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OALib Journal期刊
ISSN: 2333-9721
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添加剂dmi对pcpdtbt:pc61bm聚合物薄膜性能的影响
Keywords: 有机高分子材料,光电性能,成膜添加剂,光敏层
Abstract:
？制备ito/pedot:pss/pcpdtbt:pc61bm聚合物薄膜,研究了成膜添加剂dmi对ito/pedot:pss/pcpdtbt:pcbm/al的聚合物薄膜性能的影响。结果表明,成膜添加剂dmi使pcpdtbt:pcbm光敏层的吸收峰红移,所制备出的太阳能电池的性能得到大幅度提高。dmi使薄膜中产生纳米尺度的两相分离,增大了给体与受体间的界面接触,提高了光生激子的分离效率,增大了电子的迁移率和电极收集载流子的效率,从而提高了器件的性能。在强度为100mw·cm-2的光照下,太阳能电池的填充因子ff为0.38,能量转换效率η为2.64\%,开路电压voc为0.66v,短路电流密度jsc为10.42ma·cm-2。
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