Effect of solvent on the performance and morpology of polymer photovoltaic devices

Title
Effect of solvent on the performance and morpology of polymer photovoltaic devices
Authors
김연수이영관김재경서은옥이은우이원주한성환이수형
Keywords
Solvent effect; P3HT; Morphology; Bulk-hetero-junction solar cells
Issue Date
2010-07
Publisher
Current applied physics
Citation
VOL 10, NO 4, 985-989
Abstract
In the polymer photovoltaic devices (PVDs), the performance of devices was strongly influenced by region-regularity, number average molecular weight and casting solvents of polymers. In this work, we fabricated p–n bulk-hetero-junction PVDs based on poly(3-hexylthiophene) (P3HT) and [6,6]-phenyl- C60-butyric acid methyl ester (PCBM) using various solvents such as chloroform (CF), chlorobenzene (CB), dichlorobenzene (DCB), and mixed solvent (CF/CB, CF/DCB). Thin film of active layer with P3HT/ PCBM was prepared by spin coating and thermal annealing at 150 ℃ with fixed thickness about 110 nm by adjusting solution concentration. The crystalline morphology and layered phase for the active layer were studied by atomic force microscopy and X-ray diffraction, respectively. We investigated the performance of solar cells according to different morphology and crystallinity of active layer by various solvent and mixed solvent.
URI
http://pubs.kist.re.kr/handle/201004/37414
ISSN
1567-1739
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KIST Publication > Article
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