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Efficient Thin Polymer Solar Cells with Post-Annealing

Published online by Cambridge University Press:  01 February 2011

Shun-Wei Liu ,
Chih-Chien Lee ,
Ping-Tsung Huang ,
Chin-Ti Chen  and
Juen-Kai Wang
Shun-Wei Liu
Affiliation:
amigoliu@chem.sinica.edu.tw, Academia Sinica, Institute of Chemistry, No. 128, Academia Rd., Taipei 11542, Taiwan, Taipei, N/A, Taiwan, +886-02-27898538, +886-02-27831237
Chih-Chien Lee
Affiliation:
cclee@et.ntust.edu.tw, National Taiwan University of Science and Technology, Department of Electronic Engineering, Taipei, 106, Taiwan
Ping-Tsung Huang
Affiliation:
pthuang@ritdisplay.com, RiTdisplay Corporation, Hsin-Chu, 303, Taiwan
Chin-Ti Chen
Affiliation:
cchen@chem.sinica.edu.tw, Academia Sinica, Institute of Chemistry, Taipei, 11542, Taiwan
Juen-Kai Wang
Affiliation:
jkwang@ntu.edu.tw, National Taiwan University, Center for Condensed Matter Sciences, Taipei, 106, Taiwan
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Abstract

The authors report the study of the dependence of the device performance of polymer solar cells based on single 50-nm heterojunction poly(3-hexylthiophene)/[6,6]-phenyl-C61-butyric acid methylester (P3HT/PCBM) layer on annealing process. Annealing before and after cathode deposition were performed for comparison. In the case of post-annealing at 150¢XC for 60 min., the device attains a conversion efficiency of 4.9%, a fill factor of 53 %, and an open-circuit voltage of 0.67 V. These values are comparable with the highest values reported previously. The annealing process is expected to modify the network morphology of the P3HT/PCBM layer. This study demonstrates that it is possible to attain good solar cell performance with the combination of single thin active layer and post-annealing treatment. This may open up an opportunity to fabricate tandem polymer solar cells.

Keywords

photovoltaicorganicoptoelectronic
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1031: Symposium H – Nanostructured Solar Cells , 2007 , 1031-H09-36
Copyright
Copyright © Materials Research Society 2008

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