کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
175810 | 458922 | 2015 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Solution-processable thienoisoindigo-based molecular donors for organic solar cells with high open-circuit voltage Solution-processable thienoisoindigo-based molecular donors for organic solar cells with high open-circuit voltage](/preview/png/175810.png)
Two acetylene-bridged Donor–Acceptor–Donor (D-A-D) type small pi-conjugated molecules involving triphenylamine or N-phenylcarbazole as donor blocks (D) and thienoisoindigo as the acceptor unit (A) were synthesized and characterized by UV–Vis absorption and cyclic voltammetry. These donor materials were mixed with [6,6]-phenyl-C61-butyric acid methyl ester to prepare bulk heterojunction solar cells by simple solution processing. Due to their low-lying highest occupied molecular orbital energy levels, high open-circuit voltages up to 0.99 V were measured. The triphenylamine end-capped derivative led to the best power conversion efficiency of ca 2.20%, which ranks among the highest reported value for thienoisoindigo-based materials.
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Journal: Dyes and Pigments - Volume 115, April 2015, Pages 17–22