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Effects of the pyromellitic dianhydride cathode interfacial layer on characteristics of organic solar cells based on poly(3-hexylthiophene-2,5-diyl) and [6,6]-phenyl C61 butyric acid methyl ester

Published online by Cambridge University Press:  31 January 2011

Eunkyoung Nam ,
Mi Ran Moon ,
Jungwoo Kim ,
Donggeun Jung ,
Hyoungsub Kim ,
Heeyeop Chae  and
Junsin Yi
Mi Ran Moon
Affiliation:
Department of Physics, Brain Korea 21 Physics Research Division, Institute of Basic Science, Sungkyunkwan University, Suwon, 440-746 Republic of Korea
Jungwoo Kim
Affiliation:
School of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon, 440-746 Republic of Korea
Donggeun Jung*
Affiliation:
Department of Physics, Brain Korea 21 Physics Research Division, Institute of Basic Science, Sungkyunkwan University, Suwon, 440-746 Republic of Korea
Hyoungsub Kim
Affiliation:
School of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon, 440-746 Republic of Korea
Heeyeop Chae
Affiliation:
Department of Chemical Engineering, Sungkyunkwan University, Suwon, 440-746 Republic of Korea
Junsin Yi
Affiliation:
School of Information and Communication Engineering, Sungkyunkwan University, Suwon, 440-746 Republic of Korea
*
a)Address all correspondence to this author. e-mail: djung@skku.ac.kr
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Abstract

This study examined the performance of poly(3-hexylthiophene-2,5-diyl)(P3HT)- and [6,6]-phenyl C61 butyric acid methyl ester (PCBM)-based organic solar cells (OSCs) with a pyromellitic dianhydride (PMDA) cathode interfacial layer between the active layer and cathode. The effect of inserting the cathode interfacial layer with different thicknesses was investigated. For the OSC samples with a 0.5 nm thick PMDA layer, the power conversion efficiency (PCE) was approximately 2.77% under 100 mW/cm2 (AM1.5) simulated illumination. It was suggested that the PMDA cathode interfacial layer acts as an exciton blocking layer, leading to an enhancement of the OSC performance.

Keywords

PhotovoltaicOrganic
Type
Articles
Information
Journal of Materials Research , Volume 25 , Issue 5 , May 2010 , pp. 866 - 870
Copyright
Copyright © Materials Research Society 2010

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