Effect of Titanium Substrate Morphology on the Growth of TiO2 Nanotubes and Their Photovoltaic Performance in Dye-Sensitized Solar Cells

被引：16

作者：

Dubey, Mukul ^{[1
]}

He, Hongshan ^{[1
]}

机构：

[1] S Dakota State Univ, Dept Elect Engn, Ctr Adv Photovolta, Brookings, SD 57007 USA

来源：

NANOSCIENCE AND NANOTECHNOLOGY LETTERS | 2012年 / 4卷 / 05期

基金：

美国国家科学基金会;

关键词：

Titanium Dioxide; Nanotubes; Morphology; Solar Cells; ARRAYS; TRANSPORT;

D O I：

10.1166/nnl.2012.1350

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Morphology of titanium substrate exhibited significant impact on the growth of titanium dioxide nanotubes (TiO2 NTs) and their photovoltaic performance in dye-sensitized solar cells. Scanning electron microscopy studies showed that the surface of as-purchased Ti foil had numerous cracks ranging from dozens of nanometers up to 5 mu m in width leading to the formation of TiO2 NT bundles after anodization. A short time etching of titanium substrate in 0.75 M HF aqueous solution removed the cracks and generated localized flat surface, which led to the growth of TiO2 NTs in different directions. Long time anodization of those etched substrate resulted in highly ordered, bundle-free TiO2 NTs, which exhibited 60% increase of power conversion efficiency in dye-sensitized solar cells.

引用

页码：548 / 552

页数：5

共 26 条

[1] Fabrication of complete titania nanoporous structures via electrochemical anodization of Ti [J].

Ali, Ghafar ;

Chen, Chong ;

Yoo, Seung Hwa ;

Kum, Jong Min ;

Cho, Sung Oh .

NANOSCALE RESEARCH LETTERS, 2011, 6

[2]

Barbe CJ, 1997, J AM CERAM SOC, V80, P3157, DOI 10.1111/j.1151-2916.1997.tb03245.x

[3] The trap-limited diffusivity of electrons in nanoporous semiconductor networks permeated with a conductive phase [J].

Bisquert, J ;

Zaban, A .

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 2003, 77 (3-4) :507-514

[4] Nature of photovoltaic action in dye-sensitized solar cells [J].

Cahen, D ;

Hodes, G ;

Grätzel, M ;

Guillemoles, JF ;

Riess, I .

JOURNAL OF PHYSICAL CHEMISTRY B, 2000, 104 (09) :2053-2059

[5] Morphology and Microstructure of As-Synthesized Anodic TiO2 Nanotube Arrays [J].

Cao, Chunbin ;

Zhang, Guoshun ;

Song, Xueping ;

Sun, Zhaoqi .

NANOSCALE RESEARCH LETTERS, 2011, 6 :1-5

[6] Faceting of high-angle grain boundaries in titanium-excess BaTiO3 [J].

Cho, YK ;

Yoon, DY .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2004, 87 (03) :438-442

[7] Tailoring TiO2 nanotube growth during anodic oxidation by crystallographic orientation of Ti [J].

Crawford, G. A. ;

Chawla, N. .

SCRIPTA MATERIALIA, 2009, 60 (10) :874-877

[8] TiO2 nanotube membranes on transparent conducting glass for high efficiency dye-sensitized solar cells [J].

Dubey, Mukul ;

Shrestha, Maheshwar ;

Zhong, Yihan ;

Galipeau, David ;

He, Hongshan .

NANOTECHNOLOGY, 2011, 22 (28)

[9] Self-ordering electrochemistry: a review on growth and functionality of TiO2 nanotubes and other self-aligned MOx structures [J].

Ghicov, Andrei ;

Schmuki, Patrik .

CHEMICAL COMMUNICATIONS, 2009, (20) :2791-2808

[10] Dye-sensitized solar cells [J].

Grätzel, M .

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C-PHOTOCHEMISTRY REVIEWS, 2003, 4 (02) :145-153

← 1 2 3 →