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Organic solar cell and preparation method thereof

A solar cell and organic technology, which is applied in the manufacturing/processing of organic semiconductor devices, organic semiconductor devices, circuits, etc., can solve the problems of unapplied electron transport layers, etc., to reduce production costs, improve device stability, and simple operation. Effect

Inactive Publication Date: 2015-03-04
NANCHANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the shortcomings of high work function and acid corrosion of ITO limit its application in organic solar cells, so it has not been used in electron transport layers.

Method used

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  • Organic solar cell and preparation method thereof
  • Organic solar cell and preparation method thereof
  • Organic solar cell and preparation method thereof

Examples

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Embodiment 1

[0033] Example 1. Method for the preparation of organic solar cells.

[0034] (1) After the patterned ITO glass substrate 1 is ultrasonically cleaned with acetone, detergent, deionized water, and isopropanol, it is dried and exposed to ultraviolet light for 15 minutes to prepare an electron transport substrate for an organic solar cell on the substrate. layer 2, 3;

[0035] (2) Give the photoactive layer to the acceptor material PTB7 and PC 71 BM (mass ratio 2:3) was uniformly mixed, dissolved with 97% chlorobenzene and 3% DIO solution (total concentration 52mg / ml), stirred at 60°C for 48h, filtered and spin-coated on the electron transport layer, That is to obtain the active layer 4, the said rotating speed is 1000rpm, and the time is 2min;

[0036] (3) Dry the sample coated with the active layer for 2h under nitrogen conditions;

[0037] (4) Finally, the sample coated with the dry active layer is transferred to the evaporation equipment, and 7nm molybdenum trioxide 5 (ev...

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Abstract

The invention relates to an organic solar cell and a preparation method thereof. The organic solar cell consists of a transparent substrate, a cathode, an electron transport layer, an optical activation layer, a hole transport layer, an anode and is characterized in that the electron transport layer includes a modification layer and a PEDOT:PSS layer; and the modification layer is made from a material containing amino. According to the preparation method of the electron transport layer, a PEDOT:PSS solution is paved on the surface of the cathode cleaned clearly, and spinning and coating and spin-dry processing are carried out and then annealing is carried out; and the modification layer material solution coating is carried out in a spinning mode and is drying in a spinning mode and then annealing is carried out, thereby obtaining the electron transport layer. According to the invention, the surface of the PEDOT:PSS film is coated with the modification layer material containing amino in a spinning mode, thereby reducing the PEDOT:PSS work function; and thus the energy level relation between all layers is met, so that the PEDOT:PSS layer can be converted into the state beneficial to electron transport. With the alkaline modification layer containing amino, the acid PEDOT:PSS layer can be neutralized, thereby reducing corrosion to the ITO and hygroscopicity and improving stability. Flexible reel-to-reel commercial production of the organic solar cell can be realized well based on normal-temperature preparation. Moreover, the operation is simple; the manufacturing cost is low; and the production efficiency is high.

Description

technical field [0001] The invention belongs to the field of organic solar cells. Background technique [0002] The pressure brought by the current energy crisis has forced countries to invest a lot of manpower, material and financial resources in clean energy fields such as solar cells. Organic solar cells have the characteristics of low cost, light weight, flexibility, and large-area printing, making them the next generation of green energy with commercial application prospects. Organic solar cells are initially composed of an indium tin oxide (ITO) cathode covered by an active layer inserted into poly(3,4-ethylenedioxythiophene):(polystyrenesulfonic acid) (PEDOT:PSS) and a low work function It is realized by the traditional structure in the middle of the negative electrode (such as: aluminum). However, due to the following three aspects: 1. Oxygen diffuses to the photoactive layer through small holes; 2. The grain boundary of the aluminum electrode; 3. Corrosion of ITO ...

Claims

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Application Information

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IPC IPC(8): H01L51/42H01L51/46H01L51/48
CPCH10K85/10H10K30/00H10K30/81H10K71/00H10K2102/00Y02E10/549Y02P70/50
Inventor 陈义旺谌烈章勇谈利承胡笑添
Owner NANCHANG UNIV
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