TY - JOUR
T1 - Nano-scale mechanical properties of polymer/fullerene bulk hetero-junction films and their influence on photovoltaic cells
AU - Li, Hung Chang
AU - Koteswara Rao, K.
AU - Jeng, Jun Yuan
AU - Hsiao, Yu Jer
AU - Guo, Tzung Fang
AU - Jeng, Yean Ren
AU - Wen, Ten Chin
N1 - Funding Information:
The author Guo would like to thank the National Science Council (NSC) in Taiwan ( NSC99-2113-M-006-008-MY3 ), the Asian Office of Aerospace Research and Development (AOARD) ( AOARD-10-4054 ) and NCKU Landmark Project for financially supporting this research. The author Jeng is grateful for the financial support from NSC ( NSC96-2120-M-194-003 ) and AOARD ( AOARD-06-4053 ).
Copyright:
Copyright 2011 Elsevier B.V., All rights reserved.
PY - 2011/11
Y1 - 2011/11
N2 - Mechanical properties of poly(3-hexylthiophene) (P3HT)/[6,6]-phenyl-C61- butyric acid methyl ester (PCBM) blend films, prepared under different processing conditions, were evaluated by nanoindentation. Photovoltaic devices fabricated using above active layers presented the highest power conversion efficiencies for blend films having lowest Young's modulus (20.73 GPa) and hardness (649 MPa), as measured by a nanoidentator under optimized conditions of blend proportion (1:1), film drying rate (slow) and annealing temperature and time (110 °C and 10 min). It implies that the degree of nano-scale phase separation for the P3HT:PCBM blend is strongly correlated with the mechanical properties in the nanodimension. The nanoindentation is a method to estimate nano-scale mechanical properties of blend films and the performance of photovoltaic cells.
AB - Mechanical properties of poly(3-hexylthiophene) (P3HT)/[6,6]-phenyl-C61- butyric acid methyl ester (PCBM) blend films, prepared under different processing conditions, were evaluated by nanoindentation. Photovoltaic devices fabricated using above active layers presented the highest power conversion efficiencies for blend films having lowest Young's modulus (20.73 GPa) and hardness (649 MPa), as measured by a nanoidentator under optimized conditions of blend proportion (1:1), film drying rate (slow) and annealing temperature and time (110 °C and 10 min). It implies that the degree of nano-scale phase separation for the P3HT:PCBM blend is strongly correlated with the mechanical properties in the nanodimension. The nanoindentation is a method to estimate nano-scale mechanical properties of blend films and the performance of photovoltaic cells.
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U2 - 10.1016/j.solmat.2011.05.039
DO - 10.1016/j.solmat.2011.05.039
M3 - Article
AN - SCOPUS:80051552846
SN - 0927-0248
VL - 95
SP - 2976
EP - 2980
JO - Solar Energy Materials and Solar Cells
JF - Solar Energy Materials and Solar Cells
IS - 11
ER -
