Dye‐Sensitized Solar Cells Based on Functionally Separated D‐π‐A Dyes with 2‐Cyanopyridine as an Electron‐Accepting and Anchoring Group. Issue 2 (18th October 2013)

• Record Type: Journal Article
• Authors: Mao, Jiangyi; Wang, Dan; Liu, Shih‐Hung; Hang, Yandi; Xu, Yaoyao; Zhang, Qiong; Wu, Wenjun; Chou, Pi‐Tai; Hua, Jianli
• Is Part Of: Asian journal of organic chemistry. Volume 3:Issue 2(2014:Feb.)
• Page Start: 153
• Page End: 160
• Publication Date: 2013-10-18
• Subjects: Chemistry, Organic -- Periodicals; Organic compounds -- Synthesis -- Periodicals; 547.005
• DOI: 10.1002/ajoc.201300178
• Languages: English
• ISSNs: 2193-5807

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>Three functionally separated donor‐π‐acceptor (<sc>D</sc>‐π‐A) sensitizers <bold>CP</bold>‐<bold>I</bold>–<bold>III</bold> with a cyano group as the electron‐accepting group and a pyridine as the anchoring group have been developed for dye‐sensitized solar cells (DSSCs). Significantly, the <italic>J</italic>_sc of <bold>CP</bold>‐<bold>II</bold>, which contains a benzo[1, 2, 5]thiadiazole moiety, is much higher than those of <bold>CP</bold>‐<bold>I</bold> and <bold>CP</bold>‐<bold>III</bold>, which contain quinoxaline and [1, 2, 5]thiadiazolo[3, 4‐<italic>c</italic>]pyridine groups, respectively. This is not only a result of the good photon absorption, but also effective intramolecular charge transfer. The conversion efficiency (<italic>η</italic>) for <bold>CP</bold>‐<bold>II</bold>‐based DSSCs is 4.02 %, which is far better than that of <bold>CP</bold>‐<bold>I</bold> and <bold>CP</bold>‐<bold>III</bold>. Also, the <italic>η</italic> value for <bold>CP</bold>‐<bold>II</bold> is much higher than that for the reference dye <bold>P</bold>‐<bold>II</bold> with pyridine as anchoring group.</p> </abstract>