The influence of tetrapod-like ZnO morphology and electrolytes on energy conversion efficiency of dye-sensitized solar cells

被引：38

作者：

Lee, Chia-Hua ^{[1
,2
]}

Chiu, Wei-Hao ^{[3
,4
]}

Lee, Kun-Mu ^{[2
,6
]}

Yen, Wen-Hsiang ^{[2
]}

Lin, Hsiu-Fen ^{[5
]}

Hsieh, Wen-Feng ^{[3
,4
]}

Wu, Jenn-Ming ^{[1
]}

机构：

[1] Natl Tsing Hua Univ, Dept Mat Sci & Engn, Hsinchu 300, Taiwan

[2] Ind Technol Res Inst, Green Energy & Environm Res Labs, Hsinchu 310, Taiwan

[3] Natl Chiao Tung Univ, Dept Photon, Hsinchu 300, Taiwan

[4] Natl Chiao Tung Univ, Inst Electroopt Engn, Hsinchu 300, Taiwan

[5] Ind Technol Res Inst, Mat & Chem Res Labs, Hsinchu 310, Taiwan

[6] Providence Univ, Dept Appl Chem, Shalu 433, Taichung Hsien, Taiwan

来源：

ELECTROCHIMICA ACTA | 2010年 / 55卷 / 28期

关键词：

ZnO; Dye sensitized solar cell; EIS; Dc thermal plasma; Electrolyte additive; NANOCRYSTALLINE TIO2 FILMS; IMPEDANCE SPECTROSCOPY; CHARGE-TRANSPORT; BACK-REACTION; PERFORMANCE; RECOMBINATION; PHOTOCURRENT; PARAMETERS; INJECTION; NB2O5;

D O I：

10.1016/j.electacta.2010.07.061

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Tetrapod-like ZnO nanostructures prepared by dc plasma technology were used as photoelectrodes in dye-sensitized solar cells (DSSCs) Each of the tetrapod-like ZnO possesses four extended arms that offer improved electron transport properties Tetrapod-like ZnO with short (S-ZnO) and long arms (L-ZnO) were synthesized by controlling the plasma gas flow and the input power Between these two tetrapod-like ZnO nanopowders the DSSCs using S-ZnO showed higher energy conversion efficiency than using L-ZnO This is due to the resulting increase in dye adsorption and enhanced short-circuit current density using S-ZnO Electrochemical Impedance spectroscopy (EIS) shows that the properties of electron transport of S-ZnO are superior to that of the L-ZnO We investigated the effect of the redox electrolytes (12) and the additives (Lil and TBP) on the performance of the DSSCs by intensity-modulated photovoltage spectroscopy and EIS (C) 2010 Elsevier Ltd All rights reserved

引用

页码：8422 / 8429

页数：8

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