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首页> 外文期刊>Thin Solid Films >Field effect measurements on charge carrier mobilities in various polymer-fullerene blend compositions
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Field effect measurements on charge carrier mobilities in various polymer-fullerene blend compositions

机译：各种聚合物-富勒烯共混物中电荷载流子迁移率的场效应测量

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摘要

In this study we investigated materials typically used in polymer photovoltaics. Field effect measurements were performed in order to determine the hole mobilities in the conjugated polymer poly(3-hexylthiophene) (P3HT) and the electron mobilities in the methanofullerene[6,6]-phenyl C_(61)-butyric acid methyl ester (PCBM), and, particularly, in the polymer-fullerene composite blends. Regarding the pure films, electron mobilities in PCBM were found to be in the 10~(-2) cm~2/Vs range, and hole mobilities in P3HT were found to be in the 10~(-3) cm~2/Vs range. In the PCBM:P3HT blends, it was found that varying the PCBM content in PCBM:P3HT blends led to a steep increase in electron mobility with increasing PCBM content, while the hole mobility was found to slightly decrease with the increasing PCBM concentration. In 2:1 PCBM:P3HT tempered blends, the charge carrier mobilities were found to be roughly balanced, at 10~(-3) cm~2/Vs. For improved electron transport in the blends, tempering was found to be crucial.
机译：在这项研究中，我们研究了通常用于聚合物光伏的材料。进行场效应测量，以确定共轭聚合物聚（3-己基噻吩）（P3HT）中的空穴迁移率和甲基富勒烯[6,6]-苯基C_（61）-丁酸甲酯（PCBM）中的电子迁移率），特别是在聚合物-富勒烯复合混合物中。关于纯膜，发现PCBM中的电子迁移率在10〜（-2）cm〜2 / Vs范围内，而P3HT中的空穴迁移率在10〜（-3）cm〜2 / Vs范围内范围。在PCBM：P3HT混合物中，发现改变PCBM：P3HT混合物中的PCBM含量会导致电子迁移率随PCBM含量的增加而急剧增加，而空穴迁移率随PCBM浓度的增加而略有下降。在2：1 PCBM：P3HT回火混合物中，发现载流子迁移率大致平衡，为10〜（-3）cm〜2 / Vs。为了改善共混物中的电子传输，发现回火至关重要。

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