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The effect of a buffer layer on the photovoltaic properties of solar cells with P3OT:fullerene composites

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Authors
Yoo, Insun; Lee, Munjae; Lee, Changhee; Kim, Dae-Won; Moon, In Sik; Hwang, Do-Hoon
Issue Date
2005
Publisher
Elsevier
Citation
Synth. Met. 153 (2005) 97
Keywords
Organic solar cellPhotovoltaic propertiesBuffer layer
Abstract
We have studied the effect of buffer layers such as poly(3,4-ethylene dioxythiophene):poly(styrenesulfonate) (PEDOT:PSS), copper phthalocyanine (CuPC), and gold metal on the photovoltaic properties of solar cells with poly(3-octylthiophene) (P3OT):fullerene composites. The device structure is ITO/buffcr/P3OT:C60/BCP/LiF/Al where bathocuproine (BCP) was used as an exciton-blocking layer. The cell with a PEDOT:PSS buffer layer exhibits an open circuit voltage of Voc 0.4 V and the power conversion efficiency of η 1.8%. The incident photon to collected election efficiency (IPCE) is about 30% at 520 nm. The cell with a CuPC buffer layer exhibits slightly higher Voc 0.46 V and power efficiency of η 2.1%. This result indicates that a good buffer layer at the polymer/electrode interfaces can enhance the Voc. and die power conversion efficiency.
ISSN
0379-6779
Language
English
URI
http://hdl.handle.net/10371/13751
DOI
https://doi.org/10.1016/j.synthmet.2005.07.182
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Electrical and Computer Engineering (전기·정보공학부)Journal Papers (저널논문_전기·정보공학부)
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