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Polymer solar cell and preparation method thereof

A solar cell and polymer technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve problems such as low energy conversion efficiency, and achieve the effects of improving energy conversion efficiency, improving energy conversion efficiency, and improving dissociation efficiency.

Active Publication Date: 2020-01-03
BEIJING TECHNOLOGY AND BUSINESS UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After more than 20 years of development, the energy conversion efficiency of polymer solar cells has been significantly improved, but compared with mature inorganic solar cells, the energy conversion efficiency of polymer solar cells is still relatively low

Method used

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  • Polymer solar cell and preparation method thereof
  • Polymer solar cell and preparation method thereof
  • Polymer solar cell and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0062] Preparation of active layer solution

[0063] (1) With PTB7: PC 71 The BM mixed solution is the first active layer solution;

[0064] (2) Using chlorobenzene as a solvent, in a PTB7:PC71BM mixed solution with a mass / volume (w / v) ratio of 10mg / ml:15mg / ml, mix PTB7:PC by volume 71 The second active layer solution was prepared with 3% DIO of the BM mixed solution and stored at room temperature;

[0065] (3) PTB7:PC with a mass / volume (w / v) ratio of 10mg / ml:15mg / ml 71 BM mixed solution incorporated by volume accounted for PTB7:PC 71 The third active layer solution was prepared by 0.75% PEG of the BM mixed solution, and stored at room temperature;

[0066] (4) PTB7:PC with a mass / volume (w / v) ratio of 10mg / ml:15mg / ml 71 Simultaneous incorporation of PTB7:PC by volume in the BM mixed solution 71 The fourth active layer solution was prepared by 3% DIO and 0.75% PEG of the BM mixed solution, and stored at room temperature;

[0067] Use a cotton swab dipped in ITO lotion ...

Embodiment 1

[0089] Preparation and performance testing of polymer solar cells doped with 3% DIO and 0.75% PEG additives

[0090] PTB7:PC at a mass / volume (w / v) ratio of 10mg / ml:15mg / ml using chlorobenzene as solvent 71 BM mixed solution incorporated by volume accounted for PTB7:PC 71 The active layer solution was prepared with 3% DIO and 0.75% PEG of BM mixed solution and stored at room temperature.

[0091] The operation was exactly the same as that of Comparative Example 1 except in the active layer solution. image 3 Schematic diagram of the fabricated device structure.

[0092] The performance of the polymer solar cell was measured according to the method described in Comparative Example 1, and the results are shown in Table 1. The current density-voltage characteristic curve of the prepared polymer solar cell is as follows: image 3 shown.

Embodiment 2

[0094] Preparation and performance testing of polymer solar cells doped with 3% DIO and 0.25% PEG additives

[0095] The procedure was exactly the same as in Example 1, except that the content of PEG in the active layer solution was 0.25% by volume. The performance of the polymer solar cell was measured according to the method described in Comparative Example 1, and the results are shown in Table 1.

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Abstract

The invention discloses a polymer solar cell, which comprises a substrate, an anode layer, an anode buffer layer, an active layer and a cathode layer sequentially stacked from bottom to top, wherein the active layer comprises (1) PTB7 or PM7, (2) PC71BM or ITIC, and (3) an additive; the additive comprises a first additive and a second additive, the first additive is 1, 8-diiodooctane, 1, 8-dibromooctane, chloronaphthalene, 1, 8-octanedithiol or diphenyl ether, and the second additive is polyethylene glycol. DIO and PEG double additives are doped in a PTB7:PC71BM mixed solution; the dissociation efficiency of photo-induced excitons of the polymer solar cell, the transport efficiency of charge carriers and the collection efficiency of carriers by an electrode are improved by utilizing the morphology of the active layer improved by the double additives and the conductivity of the anode buffer layer, and the energy conversion efficiency of the polymer solar cell is remarkably improved.

Description

technical field [0001] The present invention relates to the field of photovoltaic material and device preparation, in particular to a polymer solar cell and a preparation method thereof. Background technique [0002] Energy is an important material basis for the survival and development of human society. Traditional fossil energy sources such as oil, coal and natural gas are facing a crisis of depletion on the one hand and cannot meet the growing demand of the economy and society, and on the other hand, burning fossil energy has caused huge damage to the environment. Therefore, finding clean and new renewable energy has become an urgent need of human society. Compared with human society, solar energy has the characteristics of inexhaustible, inexhaustible, and non-polluting to the environment, and has received increasing attention and attention from people. Silicon-based solar cells have achieved great commercial success, but their development has been limited to a certain...

Claims

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Application Information

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IPC IPC(8): H01L51/42H01L51/44H01L51/46H01L51/48
CPCH10K85/141H10K85/111H10K85/1135H10K30/451H10K30/81H10K2102/00Y02E10/549
Inventor 李熊代庭婷张莹莹
Owner BEIJING TECHNOLOGY AND BUSINESS UNIVERSITY
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