Highly Efficient Organic Solar Cells with Improved Vertical Donor-Acceptor Compositional Gradient Via an Inverted Off-Center Spinning Method

A novel, yet simple solution fabrication technique to address the trade‐off between photocurrent and fill factor in thick bulk heterojunction organic solar cells is described. The inverted off‐center spinning technique promotes a vertical gradient of the donor–acceptor phase‐separated morphology, en...

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Published inAdvanced materials (Weinheim) Vol. 28; no. 5; pp. 967 - 974
Main Authors Huang, Jiang, Carpenter, Joshua H., Li, Chang-Zhi, Yu, Jun-Sheng, Ade, Harald, Jen, Alex K.-Y.
Format Journal Article
LanguageEnglish
Published Germany Blackwell Publishing Ltd 03.02.2016
Wiley
Subjects
bulk heterojunctions
Energy conversion efficiency
Heterojunctions
off-center spin
organic solar cells
Photocurrent
Photovoltaic cells
power conversion efficiency
Solar cells
Spinning
Spinning (materials)
Tradeoffs
organic solar cells
power conversion efficiency
bulk heterojunctions
off-center spin
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Summary:A novel, yet simple solution fabrication technique to address the trade‐off between photocurrent and fill factor in thick bulk heterojunction organic solar cells is described. The inverted off‐center spinning technique promotes a vertical gradient of the donor–acceptor phase‐separated morphology, enabling devices with near 100% internal quantum efficiency and a high power conversion efficiency of 10.95%.
Bibliography:Open Foundation of State Key Laboratory of Electronic Thin Films and Integrated Devices - No. KFJJ201410
Office of Naval Research - No. N000141410531
istex:6A42786B30C333F9E2EA58C8FFD812802F46F09F
Fundamental Research Funds for the Central Universities - No. ZYGX2014J046
China Scholarship Council - No. 201308510084
ark:/67375/WNG-GZGS1BJX-5
ArticleID:ADMA201504014
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
EE0006710
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
DOE-UW-Jen--25
ISSN:0935-9648
1521-4095
1521-4095
DOI:10.1002/adma.201504014