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Journal of Photonics for Energy

Enhancement of poly(3-hexylthiophene)-based solar cell with thermal-evaporated [6,6]-phenyl-C60 butyric acid methyl ester layers
Author(s): Wei-Hsuan Tseng; Jeng-Yu Wang; Chung-Yen Wang; Hung Lo; Chih-I Wu; Mei-Hsin Chen
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Paper Abstract

We provide a more compact fabrication process than the prior work using [6,6]-phenyl C61-butyric acid methyl ester (PCBM) buffer layer to enhance the performance of organic solar cells. The device with an extra PCBM layer exhibits an improved power conversion efficiency (PCE) of 20% as compared with the devices with conventional structures. Ultraviolet and x-ray photoemission spectroscopy indicate that thermal annealing treatments result in better mixture structures of PCBM layers with poly(3-hexylthiophene) at the blended surfaces. Therefore, the device with inserted PCBM provides more ideal hetero-structures and vertically graded PCBM distribution to optimize the charge extraction efficiency.

Paper Details

Date Published: 27 April 2012
PDF: 8 pages
J. Photon. Energy. 2(1) 021009 doi: 10.1117/1.JPE.2.021009
Published in: Journal of Photonics for Energy Volume 2, Issue 1
Show Author Affiliations
Wei-Hsuan Tseng, National Taiwan Univ. (Taiwan)
Jeng-Yu Wang, National Taiwan Univ. (Taiwan)
Chung-Yen Wang, National Taiwan Univ. (Taiwan)
Hung Lo, National Taiwan Univ. (Taiwan)
Chih-I Wu, National Taiwan Univ. (Taiwan)
Mei-Hsin Chen, National Dong Hwa Univ. (Taiwan)

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