Journal
APPLIED PHYSICS LETTERS
Volume 95, Issue 4, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3192360
Keywords
Auger electron spectra; phase separation; photoconductivity; polymers; solar cells
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Funding
- ERC program of the Korea Science and Engineering Foundation (KOSEF) funded by the Korea Ministry of Education, Science and Technology (MEST) [R11-2009-04501002-0) 2009]
- CNMM [M102KN010001-08K1401-00210]
- Fundamental R&D Program for Core Technology of Materials funded by the Ministry of Knowledge Economy, Republic of Korea
- Korea Evaluation Institute of Industrial Technology (KEIT) [K0006001] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [과C6A1904] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Polymer photovoltaic (PV) device prepared with a vertical phase separation has intensified the research on the effectiveness of the concentration graded active layer. In this paper, a polymer PV device with a poly(3-hexylthiophene)/[6,6]-phenyl C-61-butyric acidmethyl ester (P3HT/PCBM) bilayers active film with a concentration gradient has been fabricated via solution process. The concentration variation has been confirmed by the Auger spectroscopy. The devices showed an enhanced photocurrent density and power conversion efficiency compared to those of the bulk heterojunction PV prepared under the same fabrication condition.
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