59results about "Organic semiconductor materials" patented technology

The invention provides a ZnO-perovskite structure based ultraviolet-visible tunable photoelectric detector and a preparation method thereof. The ZnO-perovskite structure based ultraviolet-visible tunable photoelectric detector is in the structure of FTO/ZnO nanorod/CH3NH3PbI3/Spiro-OMe TAD/Au, wherein the FTO layer is an anode, the ZnO nanorod is an electron transport layer, the CH3NH3PbI3 is a perovskite light absorption layer, the Spiro-OMe TAD is a hole transport layer, and the Au is a metal electrode. The ultraviolet-visible tunable photoelectric detector shows 9.56% of the photoelectric conversion efficiency under an unannealed condition. Meanwhile, the ultraviolet-visible tunable photoelectric detector shows the highest photoelectric response degree which reaches up to 7.8A/W in value under the bias voltage of 0. The detection degree of the ultraviolet-visible tunable photoelectric detector reaches the highest after vacuum annealing and reaches the responsivity of 10<14>, and the photoelectric detection performance of the ultraviolet-visible tunable photoelectric detector is ultraviolet light; and the photoelectric detection performance of the ultraviolet-visible tunable photoelectric detector is visible light after air annealing. In addition, the ultraviolet-visible tunable photoelectric detector has certain self-driving capability, and is not required to be driven by external bias voltage, thereby being conducive to energy conservation. The ultraviolet-visible tunable photoelectric detector is simple in operating step and low in experiment cost, and the manufactured detector has high responsivity and high detection sensitivity.

The invention provides a spirosilafluorene derivative and an organic light emitting device prepared therefrom, belongs to the technical field of organic photoelectric materials, and solves the technical problem that organic photoelectric materials are low in luminescence efficiency, poor in luminescence property, etc. in the prior art. According to the invention, a novel organic light-emitting material is obtained by taking a spirosilafluorenyl group as the core of the compound. The maximum luminescence efficiency of the organic light emitting device prepared from the spirosilafluorene derivative provided by the invention can be up to 10.4cd/A, the driving voltage is 3.5V, and the driving service life reaches 3.8 (on the basis of a comparison sample). Thus, the spirosilafluorene derivative is an excellent OLED material.

The invention provides an anthracene compound, a synthesis method thereof and an organic light emitting device, relating to the technical field of organic photoelectric materials. Different ligands are connected on a main structure of anthracene, and the molecular weight, pi conjugated degree and electrophilicity of a material are adjusted, so that the anthracene compound is enhanced in charge transfer capability and improved in glass state temperature, is difficult to crystallize, is good in film-forming property, and is more stable. The synthesis method is easy to operate. The anthracene compound can be used for preparing organic light emitting devices, and particularly, the anthracene compound can be used as an electron transfer layer material of the organic light emitting device, and the organic light emitting device has advantages of high light emitting efficiency and long service life.

The present invention relates to organic copolymers and organic semiconducting compositions comprising these materials, including layers and devices comprising such organic semiconductor compositions. The invention is also concerned with methods of preparing such organic semiconductor compositions and layers and uses thereof. The invention has application in the field of printed electronics and is particularly useful as a semiconducting material for use in formulations for organic thin film transistor (OFET) backplanes for displays, integrated circuits, organic light emitting diodes (OLEDs), photodetectors, organic photovoltaic (OPV) cells, sensors, memory elements and logic circuits.

A flexible substrate includes a first flexible thin film including a first region and a second region surrounding the first region; a second flexible thin film on the first thin film and in the first and second regions; and an intermediate blocking layer between the first and second thin films and in the first region.

