiation intensity, the current generated by the photovoltaic cell and passing through the rectifier diode and the storage battery is small enough that the thermal effect can be ignored, greatly extending the lifespan of the entire power supply system.

[0061] Embodiment 1 An all-small-molecule organic photovoltaic cell and a smart door lock

[0062] (1) All-small-molecule organic photovoltaic cell

[0063] Anode: ITO; Anode modification layer: PEDOT:PSS, mass ratio 1:1; Active layer: B1:BTA3, mass ratio 1:1; Cathode modification layer: PFN-Br; Cathode: Al.

[0064] Among them, the structural formulas of B1 and BTA3 are as Figure 3 shown. The active layer thin film is treated by solvent vapor annealing using the high-boiling-point solvent chlorobenzene. The specific method is to add chlorobenzene in a petri dish, then put the photoactive layer B1:BTA3 into the petri dish, cover the lid of the petri dish, and carry out solvent vapor annealing treatment at room temperature of 25°C for 1 min. As Figure 4 and Figure 5 shown, after the chlorobenzene vapor annealing treatment, good phase separation morphology of the donor and acceptor in the active layer is achieved, thus achieving a relatively high fill factor, short-circuit current density and energy conversion efficiency of the all-small molecule organic photovoltaic cell.

[0065] (2) An intelligent door lock, as Figure 1 shown, includes a display screen 1, a microprocessor 2, a mechanical door lock 3 and a power supply system 4. Among them, the power supply system 4 includes an all-small molecule organic photovoltaic cell 401, a storage battery 402 and a rectifier diode 403. The display screen 1 includes fingerprint sensing. The display screen 1 is connected to the microprocessor 2. The microprocessor 2 drives the display screen to display and process the collected sensing data, and the microprocessor 2 controls the opening and closing of the mechanical door lock 3. The power supply system 4 supplies power to the entire intelligent door lock system. Among them, the all-small molecule organic photovoltaic cell 401 is in a series connection of two pieces and charges the storage battery 402 in the form of direct current; the storage battery 402 can be a nickel-metal hydride battery, and its structure includes a surface protection layer, a negative electrode, a separator, an electrolyte and a positive electrode. The storage battery 402 is two series-connected nickel-metal hydride batteries, and its maximum output voltage is 2.5V, which can drive the intelligent door lock device to work.

[0066] Example 2 An all-small molecule organic photovoltaic cell and an intelligent door lock

[0067] (1) All-small molecule organic photovoltaic cell

[0068] Anode: ITO; Anode modification layer: PEDOT:PSS, mass ratio 1:1; Active layer: BTR:ITCC, mass ratio 1:1; Cathode modification layer: PFN-Br; Cathode: Al.

[0069] Among them, the structural formulas of BTR and ITCC are as Figure 3 shown. The active layer thin film is treated by solvent vapor annealing using the high-boiling-point solvent chlorobenzene. The specific method is to add chlorobenzene in a petri dish, then put the photoactive layer BTR:ITCC into the petri dish, cover the lid of the petri dish, and carry out solvent vapor annealing treatment at room temperature of 25°C for 1 min. As Figure 8As shown, after annealing treatment with chlorobenzene vapor, good phase separation morphology of the donor and acceptor in the active layer BTR:ITCC is achieved, thereby realizing a relatively high fill factor, short-circuit current density, and energy conversion efficiency of the all-small-molecule organic photovoltaic cell.

[0070] (2) An intelligent door lock, as Figure 1 shown, includes a display screen 1, a microprocessor 2, a mechanical door lock 3, and a power supply system 4. Among them, the power supply system 4 includes an all-small-molecule organic photovoltaic cell 401, a storage battery 402, and a rectifying diode 403.

[0071] Comparative Example 1 An all-small-molecule organic photovoltaic cell

[0072] An all-small-molecule organic photovoltaic cell has the following structure: anode: ITO, anode modification layer: PEDOT:PSS, active layer: B1:BTA3 (mass ratio 1:1), cathode modification layer: PFN-Br, cathode: Al. The difference between Comparative Example 1 and Example 1 is that the solvent vapor annealing treatment of the active layer uses chloroform with a low boiling point for solvent vapor annealing treatment. At room temperature of 25 °C, the chloroform vapor annealing treatment is carried out for 1 minute. The remaining preparation processes are the same as those in Example 1.

[0073] The performance test situations of the all-small-molecule organic photovoltaic cells in Example 1, Example 2, and Comparative Example 1 are as follows:

[0074] See Figure 2 , the normalized emission spectrum of the LED lamp at a color temperature of 2700K, that is, the spectral range of the light of the indoor light source, and the absorption spectrum of the all-small-molecule organic photovoltaic cell covers this range.

[0075] (1) The current density-voltage curve of the organic photovoltaic cell with the active layer of B1:BTA3 annealed with chlorobenzene solvent vapor in Example 1 is shown in Figure 6 . The test is carried out using a solar simulator in a glove box filled with N2. It can be seen that the photoelectric conversion efficiency is 9.59%, the corresponding voltage is 1.20V, and the current is 11.99 mA / cm 2 , and the fill factor is 0.667.

