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首页> 外文期刊>Advanced Functional Materials >Effects of the Molecular Weight and the Side-Chain Length on the Photovoltaic Performance of Dithienosilole/Thienopyrrolodione Copolymers
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Effects of the Molecular Weight and the Side-Chain Length on the Photovoltaic Performance of Dithienosilole/Thienopyrrolodione Copolymers

机译：分子量和侧链长度对二噻吩甲硅烷/噻吩并吡咯二酮共聚物的光伏性能的影响

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摘要

A series of low-bandgap alternating copolymers of dithienosilole and thienopyrrolodione (PDTSTPDs) are prepared to investigate the effects of the polymer molecular weight and the alkyl chain length of the thienopyrrole-4,6-dione (TPD) unit on the photovoltaic performance. High-molecular-weight PDTSTPD leads to a higher hole mobility, lower device series resistance, a larger fill factor, and a higher photocurrent in PDTSTPD:[6,6]-phenyl C_(71) butyric acid methyl ester (PC_(71)BM) bulk-heterojunction solar cells. Different side-chain lengths show a significant impact on the interchain packing between polymers and affect the blend film morphology due to different solubilities. A high power conversion efficiency of 7.5% is achieved for a solar cell with a 1.0 cm~2 active area, along with a maximum external quantum efficiency (EQE) of 63% in the red region.
机译：制备了一系列的二噻吩甲硅烷和噻吩并吡咯二酮（PDTSTPDs）的低带隙交替共聚物，以研究噻吩并吡咯-4，6-二酮（TPD）单元的聚合物分子量和烷基链长度对光伏性能的影响。高分子量PDTSTPD在PDTSTPD中导致更高的空穴迁移率，更低的器件串联电阻，更大的填充因子和更高的光电流：[6,6]-苯基C_（71）丁酸甲酯（PC_（71） BM）体异质结太阳能电池。不同的侧链长度显示出对聚合物之间链间堆积的显着影响，并且由于不同的溶解度而影响共混膜的形态。对于具有1.0 cm〜2有源区域的太阳能电池，可实现7.5％的高功率转换效率，而红色区域的最大外部量子效率（EQE）为63％。

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  • 来源
    《Advanced Functional Materials》 |2012年第11期|p.2345-2351|共7页
  • 作者

    Ta-Ya Chu; Jianping Lu; Serge Beaupre; Yanguang Zhang; Jean-Remi Pouliot; Jiayun Zhou; Ahmed Najari; Mario Leclerc; Ye Tao;

  • 作者单位

    Institute for Microstructural Sciences (IMS) National Research Council of Canada (NRC) Ottawa, ON, K1 A 0R6, Canada;

    Institute for Microstructural Sciences (IMS) National Research Council of Canada (NRC) Ottawa, ON, K1 A 0R6, Canada;

    Departement de Chimie University Laval Quebec City, QC, G1V 0A6, Canada;

    Institute for Microstructural Sciences (IMS) National Research Council of Canada (NRC) Ottawa, ON, K1 A 0R6, Canada;

    Departement de Chimie University Laval Quebec City, QC, G1V 0A6, Canada;

    Institute for Microstructural Sciences (IMS) National Research Council of Canada (NRC) Ottawa, ON, K1A 0R6, Canada;

    Departement de Chimie University Laval Quebec City, QC, G1V 0A6, Canada;

    Departement de Chimie University Laval Quebec City, QC, G1V 0A6, Canada;

    Institute for Microstructural Sciences (IMS) National Research Council of Canada (NRC) Ottawa, ON, K1 A 0R6, Canada;

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