کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1257207 | 971551 | 2015 | 8 صفحه PDF | دانلود رایگان |
Three new metal-free organic dyes (TX1, TX2 and TX3) based on truxene core structure, with triphenylamine as the electron donor, thiophene as the π spacers, and cyanoacetic acid or rhodanine-3-acetic acid as the electron acceptor are designed and synthesized. Their UV–vis absorption spectra, electrochemical and photovoltaic properties were investigated. The cyanoacrylic acid is verified to be a better acceptor unit (meanwhile the anchoring group) compared to the rhodanine-3-acetic acid. And also, two anchoring groups in TX2 could provide stronger adsorption ability on the TiO2 surface. In addition, the EIS results indicate a slower charge recombination processes for TX2. As a result, dye TX2 bearing two cyanoacetic acid outperforms the other two dyes, exhibiting the photo-conversion efficiency of 2.64%, with Jsc = 5.09 mA cm–2, Voc = 729 mV, FF = 71.1.
Three new truxene based organic dyes (named TX1, TX2 and TX3) are synthesized and their photovoltaic properties were investigated. Dye TX2 bearing two cyanoacetic acid parts exhibited the highest photo-conversion efficiency of 2.64%.Figure optionsDownload as PowerPoint slide
Journal: Chinese Chemical Letters - Volume 26, Issue 8, August 2015, Pages 955–962