Enhanced performance of a flexible dye-sensitized solar cell with a composite semiconductor film of ZnO nanorods and ZnO nanoparticles

被引：63

作者：

Lin, Lu-Yin ^{[1
]}

Yeh, Min-Hsin ^{[1
]}

Lee, Chuan-Pei ^{[1
]}

Chou, Chen-Yu ^{[1
]}

Vittal, R. ^{[1
]}

Ho, Kuo-Chuan ^{[1
,2
]}

机构：

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

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

来源：

ELECTROCHIMICA ACTA | 2012年 / 62卷

关键词：

Back illumination; Dye-sensitized solar cells; Laser-induced photo-voltage transients; Ti foil; Zinc oxide nanorods; BICOMPONENT WO3/TIO2 FILMS; ELECTRON-TRANSPORT; EQUIVALENT-CIRCUIT; CHARGE-COLLECTION; NANOWIRE ARRAYS; RECOMBINATION; EFFICIENCY; FABRICATION; SUBSTRATE; ROUTE;

D O I：

10.1016/j.electacta.2011.12.036

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A composite thin film of only 6 mu m, consisting of a first layer of ZnO nanorods (ZNRs) and a second layer of ZnO nanoparticles (ZNPs), was deposited on a flexible Ti foil. The structures and morphologies of the films of ZNRs, ZNPs, and their composite (hereafter ZNRs/ZNPs) were studied by X-ray diffraction (XRD) patterns, scanning electron microscopic (SEM) and transmission electron microscopy (TEM) images. The Ti foil with the composite film was used as the photoanode of a flexible dye-sensitized solar cell (DSSC); an indium doped tin oxide/polyethylene naphthalate (ITO/PEN) substrate with a thin layer of platinum was used as the counter electrode. A power conversion efficiency (eta) of 2.19% was achieved for the DSSC with ZNRs/ZNPs, through back-illumination, which is higher than that of the cell with only ZNPs (1.80%); the DSSC with bare ZNRs showed a very poor efficiency of 0.90%. Explanations are substantiated by electrochemical impedance spectra (EIS), laser-induced photo-voltage transients, and incident photon-to-electron conversion efficiency (IPCE) curves. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：341 / 347

页数：7

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