Enhanced Power Conversion Efficiency of Polymer Solar Cells Through the Use of 4-Fluorobenzonitrile as an Additive

Citation data:

Journal of Nanoelectronics and Optoelectronics, ISSN: 1555-130X, Vol: 6, Issue: 3, Page: 338-342

Publication Year:
2011
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Readers 2
Repository URL:
http://scholarworks.unist.ac.kr/handle/201301/17013
DOI:
10.1166/jno.2011.1181
Author(s):
Woo, Sungho; Kwon, Hyeok Yong; Jeong, Seonju; Lee, Sang Ju; Park, Lee Soon; Kim, Youngkyoo; Han, Yoon Soo
Publisher(s):
American Scientific Publishers; AMER SCIENTIFIC PUBLISHERS
Tags:
Materials Science; Engineering; PHOTOVOLTAIC CELLS; INTERPENETRATING NETWORK; MORPHOLOGY; POLY(3-HEXYLTHIOPHENE); METHANOFULLERENES; PERFORMANCE; FILMS; 4-Fluorobenzonitrile; Additive; Thermal Annealing; Polymer Solar Cell; P3HT; PCBM
article description
In this work, 4-fluorobenzonitrile (4-FBN) was introduced as a new additive compound into the photoactive layer of a polymer solar cell (PSC) based on a poly(3-hexylthiophene):[6,6]-phenyl-C- butyric acid methyl ester (P3HT:PCBM) blend system. The incorporation of 4-FBN allowed both increased light absorption (φ-φ* transition efficiency) in the visible region and enhanced X-ray diffraction peak of (100), which is attributed to the enhanced crystallinity of the P3HT chains, leading to a higher short-circuit current (J) and fill factor (FF). Thus, the overall efficiency of the annealed PSCs was considerably improved from 3.57% (without 4-FBN) to 4.41% (with 4-FBN). © 2011 American Scientific Publishers All rights reserved.