Effect of Au nano-particles on TiO2 nanorod electrode in dye-sensitized solar cells

被引：38

作者：

Ghaffari, M. ^{[1
,2
]}

Cosar, M. Burak ^{[3
,4
]}

Yavuz, Halil I. ^{[3
,4
]}

Ozenbas, M. ^{[3
,4
]}

Okyay, Ali K. ^{[1
,2
]}

机构：

[1] Bilkent Univ, Inst Mat Sci & Nanotechnol, UNAM, TR-06800 Ankara, Turkey

[2] Bilkent Univ, Dept Elect & Elect Engn, TR-06800 Ankara, Turkey

[3] Middle E Tech Univ, Dept Met & Mat Engn, TR-06800 Ankara, Turkey

[4] Middle E Tech Univ, Ctr Solar Energy Res & Applicat GUNAM, TR-06800 Ankara, Turkey

来源：

ELECTROCHIMICA ACTA | 2012年 / 76卷

关键词：

Dye-sensitized solar cell; Hydrothermal; TiO2; nanorods; Photoreduction; X-RAY; RUTILE; ARRAYS; CORE; SIZE; ANATASE; SENSOR; XPS; EFFICIENCY; CONVERSION;

D O I：

10.1016/j.electacta.2012.05.058

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Au nano particles (NPs) were deposited on vertically grown TiO2 nanorod arrays on FTO substrate by hydrothermal process. Metal nanoparticles were loaded onto the surface of TiO2 nanorods via photochemical reduction process under ultraviolet irradiation. X-ray diffraction (XRD), electron microscopy (FESEM), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS) analysis were used to characterize the as-prepared Au/TiO2 nanorod composites. Current density-voltage (I-V) measurements were obtained from a two-electrode sandwich type cell. The presence of Au nanoparticles can help the electron-hole separation by attracting photoelectrons. Addition of Au nanoparticles to the TiO2 nanorod significantly increased the fill factor and J(SC) (short circuit current density). The application of Au NPs TiO2 nanorods in improving the performance of DSSCs is promising. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：446 / 452

页数：7

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