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High‐Efficiency Organic Solar Cells Based on End‐Functional‐Group‐Modified Poly(3‐hexylthiophene)
Author(s) -
Kim Jong Soo,
Lee Youngmin,
Lee Ji Hwang,
Park Jong Hwan,
Kim Jin Kon,
Cho Kilwon
Publication year - 2010
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200902803
Subject(s) - materials science , organic solar cell , polymer solar cell , energy conversion efficiency , acceptor , active layer , annealing (glass) , charge carrier , chemical engineering , solar cell , photovoltaic system , photoactive layer , optoelectronics , nanotechnology , polymer , layer (electronics) , composite material , engineering , ecology , physics , thin film transistor , biology , condensed matter physics
Photovoltaic devices of end‐functional‐group‐modified poly 3‐(hexylthiophene)/[6,6]‐phenyl‐C 61 butyric acid methyl ester (P3HT:PCBM; see figure) are fabricated with thermal annealing. The surface energies between donor and acceptor were matched by varying the end group, which can be used to control vertical and horizontal phase separation in the active layer, leading mixed nanomorphology with optimized phase separation, low series resistance, and high performance for solar cell devices.