A Silicon‐based Imidazolium Ionic Liquid Iodide Source for Dye‐Sensitized Solar Cells. Issue 3 (28th January 2013)

• Record Type: Journal Article
• Authors: Wu, Wenjun; Zhang, Xiaoyu; Hu, Yue; Jin, Bin; Hua, Jianli
• Is Part Of: Chinese journal of chemistry. Volume 31:Issue 3(2013:Mar.)
• Page Start: 388
• Page End: 392
• Publication Date: 2013-01-28
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1002/cjoc.201201059
• Languages: English
• ISSNs: 1001-604X

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>Room temperature molten salt 1‐methyl‐3‐(trimethylsilyl)methyl‐imidazolium iodide (MSII) was used for iodide sources in dye‐sensitized solar cells with an organic sensitizer 2‐cyano‐3‐[5‐[4‐[3‐[4‐(4‐(<italic>N</italic>, <italic>N</italic>‐bis(4‐methoxyphenyl)amino)phenyl)phenyl]‐2, 5‐di‐<italic>n</italic>‐butyl‐pyrrolo[3, 4‐<italic>c</italic>]pyrrole‐1, 4‐dione]phenyl]furan‐2‐yl] acrylic acid (DPP‐I) as light harvester. With an optimized electrolyte (MSII:I₂:BI:GuNCS24:2:2:0.4, BI and GuCNS are short for benzimidazole and guanidine thiocyanate, respectively), photovoltaic parameters (<italic>J</italic>_sc, <italic>V</italic>_oc, and <italic>ff</italic>) of device are 8.97 mA·cm⁻², 600 mV and 0.61, respectively, yielding a maximum overall photo‐to‐energy conversion ef?ciency (<italic>η</italic>) of 3.23%. And then the charge‐transfer mechanism of devices was deeply analyzed with electrochemical impedance spectroscopy (EIS) in the dark.</p> </abstract>