Nano-scale mechanical properties of polymer/fullerene bulk hetero-junction films and their influence on photovoltaic cells

Hung Chang Li; K. Koteswara Rao; Jun Yuan Jeng; Yu Jer Hsiao; Tzung Fang Guo; Yean Ren Jeng; Ten Chin Wen

doi:10.1016/j.solmat.2011.05.039

Nano-scale mechanical properties of polymer/fullerene bulk hetero-junction films and their influence on photovoltaic cells

Hung Chang Li, K. Koteswara Rao, Jun Yuan Jeng, Yu Jer Hsiao, Tzung Fang Guo, Yean Ren Jeng, Ten Chin Wen

Research output: Contribution to journal › Article

13 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	2976-2980
Number of pages	5
Journal	Solar Energy Materials and Solar Cells
Volume	95
Issue number	11
DOIs	https://doi.org/10.1016/j.solmat.2011.05.039
Publication status	Published - 2011 Nov

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Renewable Energy, Sustainability and the Environment
Surfaces, Coatings and Films

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Li, H. C., Koteswara Rao, K., Jeng, J. Y., Hsiao, Y. J., Guo, T. F., Jeng, Y. R., & Wen, T. C. (2011). Nano-scale mechanical properties of polymer/fullerene bulk hetero-junction films and their influence on photovoltaic cells. Solar Energy Materials and Solar Cells, 95(11), 2976-2980. https://doi.org/10.1016/j.solmat.2011.05.039

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abstract = "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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Nano-scale mechanical properties of polymer/fullerene bulk hetero-junction films and their influence on photovoltaic cells. / Li, Hung Chang; Koteswara Rao, K.; Jeng, Jun Yuan; Hsiao, Yu Jer; Guo, Tzung Fang ; Jeng, Yean Ren ; Wen, Ten Chin.

In: Solar Energy Materials and Solar Cells, Vol. 95, No. 11, 11.2011, p. 2976-2980.

Research output: Contribution to journal › Article

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