The invention relates to the technical field of photovoltaic receptor materials, in particular to an indenoindene photovoltaic receptor material shown as a formula I, a method for preparing the indenoindene photovoltaic receptor material and application thereof. The indenoindene photovoltaic receptor material which is a compound, the method and the application possibly have the advantages that each indenoindene structural unit is provided with two SP<3> carbon bridges, the SP<3> carbon bridges can be connected with groups with high steric hindrance, and accordingly the indenoindene photovoltaic receptor material is favorable for phase separation of donors and receptors; indenoindene is provided with 14 pi electrons and large conjugate plane areas as compared with a fluorene structural unitof 12 pi electrons, and accordingly the indenoindene photovoltaic receptor material can be high in migration rate; the indenoindene photovoltaic receptor material which is an indenoindene small-molecule receptor material is excellent in photoelectric conversion efficiency.

The invention provides a derivative containing a triazine structure and a preparation method thereof as well as an organic electroluminescence device, and belongs to the technical field of organic photoelectric materials. The compound has a structure as shown in formula (I). The derivative containing the triazine structure provided by the invention is high in thermal stability and is high in glasstransition temperature; the preparation method is simple, raw materials are easily available, and products are prepared through conventional coupling reaction, so that industrial development needs can be met; and the device manufactured from the derivative containing the triazine structure has the advantages of low drive voltage and high light emitting efficiency, and is an organic light emittingmaterial with excellent performances.

The invention relates to a perovskite composite film, a light emitting diode and a preparation method of a perovskite composite film. The preparation method of a perovskite composite film prepares a flat and fully covered perovskite film by adding an electron transporting material and a phosphorescent sensitizer to an inorganic cerium halide perovskite CsPbBr3, prepares high-performance green light PeLEDs on the basis of taking the perovskite composite film as a light-emitting layer, improves the balance of carrier transport and increases the internal quantum efficiency so as to further increase the luminous efficiency and the service life of a perovskite light-emitting device.

The invention provides a preparation method capable of improving the performance of a perovskite light emitting diode. The preparation method of the perovskite light emitting diode has obvious advantages in improving the coverage of the perovskite film and improving the luminous efficiency and stability of the perovskite light emitting diode. As the solubility of the inorganic perovskite light-emitting layer is limited and the thin film is liable to crystallize to form an uneven and discontinuous perovskite light emitting layer to influence the performance of the device, alkolamine compounds are used as anode interface modification layers to effectively improve the morphology of the perovskite thin film so as to improve the coverage of the thin film, reduce internal defects of the thin film and the leakage current of the device and thus improve the performance and the stability of the light emitting device.

The invention discloses an organic field-effect multilevel transistor memory on the basis of light regulation and control. The organic field-effect multilevel transistor memory sequentially comprisesa substrate, a gate insulation layer, a quantum dot doped thin film layer, a photosensitive semiconductor layer and source and drain electrodes from bottom to top. The source and drain electrodes areformed on the photosensitive semiconductor layer; the quantum dot doped thin film layer is a polymer thin film with doped semiconductor nanometer crystals. The organic field-effect multilevel transistor memory has the advantages that the memory properties and the photosensitivity of devices can be improved by the aid of simple technological means, accordingly, the memory capacity and the photo-responsiveness of the devices can be greatly enhanced, the switch speeds of the devices can be greatly increased, and multilevel memory can be implemented, the preparation costs of the devices further can be reduced, and accordingly popularization and application can be facilitated.

The invention relates to an organic electroluminescent device. The organic electroluminescent device comprises a substrate, an organic luminescence unit, a packaging cover plate, and a first sealing ring, a second sealing ring, a third sealing ring and a fourth sealing ring which are arranged on the substrate. The packaging cover plate and the substrate are arranged at an interval, the organic luminescence unit is arranged on the substrate and is disposed between the substrate and the packaging cover, and the first sealing ring sleeves the organic luminescence unit; the second sealing ring sleeves the first sealing ring; the third sealing ring sleeves the second sealing ring; the fourth sealing ring sleeves the third sealing ring; the respective two opposite side surfaces of first sealing ring, the second sealing ring, the third sealing ring and the fourth sealing ring are respectively fixedly connected with the substrate and the packaging cover plate; and the first sealing ring is composed of a first light-cured adhesive and a first water absorbing agent, the second sealing ring is composed of a second light-cured adhesive, the third sealing ring is composed of a third light-cured adhesive and a second water absorbing agent, and the fourth sealing ring is composed of a fourth light-cured adhesive. The service life of the device is quite long.

