Phenothiazinedioxide-Conjugated Sensitizers and a Dual-TEMPO/Iodide Redox Mediator for Dye-Sensitized Solar Cells

被引：12

作者：

Lin, Ryan Yeh-Yung ^{[1
,2
]}

Chu, Te-Chun ^{[2
]}

Chen, Ping-Wei ^{[2
]}

Ni, Jen-Shyang ^{[1
]}

Shih, Pei-Chieh ^{[2
]}

Chen, Yung-Chung ^{[1
]}

Ho, Kuo-Chuan ^{[2
,3
]}

Lin, Jiann T. ^{[1
]}

机构：

[1] Acad Sinica, Inst Chem, Taipei 11529, Taiwan

[2] Natl Taiwan Univ, Dept Chem Engn, Taipei 10617, Taiwan

[3] Natl Taiwan Univ, Inst Polymer Sci & Engn, Taipei 10617, Taiwan

来源：

CHEMSUSCHEM | 2014年 / 7卷 / 08期

关键词：

energy conversion; ionic liquids; metal-free; sensitizers; solar cells; ORGANIC-DYES; NITROXIDE RADICALS; EXCITED-STATES; COUMARIN DYES; EFFICIENT; ELECTROLYTE; COUPLES; BENZOTHIADIAZOLE; SHUTTLES; PROGRESS;

D O I：

10.1002/cssc.201402160

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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-/I-3(-) 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-center dot) and iodide was successfully synthesized and applied to the DSSCs. If the I-/I-3(-) 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 %.

引用

页码：2221 / 2229

页数：9

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