[0076] (2) The current density-voltage curve of the organic photovoltaic cell with the active layer of B1:BTA3 annealed with chlorobenzene solvent vapor in Example 1 is shown in Figure 7 . The test is carried out using a 2700K color temperature LED lamp at 500 lux in a glove box filled with N2. It can be seen that the photoelectric conversion efficiency is 27.0%, the corresponding voltage is 1.09V, and the current is 48.4 μA / cm 2 , and the fill factor is 0.763.

[0077] (3) The current density-voltage curve of the organic photovoltaic cell with the active layer of B1:BTA3 in Comparative Example 1, which was treated by chloroform solvent vapor annealing, is shown in Figure 9 . The test was carried out using a solar simulator in a glove box filled with N2. It can be seen that the photoelectric conversion efficiency is 4.18%, the corresponding voltage is 1.22 V, and the current is 7.21 mA / cm 2 , and the fill factor is 0.476.

[0078] (4) The current density-voltage curve of the organic photovoltaic cell with the active layer of B1:BTA3 in Comparative Example 1, which was treated by chloroform solvent vapor annealing, is shown in Figure 10 . The test was carried out using a 2700K color temperature LED lamp at 500 lux in a glove box filled with N2. It can be seen that the photoelectric conversion efficiency is 19.1%, the corresponding voltage is 1.08 V, and the current is 45.39 μA / cm 2 , and the fill factor is 0.582.

[0079] (5) The current density-voltage curve of the organic photovoltaic cell with the active layer of BTR:ITCC in Example 2, which was treated by chlorobenzene solvent vapor annealing, is shown in Figure 11 . The test was carried out using a solar simulator in a glove box filled with N2. It can be seen that the photoelectric conversion efficiency is 9.51%, the corresponding voltage is 1.17 V, and the current is 12.15 mA / cm 2 , and the fill factor is 0.669.

[0080] (6) The current density-voltage curve of the organic photovoltaic cell with the active layer of BTR:ITCC in Example 2, which was treated by chlorobenzene solvent vapor annealing, is shown in Figure 12 . The test was carried out using a 2700K color temperature LED lamp at 500 lux in a glove box filled with N2. It can be seen that the photoelectric conversion efficiency is 26.3%, the corresponding voltage is 1.05 V, and the current is 48.59 μA / cm 2 , and the fill factor is 0.768.

[0081] The above comparison results confirm that the all-small-molecule organic photovoltaic cells provided in Examples 1 and 2 of the present application have a higher photoelectric conversion efficiency in an indoor light environment than in sunlight, and the all-small-molecule organic photovoltaic cells treated by chlorobenzene solvent vapor annealing have a higher photoelectric conversion efficiency than those treated by chloroform solvent vapor annealing.

[0082] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, various modifications and variations can be made to the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A fully small-molecule organic photovoltaic cell, comprising: An anode, an anode modification layer, an active layer, a cathode modification layer and a cathode, characterized in that the active layer is B1:BTA3 or BTR:ITCC, and the active layer is subjected to vapor annealing treatment with chlorobenzene.

2. The all-small molecule organic photovoltaic cell according to claim 1, wherein The anode is ITO, the anode modification layer is PEDOT:PSS, the active layer is B1:BTA3, the cathode modification layer is PFN-Br, the cathode is Al, and the mass ratio of B1 to BTA3 in the active layer is 0.8 to 1.2:

1.

3. The all-small molecule organic photovoltaic cell according to claim 1, wherein The anode is ITO, the anode modification layer is PEDOT:PSS, the active layer is BTR:ITCC, the cathode modification layer is PFN-Br, the cathode is Al, and the mass ratio of BTR to ITCC in the active layer is 0.8 to 1.2:

1.

4. The all-small molecule organic photovoltaic cell according to claim 1, characterized in that, The vapor annealing method is to place the active layer in a chlorobenzene atmosphere at 20 to 30 °C and perform annealing treatment for 30 to 90 seconds.

5. The all-small molecule organic photovoltaic cell according to claim 1, characterized in that, The all-small molecule organic photovoltaic cell has a photoelectric conversion efficiency > 26% under a 2700K color temperature LED lamp with an irradiation intensity of 500 lux.

6. An intelligent door lock, characterized in that, Including: A display screen (1); A microprocessor (2), and the microprocessor (2) is connected to the display screen (1); A mechanical door lock (3), and the mechanical door lock (3) is connected to the microprocessor (2); A power supply system (4), and the power supply system (4) is connected to the microprocessor (2), and the power supply system (4) includes the all-small molecule organic photovoltaic cell (401) according to any one of claims 1 to 5.

7. The intelligent door lock according to claim 6, characterized in that, The all-small molecule organic photovoltaic cell (401) is integrated on the surface of the smart door lock to absorb ambient light to the greatest extent.

8. The intelligent door lock according to claim 6, characterized in that, The power supply system (4) further includes: a storage battery (402) and a rectifier diode (403), the all-small molecule organic photovoltaic cell (401) is electrically connected to the rectifier diode (403), and the rectifier diode (403) is electrically connected to the storage battery (402).

9. The intelligent door lock according to claim 8, characterized in that, The all-small molecule organic photovoltaic cell (401) is adopted in a single-section or series connection mode to charge the storage battery (402) in the form of direct current.

10. The intelligent door lock according to claim 9, characterized in that, The storage battery (402) is a single-section or series-connected nickel-metal hydride battery with a maximum output voltage of 1.2 to 6V.

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