Organic solar cell with exciton blocking and sunlight sensitivity enhancing integrated type hole transport layer and preparation method of organic solar cell

A hole transport layer and solar cell technology, applied in the field of green solar energy, can solve the problems of mismatch of injection and transmission rates, many unclear mechanisms, low short-circuit current, etc., so as to reduce the dark current component and electron leakage current, The effect of balancing transport properties and preventing exciton quenching

Inactive Publication Date: 2016-06-08
SHANGHAI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] 2. The donor/acceptor exciton separation in traditional planar heterojunction cells is insufficient, resulting in low short-circuit current;
[0006] 3. The morphology and structure of the bulk heterojunction are complex, it is difficult to accurately control, and there are many unknown mechanisms;
[0007] 4. The injection and transport rates of holes and electrons do not match, resulting in the limitation of

Method used

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  • Organic solar cell with exciton blocking and sunlight sensitivity enhancing integrated type hole transport layer and preparation method of organic solar cell
  • Organic solar cell with exciton blocking and sunlight sensitivity enhancing integrated type hole transport layer and preparation method of organic solar cell
  • Organic solar cell with exciton blocking and sunlight sensitivity enhancing integrated type hole transport layer and preparation method of organic solar cell

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Experimental program
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Example Embodiment

[0042] Example one:

[0043] In this embodiment, see figure 1 , An organic solar cell with an integrated hole transport layer for exciton blocking and solar sensitization. From bottom to top, it consists of substrate layer 1, transparent conductive anode layer 2, hole injection layer 3, exciton blocking layer 4. The donor layer 5, the acceptor layer 6, the electron transport layer 7 and the electrode cathode layer 8 are combined with a total of 8 functional layers. The donor layer 5 is made of narrow-band organic solar cell materials with strong absorption. The acceptor layer 6 is made of fullerene, the material of the exciton blocking layer 4 is a wide band gap hole transport material with ultraviolet absorption and almost no visible light absorption, and the energy level of the exciton blocking layer 4 is the same as the energy level of the donor layer 5. match.

[0044] In this embodiment, an ITO substrate composed of a substrate layer 1 and a transparent conductive anode laye...

Example Embodiment

[0047] Embodiment two:

[0048] This embodiment is basically the same as the first embodiment, and the special features are:

[0049] In this embodiment, see figure 1 , Choose a transparent ITO glass substrate etched into a certain template as the anode, and the thickness of the ITO glass substrate is 150nm. Use lotion, acetone, deionized water, and isopropanol to clean ultrasonically for 20 minutes, dry with nitrogen, and UV / O 3 Process for 15 minutes for backup. The hole injection layer MoO is deposited on the ITO glass substrate by vacuum evaporation 3 , The thickness is 10nm, then the exciton blocking layer BSB-Cz is deposited, the thickness is controlled at 8-20nm, and then the donor SubPc is deposited with the thickness of 7-20nm and the acceptor layer C 60 , The thickness is 30-50nm, the electron transport layer material Bphen is deposited again, the thickness is 5-10nm, and then the mask plate is replaced to vapor-deposit the cathode metal, and the vapor-deposited metal A...

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Abstract

The invention discloses an organic solar cell with an exciton blocking and sunlight sensitivity enhancing integrated type hole transport layer and a preparation method of the organic solar cell. The organic solar cell comprises a substrate, a transparent electrode, a hole injection layer, an exciton blocking layer, a donor layer, a receptor layer, an electronic transmitting layer and a negative electrode. The organic solar cell is characterized in that the exciton blocking layer can effectively block electrons at a positive electrode end through material matching, and dark current components and electron leakage currents of a photovoltaic cell are reduced; ultraviolet light in sunlight can be absorbed for emitting pure blue light or sky blue light, and the number of incidence photons of an active layer of the subsequent organic solar cell is increased. Photo-generated currents are increased for improving the power conversion efficiency of a photovoltaic cell. The organic solar cell achieves dual functions of exciton blocking and sunlight enhancing at the same time through a simple method without other additional optical design or complex processes. The organic solar cell is simple in preparation process, low in device requirement and suitable for mass production.

Description

technical field [0001] The invention relates to an organic optoelectronic device and a preparation method thereof, in particular to an organic solar cell (OPV) and a preparation method thereof, which are applied in the technical field of green solar energy. Background technique [0002] Organic optoelectronic technology is one of the high-tech technologies that have developed rapidly in the world's academic circles in the past 10 years. With the rapid development of film-forming technology and the diversity of design of organic materials or organic / inorganic hybrid materials, organic optoelectronic products such as organic electroluminescent devices, organic photovoltaic cells (OPV), organic field effect transistors, etc. are gradually mature. And it has the advantages of easy large-area preparation, flexibility, shock resistance and the like. Among them, organic solar cells using clean energy have attracted much attention in the field of energy technology due to their adva...

Claims

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Application Information

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IPC IPC(8): H01L51/44H01L51/42H01L51/48
CPCH10K71/10H10K30/80H10K30/00Y02E10/549
Inventor 郑燕琼张静杨芳魏斌濮文虹
Owner SHANGHAI UNIV
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