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首页> 外文期刊>Thin Solid Films >Amorphous Molecular Material Containing Bisthiophenyl-benzothiadiazoleand Triphenylamine With Bipolar And Low-bandgap characteristics For Solar Cells
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Amorphous Molecular Material Containing Bisthiophenyl-benzothiadiazoleand Triphenylamine With Bipolar And Low-bandgap characteristics For Solar Cells

机译：具有双极低带隙特性的双硫苯基-苯并噻二唑和三苯胺的非晶态分子材料

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摘要

A D-π-A-π-D compound 4,7-bis{5'-[4",4"-N, N-diphenylamino-styryl]thiophen-2'-yl}benzo[1,2,5-thiadiazole] (TPA-BTD-TPA) with triphenylamine (TPA) as electron-donor and benzothiadiazole (BTD) as electron-acceptor and linked via vinyl unit was synthesized and characterized. A stable intramolecular charge-transfer state enabled the molecule to expand the optical absorption band and prevented the occurrence of electron back-donation. Excellent film-forming property made it easy prepare homogeneous film using a spin-coating technique. Suitable energy levels were beneficial for the improvement of photovoltaic device performance. Photovoltaic cell based on TPA-BTD-TPA/[6,6]-phenyl C_(61)-butyric acid methyl ester as a active layer was fabricated, and the optical conversion efficiency was 0.26% under the illumination of AM 1.5 (85 mW/cm~2).
机译：D-π-A-π-D化合物4,7-双{5'-[4“，4” -N，N-二苯氨基-苯乙烯基]噻吩-2'-基}苯并[1,2,5-合成并表征了以三苯胺（TPA）为电子给体和苯并噻二唑（BTD）为电子受体并通过乙烯基单元连接的噻二唑]（TPA-BTD-TPA）。稳定的分子内电荷转移状态使分子能够扩展光吸收带并防止电子回赠的发生。优异的成膜性使其易于使用旋涂技术制备均质膜。合适的能量水平有利于光伏器件性能的改善。制备了以TPA-BTD-TPA / [6,6]-苯基C_（61）-丁酸甲酯为活性层的光伏电池，在AM 1.5（85 mW）的光照下，光转换效率为0.26％ / cm〜2）。

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