Synthesis and photovoltaic properties of organic small molecules containing triphenylamine and benzothiadiazole moieties with different terminal groups
Synthesis and photovoltaic properties of organic small molecules containing triphenylamine and benzothiadiazole moieties with different terminal groups
复制标题
不同端基三苯胺和苯并噻二唑有机小分子的合成及光伏性能
DOI:
10.1016/j.dyepig.2013.03.011
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发表时间:
2013-09
影响因子:
4.5
通讯作者:
Tan, Songting
中科院分区:
文献类型:
--
作者:
Liu, Xunshan;Li, Haohao;Shen, Tianpei;Tan, Songting
Three new organic small molecules (TPA-DTBT, TPA-DTBT-TH and TPA-DTBT-CAO) containing triphenylamine (TPA) and 4,7-bis(thiophen-2-yl)benzo[1,2,5]thiadiazole (DTBT) moieties with different terminal groups were designed and synthesized. Their thermal, photophysical, electrochemical and photovoltaic properties were investigated. The introduction of 2-ethylhexyl cyanoacetate and 2-tetradecyl thiophene as terminal groups extended molecular π-conjugation length and broadened the absorption spectra. Three small molecules exhibit good solubility in common organic solvents, good film-forming ability, and thermal stability. Bulk heterojunction (BHJ) solar cells based on the blend of small molecule TPA-DTBT and PC61BM showed a power conversion efficiency (η) of 1.85%.
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