a Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, China
J. Mater. Chem. A 2013, 1, 8759-8765.
The imidazolium functionalized stable organic radical 2,2,6,6-tetramethyl-piperidine-1-oxyl (TEMPO), and 1-methyl-3-(2-oxo-2-(2,2,6,6-tetramethyl-1-oxyl-4-piperidoxyl) butyl)imidazolium bis(trifluoromethanesulfonyl) imide ([MeIm-TEMPO][TFSI]), were synthesized and characterized. The prepared [MeIm-TEMPO][TFSI]/1-propyl-3-methylimidazolium iodide (PMII) hybrid redox couple showed negligible absorption in the visible region and higher redox potential as compared with the iodide/triiodide (I−/I3−) redox couple. The resulting dye-sensitized solar cells (DSSCs) containing the imidazolium functionalized TEMPO/PMII hybrid redox couple in combination with organic dye (D205) exhibited average overall power conversion efficiencies of 8.2% and 9.1% under simulated air mass 1.5 solar spectrum illumination at 100 mW cm−2 and 50 mW cm−2, respectively, which are higher than that of the traditional PMII/I2 based electrolyte, probably due to the enhancement of the Voc and Jsc values of the hybrid electrolytes.
链接： //pubs.rsc.org/en/Content/ArticleLanding/2013/TA/C3TA11521F#!divAbstract
