Phenothiazinedioxide‐Conjugated Sensitizers and a Dual‐TEMPO/Iodide Redox Mediator for Dye‐Sensitized Solar Cells. Issue 8 (8th July 2014)

• Record Type: Journal Article
• Authors: Lin, Ryan Yeh‐Yung; Chu, Te‐Chun; Chen, Ping‐Wei; Ni, Jen‐Shyang; Shih, Pei‐Chieh; Chen, Yung‐Chung; Ho, Kuo‐Chuan; Lin, Jiann T.
• Is Part Of: ChemSusChem. Volume 7:Issue 8(2014:Aug.)
• Page Start: 2221
• Page End: 2229
• Publication Date: 2014-07-08
• Subjects: Green chemistry -- Periodicals; Sustainable engineering -- Periodicals; Chemistry -- Periodicals; Chemical engineering -- Periodicals; 660
• DOI: 10.1002/cssc.201402160
• Languages: English
• ISSNs: 1864-5631

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>Metal‐free dyes containing a phenothiazinedioxide entity in the spacer were synthesized. The best conversion efficiency (7.47 %) of the dye‐sensitized solar cell (DSSC) by using new sensitizers with chenodeoxycholic acid as a co‐adsorbent and the I⁻/I₃⁻ electrolyte reached over 90 % of that of the standard N719‐based cell (8.10 %). A new type of ionic liquid containing the nitroxide radical (NO^.) and iodide was successfully synthesized and applied to the DSSCs. If the I⁻/I₃⁻ electrolyte was replaced with a dual redox electrolyte, that is, a TEMPO (2, 2, 6, 6‐tetramethylpiperidin‐1‐oxyl) derivative with a dangling imidazolium iodide entity, the cell exhibited a high open‐circuit voltage of 0.85 V and a cell efficiency of 8.36 %.</p> </abstract>