TiO2 nanotubes decorated with ZnO rod-like nanostructures for efficient dye-sensitized solar cells

被引：20

作者：

Kim, Seok-Soon ^{[1
]}

Na, Seok-In ^{[2
]}

Nah, Yoon-Chae ^{[3
]}

机构：

[1] Kunsan Natl Univ, Dept Nano & Chem Engn, Kunsan 753701, Jeollabuk Do, South Korea

[2] Korea Inst Sci & Technol, Wanju Gun 565902, Jeollabuk Do, South Korea

[3] Korea Univ Technol & Educ, Sch Energy Mat Chem Engn, Chungnam 330708, South Korea

来源：

ELECTROCHIMICA ACTA | 2011年 / 58卷

基金：

新加坡国家研究基金会;

关键词：

Dye-sensitized solar cells; TiO2; nanotubes; Anodization; ZnO rod-like nanostructure; Hydrothermal synthesis; NANOPOROUS ELECTRODES; PERFORMANCE; NANORODS; GROWTH; NANOPARTICLES; NANOWIRES; ARRAYS;

D O I：

10.1016/j.electacta.2011.09.076

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

To increase the efficiency of TiO2 nanotube-based dye-sensitized solar cells, we fabricated TiO2 nanotubes and decorated them with ZnO rod-like nanostructures via anodization of Ti metal sheets followed by the hydrothermal growth of ZnO. Compared to conventionally anodized nanotubes, the modified nanotubes provided a higher specific surface area for dye adsorption. Besides increased dye adsorption, suppression of the recombination of photo-induced electrons at the electrode/electrolyte interface was observed in the modified nanotube-based systems because of the existence of a ZnO thin layer on the surface of nanotubes. This thin layer was applied as a seed for an oriented growth of ZnO. Dye-sensitized solar cells based on TiO2 nanotubes decorated with ZnO rod-like nanostructures showed a higher power conversion efficiency of 3.84%, compared to standard nanotube devices with an efficiency of 2.06%. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：503 / 509

页数：7

共 30 条

[1] Highly efficient dye-sensitized solar cells with a titania thin-film electrode composed of a network structure of single-crystal-like TiO2 nanowires made by the "oriented attachment" mechanism [J].

Adachi, M ;

Murata, Y ;

Takao, J ;

Jiu, JT ;

Sakamoto, M ;

Wang, FM .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2004, 126 (45) :14943-14949

[2] Preparation of Nb2O5 coated TiO2 nanoporous electrodes and their application in dye-sensitized solar cells [J].

Chen, SG ;

Chappel, S ;

Diamant, Y ;

Zaban, A .

CHEMISTRY OF MATERIALS, 2001, 13 (12) :4629-4634

[3] Core-shell nanoporous electrode for dye sensitized solar cells: the effect of shell characteristics on the electronic properties of the electrode [J].

Diamant, Y ;

Chappel, S ;

Chen, SG ;

Melamed, O ;

Zaban, A .

COORDINATION CHEMISTRY REVIEWS, 2004, 248 (13-14) :1271-1276

[4] Nanorod-based dye-sensitized solar cells with improved charge collection efficiency [J].

Kang, Soon Hyung ;

Choi, Sang-Hyun ;

Kang, Moon-Sung ;

Kim, Jae-Yup ;

Kim, Hyun-Sik ;

Hyeon, Taeghwan ;

Sung, Yung-Eun .

ADVANCED MATERIALS, 2008, 20 (01) :54-+

[5] Surface modification of stretched TiO2 nanotubes for solid-state dye-sensitized solar cells [J].

Kang, Soon Hyung ;

Kim, Jae-Yup ;

Kim, Yukyeong ;

Kim, Hyun Sik ;

Sung, Yung-Eun .

JOURNAL OF PHYSICAL CHEMISTRY C, 2007, 111 (26) :9614-9623

[6] An investigation on electron behavior employing vertically-aligned TiO2 nanotube electrodes for dye-sensitized solar cells [J].

Kang, Soon Hyung ;

Kim, Hyun Sik ;

Kim, Jae-Yup ;

Sung, Yung-Eun .

NANOTECHNOLOGY, 2009, 20 (35)

[7] Dye-sensitized core-shell nanocrystals:: Improved efficiency of mesoporous tin oxide electrodes coated with a thin layer of an insulating oxide [J].

Kay, A ;

Grätzel, M .

CHEMISTRY OF MATERIALS, 2002, 14 (07) :2930-2935

[8] Bamboo-Type TiO2 Nanotubes: Improved Conversion Efficiency in Dye-Sensitized Solar Cells [J].

Kim, Doohun ;

Ghicov, Andrei ;

Albu, Sergiu P. ;

Schmuki, Patrik .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2008, 130 (49) :16454-+

[9] TiO2 Nanotube arrays: Elimination of disordered top layers ("nanograss") for improved photoconversion efficiency in dye-sensitized solar cells [J].

Kim, Doohun ;

Ghicov, Andrei ;

Schmuki, Patrik .

ELECTROCHEMISTRY COMMUNICATIONS, 2008, 10 (12) :1835-1838

[10] Enhancement in the performance of dye-sensitized solar cells containing ZnO-covered TiO2 electrodes prepared by thermal chemical vapor deposition [J].

Kim, Ki Eun ;

Jang, Song-Rim ;

Park, Jeunghee ;

Vittal, R. ;

Kim, Kang-Jin .

SOLAR ENERGY MATERIALS AND SOLAR CELLS, 2007, 91 (04) :366-370

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