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High-mobility organic micromolecule-doped ternary solar cell

A solar cell and high mobility technology, applied in the field of organic thin film solar cells, can solve the problems of low hole transport and collection efficiency, and achieve the effects of improving short-circuit current density and filling factor, improving collection capacity and low cost

Inactive Publication Date: 2016-03-16
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the invention of the present invention is: aiming at the prior art, the technical problem to be solved in the present invention is how to provide a ternary solar cell doped with high mobility organic small molecules, the purpose is to add high mobility Organic small molecules, the purpose is to overcome the shortcomings of low hole transport and collection efficiency in the photoactive layer of traditional organic solar cells, improve the short-circuit current density and fill factor of the battery, and prepare high-performance ternary organic solar cells

Method used

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Embodiment 1

[0025] Control group:

[0026] Clean the substrate composed of transparent substrate layer and transparent conductive cathode ITO with surface roughness less than 1nm, and dry it with nitrogen after cleaning; spin coating ZnO (5000rpm, 40s, 15nm) on the surface of transparent conductive cathode ITO to prepare cathode buffer Layer, and the formed film is thermally annealed (200℃, 60min); P3HT:PC is prepared by spin coating on the cathode buffer layer 61 BM (40%:60%) photoactive layer (1000rpm, 25s, 220nm), and thermal annealing (140℃, 5min); spin-coated PEDOT:PSS solution on the surface of the photoactive layer to prepare anode buffer layer (3000rpm, 60s) , 30nm), and thermal annealing (150℃, 5min); A metal anode Ag (100nm) was vapor-deposited on the anode buffer layer. Under standard test conditions (AM1.5, 100mW / cm 2 ), the measured open circuit voltage of the device (V OC ) = 0.56V, short-circuit current (J SC )=8.2mA / cm 2 , Fill factor (FF) = 0.53, photoelectric conversion ...

Embodiment 2

[0028] Clean the substrate composed of transparent substrate layer and transparent conductive cathode ITO with surface roughness less than 1nm, and dry it with nitrogen after cleaning; spin coating ZnO (5000rpm, 40s, 15nm) on the surface of transparent conductive cathode ITO to prepare cathode buffer Layer, and the formed film is thermally annealed (200℃, 60min); P3HT:PC is prepared by spin coating on the cathode buffer layer 61 BM:Tetracene (39.5%:60%:0.5%) photoactive layer (1000rpm, 25s, 220nm), and thermal annealing (140℃, 5min); spin-coating PEDOT:PSS solution on the surface of the photoactive layer to prepare anode buffer Layer (3000rpm, 60s, 30nm), and thermal annealing (150℃, 5min); metal anode Ag (100nm) is vapor-deposited on the anode buffer layer. Under standard test conditions (AM1.5, 100mW / cm 2 ), the measured open circuit voltage of the device (V OC ) = 0.55V, short-circuit current (J SC )=8.9mA / cm 2 , Fill factor (FF) = 0.57, photoelectric conversion efficiency...

Embodiment 3

[0030] Clean the substrate composed of transparent substrate layer and transparent conductive cathode ITO with surface roughness less than 1nm, and dry it with nitrogen after cleaning; spin coating ZnO (5000rpm, 40s, 15nm) on the surface of transparent conductive cathode ITO to prepare cathode buffer Layer, and the formed film is thermally annealed (200℃, 60min); P3HT:PC is prepared by spin coating on the cathode buffer layer 61 BM:Tetracene (39%:60%:1%) photoactive layer (1000rpm, 25s, 220nm), and thermal annealing (140℃, 5min); spin-coating PEDOT:PSS solution on the surface of the photoactive layer to prepare anode buffer Layer (3000rpm, 60s, 30nm), and thermal annealing (150℃, 5min); metal anode Ag (100nm) is vapor-deposited on the anode buffer layer. Under standard test conditions (AM1.5, 100mW / cm 2 ), the measured open circuit voltage of the device (V OC ) = 0.56V, short-circuit current (J SC )=9.1mA / cm 2 , Fill factor (FF) = 0.58, photoelectric conversion efficiency (PC...

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Abstract

The invention discloses a high-mobility organic micromolecule-doped ternary solar cell, and belongs to the field of organic polymer photovoltaic devices or organic semiconductor thin-film solar cells. An inversion structure is adopted by the cell; the cell sequentially comprises a substrate layer, a transparent conductive cathode ITO, a cathode buffer layer, a photoactive layer, an anode buffer layer and a metal anode from bottom to top; and the photoactive layer comprises the following components in percentage by weight: 38%-39.5% of an electron donor, 57%-60% of an electron acceptor and 0.5%-5% of high-mobility organic micromolecules. A high-mobility organic micromolecule material is added to the photoactive layer; the transmission capability of holes in the photoactive layer is improved; and the collection capability of the holes on the anode is improved, so that the short-circuit current density of the device is improved; and the photoelectric conversion property of the device is finally improved. The high-mobility organic micromolecule-doped ternary solar cell has the advantages of high photoelectric conversion property, simplicity in preparation technology, short manufacture procedure and low cost.

Description

Technical field [0001] The invention belongs to the field of organic polymer photovoltaic devices or organic semiconductor thin film solar cells, and specifically relates to an organic thin film solar cell. Background technique [0002] With the rapid growth of global energy demand, the energy crisis has become the primary problem facing the economic development of all countries. Because solar energy is clean, pollution-free, widely distributed, and inexhaustible, the research on solar photovoltaic power generation to solve the energy crisis has become the focus and hotspot of research in the field of renewable energy. At present, solar cells can be divided into inorganic solar cells and organic solar cells according to the material of the photoactive layer that composes solar cells. Compared with inorganic solar cells, organic solar cells not only have the advantages of simple device preparation process, but also easy synthesis of materials and easy modification of molecular ch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/46
CPCH10K85/622H10K30/00Y02E10/549
Inventor 于军胜王瀚雨郑丁邢珅
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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