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Enhanced spectral response in polymer bulk heterojunction solar cells by using active materials with complementary spectra

Authors :
Zhong Yo Ho
Chuan-Pei Lee
Kuo-Chuan Ho
Chih-Wei Chu
Dhananjay Kekuda
Jen Hsien Huang
Source :
Solar Energy Materials and Solar Cells. 94:22-28
Publication Year :
2010
Publisher :
Elsevier BV, 2010.

Abstract

We have fabricated organic photovoltaic devices with blends of poly[9,9′-dioctyl-fluorene- co -bithiophene] (F8T2) and fullerene as an electron donor and electron acceptor, respectively. A significant improvement of the photovoltaic efficiency was found in device by using active materials with complementary spectra. The different weight ratios of composite film were also performed to correlate between morphology and the device performance. A power conversion efficiency (PCE) up to 2.0% with an open-circuit voltage of 0.85 V and a short-circuit current ( J SC ) of 5.3 mA/cm 2 , was achieved by blending the F8T2 with [6,6]-phenyl-C71-butyric acid methyl ester (PC[70]BM).

Details

ISSN :
09270248
Volume :
94
Database :
OpenAIRE
Journal :
Solar Energy Materials and Solar Cells
Accession number :
edsair.doi...........69fbdfc3f7b78aa32da0fec0bc32182e
Full Text :
https://doi.org/10.1016/j.solmat.2009.02.019