210880-91-4Relevant academic research and scientific papers
Photovoltaic Devices Prepared through a Trihydroxy Substitution Strategy on an Unsymmetrical Squaraine Dye
Wu, Jianglin,Si, Changfeng,Chen, Yao,Yang, Lin,Hu, Bin,Chen, Guo,Lu, Zhiyun,Huang, Yan
supporting information, p. 3234 - 3240 (2018/02/06)
A series of unsymmetrical arene-1,3-squaraine (USQ) derivatives with two, three, or four hydroxy (?OH) substituents, namely, USQ-2-OH, USQ-3-OH, or USQ-4-OH, respectively, were designed and synthesized, and the effect of the number of hydroxy groups on the optoelectronic properties of USQs were investigated. Despite the three compounds having similar UV/Vis absorption and HOMO energy levels, solution-processed bulk-heterojunction (BHJ) small-molecule organic solar cells with USQ-3-OH as electron-donor materials exhibit the highest power conversion efficiency of 6.07 %, which could be mainly attributed to the higher hole mobility and smaller phase separation. It is also noteworthy that the short-circuit current (Jsc) of the USQ-3-OH-based device is as high as 14.95 mA cm?2, which is the highest Jsc values reported for squaraine-based BHJ solar cells to date. The results also indicate that more ?OH substituents on squaraine dyes do not necessarily lead to better photovoltaic performance.
Search for squaraine derivatives that can be sublimed without thermal decomposition
Tian, Minquan,Furuki, Makoto,Iwasa, Izumi,Sato, Yasuhiro,Pu, Lyong Sun,Tatsuura, Satoshi
, p. 4370 - 4376 (2007/10/03)
To search for sublimable squaraine (SQ) dyes for fabricating thin films under vacuum, we have synthesized a series of 2,4-bis[4-(N,N-dialkylamino)-2,6-dihydroxyphenyl]squaraines [SQ(OH)4] and studied their properties. The investigation of the b