The invention relates to a planar perovskite photovoltaic cell with a metal phthalocyanine compound as an electron transfer layer and belongs to the field of optoelectronic materials and devices. The cell is composed of a transparent conducting substrate, a hole transfer layer, a perovskite light absorption layer, the electron transfer layer, an electrode modifying layer and a metal electrode. The cell has the advantages that the metal phthalocyanine compound growing through a primary vacuum deposition method serves as the electron transfer layer to replace a traditional electron transfer layer based on a fullerene derivative. The prepared metal phthalocyanine compound has stable chemical properties, has good heat resistance, sun proofing, acid resistance and alkali resistance, and the perovskite light absorption layer can be well protected. The metal phthalocyanine compound is applied to the perovskite photovoltaic cell, the cost of the cell is reduced, and the service life of the cell is prolonged. The perovskite photovoltaic cell with the metal phthalocyanine compound as the electron transfer layer is high in photoelectric conversion efficiency, simple in structure, low in cost and stable in performance.

The invention discloses a compound for an OLED (Organic Light Emitting Diode) material. Due to series materials taking fluorenofluorene as a host compound, performances of OLED luminescent devices canbe improved. The invention further provides a preparation method of the compound. Based on technical development requirements of the current OLED display and illumination enterprises, the inventor provides synthesis of a novel aromatic compound and application thereof on the OLED device. The OLED device manufactured in the invention has extremely high photoelectric property, and the requirementsof panel manufacturing enterprises can be met.

The invention provides a composite quantum dot, and the composite quantum dot is a quantum dot modified by a halide anion modifier and comprises quantum dot particles and the halide anion modifier combined on the surfaces of the quantum dot particles, wherein the halide anion modifier is [AMXm+n+1]n-, wherein M is selected from one of Pb, Cd, Zn, In, Fe and Sb, X is selected from one of Cl, Br andI, A is CH3NH3, m is the valence number of M, n is the valence number of the halide anion modifier, m is 2 or 3, and when m is 2, n is 1; when m is 3, n is 1 or 2; and the [AMXm+n+1]n- is of a perovskite structure. The composite quantum dot with the above-mentioned characteristics can improve the fluorescence intensity of the quantum dot and reduce exciton energy transfer between the quantum dotand the quantum dot at the same time.

The present disclosure provides a flexible organic light-emitting diode (OLED) device and a method for manufacturing same. The flexible OLED device includes a pixel defining layer disposed on the planarization layer within a portion of a display area and on the planarization layer within a non-display area, a first inorganic layer disposed on the pixel defining layer, a first barrier layer disposed on the first inorganic layer within the non-display area, a first organic layer disposed on the first inorganic layer within the display area, and a second inorganic layer disposed on the first barrier layer and the first organic layer.

An electroluminescent display apparatus includes a substrate, a plurality of light emitting elements disposed on a flexible substrate, and an encapsulating unit disposed on the plurality of light emitting elements. The encapsulating unit includes a first encapsulating layer, a second encapsulating layer, and a third encapsulating layer, and at least one of the first encapsulating layer, the second encapsulating layer, and the third encapsulating layer is patterned to have a plurality of patterns which are isolated and independent from each other.

The invention provides a pyrimidoindole derivative and an organic light-emitting diode (OLED) device thereof, and relates to the technical field of organic photoelectric materials. According to the pyrimidoindole derivative provided by the invention, indole and pyrimidine are connected in parallel; on the basis, a phenanthrene structure is formed by connecting two benzene rings and a benzene ringof the indole in parallel, so that the structure has relatively strong stability; the structure is used as a parent nucleus structure, and physical performance of the structure is further improved through changing a radical connected with the structure, so that a series of pyrimidoindole derivatives are obtained. The compound is a main body material with good performance, a preparation method is simple, and raw materials are easy to obtain; when the pyrimidoindole derivative is applied to the OLED device, the light-emitting efficiency of the device can be improved, the driving voltage is reduced, and the service life of the device is prolonged.

