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Investigation of optimum conditions for high-efficiency organic thin-film solar cells based on polymer blends

Paper ID Volume ID Publish Year Pages File Format Full-Text
29035 44113 2006 4 PDF Available
Title
Investigation of optimum conditions for high-efficiency organic thin-film solar cells based on polymer blends
Abstract

Organic thin-film solar cells based on poly(3-hexylthiophene) (P3HT) and [6,6]-phenyl-C61-buteric acid methyl ester (PCBM) blend system attracts most attention. We studied the effects of P3HT:PCBM blend composition and thermal annealing treatment on the device performance. P3HT:PCBM weight ratio mainly influenced short circuit current (JSC) and power conversion efficiency (PCE). For the cells with P3HT:PCBM ratio of 1:0.66 showed the maximum PCE of 1.4%. Thermal annealing improved the photovoltaic characteristics and we achieved PCE of 2.0% with the annealed device. Furthermore, we observed transient photocurrent responses of devices to solar simulated light (air mass 1.5 G, 100 mW/cm2) irradiation. Annealing treatment resulted in suppression of the decay of photocurrent, suggesting that carrier transport network was improved by thermal annealing.

Keywords
Organic thin-film solar cells; Polythiophene; Fullerene; Bulk heterojunction; Photocurrent response
First Page Preview
Investigation of optimum conditions for high-efficiency organic thin-film solar cells based on polymer blends
Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 182, Issue 3, 10 September 2006, Pages 269–272
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering