Porphyrin Dyes with High Injection and Low Recombination for Highly Efficient Mesoscopic Dye-Sensitized Solar Cells

被引：75

作者：

Barea, Eva M. ^{[1
]}

Gonzalez-Pedro, Victoria ^{[1
]}

Ripolles-Sanchis, Teresa ^{[1
]}

Wu, Hui-Ping ^{[2
,3
]}

Li, Lu-Lin ^{[2
,3
]}

Yeh, Chen-Yu ^{[4
]}

Diau, Eric Wei-Guang ^{[2
,3
]}

Bisquert, Juan ^{[1
]}

机构：

[1] Univ Jaume 1, Dept Phys, Photovolta & Optoelect Devices Grp, Castellon de La Plana 12071, Spain

[2] Natl Chiao Tung Univ, Dept Appl Chem, Hsinchu 300, Taiwan

[3] Natl Chiao Tung Univ, Inst Mol Sci, Hsinchu 300, Taiwan

[4] Natl Chung Hsing Univ, Dept Chem, Taichung 402, Taiwan

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2011年 / 115卷 / 21期

关键词：

ORGANIC SENSITIZERS; IMPEDANCE; THIOPHENE; DESIGN;

D O I：

10.1021/jp2018378

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The photovoltaic performance and charge recombination characteristics of porphyrin-based dye-sensitized solar cell (DSC) devices have been investigated using the impedance spectroscopy (IS) technique. The IS results provide key information related to the device performance for a highly efficient porphyrin dye (YD2), a reference porphyrin dye (YD0), and a commercial ruthenium dye (N719). The DSC devices constructed using YD2 and N719 dyes reach similar internal power conversion efficiencies (7.41% vs 7.54%) due to the higher injection of the YD2 dye that is compromised by a lower photovoltage. In addition, both YD2 and N719 dyes exhibit the same charge-transfer resistance, indicating that the recombination rates of both dyes are very similar. The diarylamino group plays a key role to repel the triiodide ions from the titania surface so that the charge recombination of YD2 is less significant compared with that of YD0.

引用

页码：10898 / 10902

页数：5

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