The invention belongs to the technical field of organic photoelectric materials, in particular to a transition metal complex used as a phosphorescent material and a preparation method and applicationthereof. According to complex, the emission wavelength of the material can be adjusted within a larger wavelength range by the combination of Z1, Z2 and Z3, and meanwhile the emission wavelength is further finely adjusted by a main ligand through heteroatom, which has significant value in obtaining luminescent materials with various kinds of wavelengths. According to the complex, not only is the obtained complex has high luminescent efficiency, but also the emission wavelength can be adjusted in a wide range. The main ligand of the complex has the same skeleton structure, and by changing the position of a functional group, the position of the heteroatom on the main ligand and the type of the heteroatom, the wide range adjustment ranging from green light to red light of the emission wavelength is achieved. In addition, preparation methods of the luminescent materials of different colors are basically the same, and the operation is simple.

The invention provides an electron-transporting material, a synthetic method and an OLED (organic light-emitting diode) prepared from the electron-transporting material and relates to the technical field of organic photoelectric materials. Different ligands are connected onto a main body structure, pi conjugation degree and eletrophilicity of the material are adjusted, so that charge migration directive property of the material is improved, electronic mobility is improved, and electron-transporting capacity of the material is improved. The synthetic method is simple and easy to operate. When applied to preparation of the OLED, the material particularly can be taken as an electron-transporting layer of the OLED for balancing carrier injection and transmission, and the OLED prepared from the electron-transporting material has the advantages of high luminous efficiency and long service life.

The invention relates to ink for preparing a luminous layer of a flexible luminous electrochemical battery device and a preparation method and application of the ink. The ink for preparing a luminous layer of a flexible luminous electrochemical battery device is prepared from a transition metal complex, 1-butyl-3-methyl imidazole hexafluorophosphate, a polymer additive and an organic solvent, wherein the concentration of the transition metal complex in the ink is 20-80mg/mL; the concentration of the 1-butyl-3-methyl imidazole hexafluorophosphate is 2-8mg/mL; the concentration of the polymer additive is 4-16mg/mL. By use of the ink for preparing the luminous layer of the flexible luminous electrochemical battery device provided by the invention, printing of the luminous layer can be realized.

Photovoltaic devices having photoactive layers coupled to buffer layers are disclosed. Such devices may be transparent to visible light but absorb near-infrared light and/or ultraviolet light. The photovoltaic devices may include a p-phenylene layer that acts as a buffer layer. The photovoltaic devices may include one or more photoactive layers. The one or more photoactive layers may include a single planar heterojunction, a single bulk heterojunction (BHJ), or multiple stacked BHJs that have complementary absorption characteristics, among other possibilities.

The invention discloses an organic electroluminescent device comprising an anode conductive substrate, a hole injection layer, a hole transporting layer, a light-emitting layer, an electron transporting layer, an electron injection layer, a cathode layer, an organic blocking layer, an inorganic blocking layer, a moisture absorption layer and a cooling layer which are stacked successively. According to the organic electroluminescent device, the material of the inorganic blocking layer adopts a mixture of telluride and sulfide, so advantages, such as high density, good water and oxygen prevention capability, etc., can be realized, and the material of the moisture absorption layer is selected from at least one calcium oxide, barium oxide, strontium oxide and magnesium oxide, so the water vapour in the air can be absorbed. Through the cooperation of the inorganic blocking layer and the moisture absorption layer, less water vapour and oxygen enter the organic electroluminescent device, and compared with a conventional organic electroluminescent device, the organic electroluminescent device has the advantage of long service life. The invention further discloses a preparing method of the organic electroluminescent device.