Morphology, structure, and photovoltaic properties of poly(3-hexylthiophene) and [6,6]-phenyl-C61-butyric acid methyl ester-based ternary blends doping with polystyrene of different tacticities
Morphology, structure, and photovoltaic properties of poly(3-hexylthiophene) and [6,6]-phenyl-C61-butyric acid methyl ester-based ternary blends doping with polystyrene of different tacticities
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不同立构规整度聚苯乙烯掺杂聚(3-己基噻吩)和[6,6]-苯基-C61-丁酸甲酯基三元共混物的形貌、结构和光伏性能
DOI：
10.1002/app.41823
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发表时间：
2015-04
期刊：
影响因子：
--
通讯作者：
Xie YP
中科院分区：
文献类型：
--
作者：
Zhou WH;Zhang L;Hu KX;Xie YP
The influence of the polystyrene of different tacticities on the morphology, phase structure, and photovoltaic properties of poly(3‐hexylthiophene) (P3HT) and [6,6]‐phenyl‐C61‐butyric acid methyl ester (PCBM) blend has been extensively investigated. The atactic polystyrene (aPS) immiscible with P3HT tended to form the phase‐separated and columnar structure at low aPS weight ratio. Besides, the aPS could migrate to the surface of the films with PCBM phase distributing in the interfaces between P3HT and aPS domains at high aPS weight ratio of 75 wt %. The syndiotactic polystyrene (sPS) immiscible with P3HT could induce the crystallization of P3HT at low weight ratio of 3 wt %. The device based on aPS/P3HT/PCBM ternary blend showed of power conversion efficiency (PCE) of 1.2% even at aPS weight ratio of 50 wt %. However, the device based on sPS/P3HT/PCBM exhibited a sharp decrease in PCE value from 2.3% to 0.6% at sPS weight ratio of 3 wt %, due to the change in film morphology. The performance of the solar cell is believed to be determined by the morphology and phase structure of the ternary blends as revealed by the atomic force microscopy and UV‐vis spectra analysis. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci.2015,132, 41823.
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