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首页> 外文期刊>Current applied physics: the official journal of the Korean Physical Society >Morphological engineering via processing additive in thin film bulk-heterojunction photovoltaic cells: A systematic understanding of crystal size and charge transport
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Morphological engineering via processing additive in thin film bulk-heterojunction photovoltaic cells: A systematic understanding of crystal size and charge transport

机译：通过加工添加剂在薄膜散装 - 异质结光伏电池中的形态学工程：对晶体尺寸和电荷运输的系统理解

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In this research, organic photovoltaic devices based on bulk-heterojunction (BHJ) from Poly(3-hexylthiophene-2,5-diyl) (P3HT)/[6,6]-phenyl C-71 butyric acid methyl ester (PC71BM) were successfully fabricated to determine the optimization of solvent additive of 1,8-diiodooctane (DIO). The BHJ devices with DIO show improved short circuit current (J(SC)) correlated to the improved device performance, since the DIO in P3HT: PC71BM BHJ affects the morphology in terms of the surface roughness and crystal size. Furthermore, the DIO contributes to the enhanced charge carrier transport of the BHJ device, because the decreased fluorescence and increased hole mobility as found through Raman spectra analysis and SCLC measurement, respectively. The device with optimized concentration (1 vol %) of DIO accomplishes 5% improved photovoltaic performance due to the favorable structural property and enhanced carrier mobility. (C) 2016 Elsevier B.V. All rights reserved.
机译：在该研究中，基于聚（3-己基噻吩-2,5-二基）（P3HT）/ [6,6] - 苯基C-71丁酸甲酯（PC71BM）的基于聚体 - 异质结（BHJ）的有机光伏器件 成功制造以确定1,8-二碘辛烷（DIO）的溶剂添加剂的优化。 具有DIO的BHJ设备显示出与改进的设备性能相关的改进的短路电流（J（SC）），因为P3HT中的DIO：PC71BM BHJ在表面粗糙度和晶体尺寸方面影响了形态。 此外，DIO有助于BHJ器件的增强电荷载流子传输，因为通过拉曼光谱分析和SCLC测量的荧光降低和增加的空穴迁移率。 由于结构性质有利和增强的载流动性，具有优化浓度（1 Vol％）DIO的装置改善了5％的光伏性能。 （c）2016年Elsevier B.v.保留所有权利。

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