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Solar cell based on nano-onion-carbon composite anode buffer layer

A technology for solar cells and composite anodes, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of short device life and low photoelectric conversion efficiency, reduce contact barriers, improve air stability and device life, improve Effect of Carrier Transport Efficiency

Active Publication Date: 2016-11-09
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 invention provides a solar cell based on a nano-onion carbon composite anode buffer layer. By introducing a layer of composite anode buffer layer, the anode buffer layer is optimized and modified to solve the problem of low photoelectric conversion efficiency of organic solar cells in the prior art. Problems with short device life

Method used

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  • Solar cell based on nano-onion-carbon composite anode buffer layer
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  • Solar cell based on nano-onion-carbon composite anode buffer layer

Examples

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Embodiment 1

[0027] A solar cell with a shape and structure such as figure 1 As shown, the positive structure is adopted, and the arrangement from bottom to top is as follows: substrate 1, transparent conductive anode ITO 2, anode buffer layer, photoactive layer 4, cathode buffer layer 5, metal cathode 6, the anode buffer layer is conductive Polymer PEDOT:PSS.

[0028] The method for manufacturing a solar cell with a conventional structure provided in this embodiment is as follows: cleaning the substrate composed of a transparent substrate 1 and a transparent conductive anode ITO 2 whose surface roughness is less than 1 nm, and blowing dry with nitrogen after cleaning; The surface of the transparent conductive anode ITO 2 is spin-coated with an anode buffer layer of PEDOT:PSS (3500rpm, 60s, 45nm), and the formed film is baked (150°C, 60min); the anode buffer layer is prepared by spin coating The photoactive layer 4 (1200rpm, 40s) containing PTB7 / PCBM (the mass percentage of PTB7 and PCBM ...

Embodiment 2

[0030] Such as figure 1 As shown, a solar cell based on a nano-onion carbon composite anode buffer layer adopts a positive structure, and is arranged in sequence from bottom to top: substrate 1, transparent conductive anode ITO 2, composite anode buffer layer 3, photoactive layer 4, Cathode buffer layer 5, metal cathode 6, the composite anode buffer layer 3 is composed of conductive polymer PEDOT:PSS, nano-onion carbon and small molecule materials, and the mass percentages of each component in the composite anode buffer layer 3 are respectively: Conductive polymer PEDOT: PSS42%, nano onion carbon 45%, small molecule material 13%, the thickness of the cathode buffer layer 5 is 20-40nm.

[0031] In this embodiment, the structure of the nano-onion carbon is as follows figure 2 As shown, the nano-onion carbon (Carbon Onions, CNOs) used in this embodiment is the abbreviation of nano-onion-like fullerene. As a new type of carbon material, nano-onion carbon has ultra-high conductiv...

Embodiment 3

[0034] Such as figure 1 As shown, a solar cell based on a nano-onion carbon composite anode buffer layer adopts a positive structure, and is arranged in sequence from bottom to top: substrate 1, transparent conductive anode ITO 2, composite anode buffer layer 3, photoactive layer 4, Cathode buffer layer 5, metal cathode 6, the composite anode buffer layer 3 is composed of conductive polymer PEDOT:PSS, nano-onion carbon and small molecule materials, and the mass percentages of each component in the composite anode buffer layer 3 are respectively: Conductive polymer PEDOT: PSS42%, nano onion carbon 35%, small molecule material 23%, the thickness of the cathode buffer layer 5 is 20-40nm.

[0035] In this embodiment, the structure of the nano-onion carbon is as follows figure 2 As shown, the nano-onion carbon (Carbon Onions, CNOs) used in this embodiment is the abbreviation of nano-onion-like fullerene. As a new type of carbon material, nano-onion carbon has ultra-high conductiv...

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Abstract

The invention, which belongs to the organic semiconductor thin-film solar battery field, discloses a solar cell based on a nano-onion-carbon composite anode buffer layer. On the basis of an ortho type structure, the solar cell comprises a substrate (1), a transparent conductive anode ITO (2), a composite anode buffer layer (3), an optical active layer (4), a cathode buffer layer (5), and a metal cathode (6), wherein the layers are arranged successively from bottom to top. The composite anode buffer layer is formed based on compounding of a conductive polymer PEDOT:PSS, a micromolecule material F4-TCNQ, and a nano onion carbon material. The conductive polymer PEDOT:PSS is doped with the micromolecule material F4-TCN with a certain proportion and a high-conductivity nano onion carbon material, so that the photoelectric conversion efficiency of the device is improved, the air stability of the organic thin-film solar cell is enhanced, and the service life is prolonged.

Description

technical field [0001] The invention relates to the field of organic polymer photovoltaic devices or organic semiconductor thin film solar cells, in particular to a solar cell based on a nano-onion carbon composite anode buffer layer. Background technique [0002] With the global energy demand increasing year by year, the effective use of renewable energy has become an urgent problem to be solved. At present, most of the energy used in the world comes from the extraction of fossil fuels, including oil, natural gas and coal. However, these resources are limited. Solar energy, which accounts for more than 99% of the total energy of the earth, has the advantages of inexhaustibility, inexhaustibility, and no pollution, so it has become one of the new energy sources developed and utilized by scientists from all over the world. Currently, active layer materials can be classified into inorganic semiconductor materials and organic semiconductor materials according to the different...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/44H01L51/46
CPCH10K85/211H10K30/00H10K30/821H10K30/80Y02E10/549
Inventor 于军胜郑丁王瀚雨范谱
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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