Method for increasing organic polymer solar cell efficiency

A technology of solar cells and polymers, which is applied in the field of excitons and solar photovoltaics, can solve the problems of low efficiency of organic polymer solar cells, and achieve the effects of increased yield, improved efficiency, and increased light absorption

Inactive Publication Date: 2012-03-28
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the efficiency of organic polymer solar cells is relatively low, so various methods to i

Method used

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  • Method for increasing organic polymer solar cell efficiency
  • Method for increasing organic polymer solar cell efficiency
  • Method for increasing organic polymer solar cell efficiency

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Experimental program
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Embodiment 1

[0046] Embodiment 1: see figure 1As shown, the patterned ITO 20 / glass 10 substrate was cleaned with an organic reagent, and the sheet resistance of the ITO 20 was 15 ohms / square. A PEDOT:PSS 40 layer was prepared on the ITO 20 / glass 10 substrate, and the thickness of the PEDOT:PSS 40 layer was 30nm. A layer of PEDOT:PSS 50 was prepared on the PEDOT:PSS 40 layer, and the thickness of the PEDOT:PSS 50 layer was 20 nm. The PEDOT:PSS 40 and 50 layers on one side are erased until the surface of the ITO 20 is exposed, so that the original PEDOT:PSS 40 and 50 layers form a mesa. On PEDOT:PSS 50 layers, spin-coat one deck P3HT:PCBM blend film 60, the mass concentration of P3HT is 10mg / ml, is solvent with chlorobenzene, the mass ratio of P3HT and PCBM is 1: 1, the P3HT of spin coating: The thickness of the PCBM blend film 60 is 100 nm. A layer of Al electrode 70 is deposited on the P3HT:PCBM blend film 60 by using thermal evaporation technology, and the thickness of the Al electrode...

Embodiment 2

[0047] Embodiment 2: see figure 1 As shown, the patterned ITO 20 / glass 10 substrate was cleaned with an organic reagent, and the sheet resistance of the ITO 20 was 15 ohms / square. A layer of PEDOT:PSS 40 containing Au nanoparticles 30 was prepared on the ITO 20 / glass 10 substrate. The diameter of the Au nanoparticles 30 was 50 nm, and the thickness of the PEDOT:PSS 40 layer was 30 nm. A thin layer of PEDOT:PSS 50 was prepared on the PEDOT:PSS 40 layer, and the thickness of the PEDOT:PSS 50 layer was 20 nm. The PEDOT:PSS 40 and 50 layers on one side are erased until the surface of the ITO 20 is exposed, so that the original PEDOT:PSS 40 and 50 layers form a mesa. On PEDOT:PSS 50 layers, spin-coat one deck P3HT:PCBM blend film 60, the mass concentration of P3HT is 10mg / ml, is solvent with chlorobenzene, the mass ratio of P3HT and PCBM is 1: 1, the P3HT of spin coating: The thickness of the PCBM blend film 60 is 100 nm. A layer of Al electrode 70 is deposited on the P3HT:PCBM ...

Embodiment 3

[0048] Embodiment 3: see figure 1 As shown, the patterned ITO 20 / glass 10 substrate was cleaned with an organic reagent, and the sheet resistance of the ITO 20 was 15 ohms / square. A layer of PEDOT:PSS 40 containing Au nanoparticles 30 was prepared on the ITO 20 / glass 10 substrate. The diameter of the Au nanoparticles 30 was 90 nm, and the thickness of the PEDOT:PSS 40 layer was 30 nm. A layer of PEDOT:PSS 50 was prepared on the PEDOT:PSS 40 layer, and the thickness of the PEDOT:PSS 50 layer was 20 nm. The PEDOT:PSS 40 and 50 layers on one side are erased until the surface of the ITO 20 is exposed, so that the original PEDOT:PSS 40 and 50 layers form a mesa. On PEDOT:PSS 50 layers, spin-coat one deck P3HT:PCBM blend film 60, the mass concentration of P3HT is 10mg / ml, is solvent with chlorobenzene, the mass ratio of P3HT and PCBM is 1: 1, the P3HT of spin coating: The thickness of the PCBM blend film 60 is 100 nm. A layer of Al electrode 70 is deposited on the P3HT:PCBM blend...

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Abstract

The invention discloses a method for increasing an organic polymer solar cell efficiency by using Au surface plasmon. Au nanoparticles with a certain size and concentration are mixed into a PEDOT: PSS hole transporting layer of the cell. The Au nanoparticles are synthesized through a wet chemical method. And chloroauric acid reacts with sodium citrate to obtain the Au nanoparticles which are dispersed in a water-soluble solvent. The Au nanoparticles are mixed with the PEDOT: PSS as a certain proportion and then mixture is spinningly coated on an ITO substrate. Annealing treatment is performed. The hole transporting layer containing the Au nanoparticles are prepared completely. Through using a local electric field enhancement effect of the Au nanoparticles, luminous absorption of the organic polymer solar cell can be increased and further a cell efficiency can be increased.

Description

technical field [0001] The invention relates to the technical field of surface plasmons and solar photovoltaics, in particular to a method for enhancing the efficiency of organic polymer solar cells by using Au surface plasmons. Background technique [0002] In recent years, organic polymer solar cells have become the focus of research by scientists at home and abroad due to their light weight, low cost, simple preparation, and flexible devices. More and more workers are working on polymer solar cells. Research on solar cell related materials and device technology. However, the efficiency of organic polymer solar cells is relatively low, so various methods to improve the efficiency of organic polymer solar cells have attracted the attention of researchers. [0003] In recent years, metal surface plasmons, as a kind of light-trapping structure, are used to improve the light absorption of solar cells, which has attracted widespread attention from domestic and foreign scientif...

Claims

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Application Information

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IPC IPC(8): H01L51/48
CPCY02E10/549Y02P70/50
Inventor 张兴旺高红丽谭海仁尹志岗吴金良
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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