Fabrication and characterization of ZnO/TiOx nanoscale heterojunctions

被引:6
作者
Hsu, Y. F.
Djurisic, A. B.
Tam, K. H.
Cheung, K. Y.
Chan, W. K.
机构
[1] Univ Hong Kong, Dept Phys, Hong Kong, Hong Kong, Peoples R China
[2] Univ Hong Kong, Dept Chem, Hong Kong, Hong Kong, Peoples R China
关键词
nanomaterials; oxides;
D O I
10.1016/j.jcrysgro.2007.07.010
中图分类号
O7 [晶体学];
学科分类号
0702 ; 070205 ; 0703 ; 080501 ;
摘要
ZnO nanorods have been grown by a hydrothermal method on titania/titanate nanowires. The resulting branched structures were studied by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD) and photoluminescence (PL) measurements. The influence of seeding on the nanorod growth was investigated, and the large-scale synthesis of branched ZnO/TiOx heterostructures has been demonstrated. The ZnO nanorods grow along [0001] direction and emit UV and visible (yellow-green) luminescence, as expected for samples grown by a hydrothermal method. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码:348 / 352
页数:5
相关论文
共 25 条
[1]   Heterostructures of ZnO nanorods with various one-dimensional nanostructures [J].
Bae, SY ;
Seo, HW ;
Choi, HC ;
Park, J ;
Park, J .
JOURNAL OF PHYSICAL CHEMISTRY B, 2004, 108 (33) :12318-12326
[2]   Dye-sensitized solar cells based on semiconductor morphologies with ZnO nanowires [J].
Baxter, JB ;
Aydil, ES .
SOLAR ENERGY MATERIALS AND SOLAR CELLS, 2006, 90 (05) :607-622
[3]   Long K-doped titania and titanate nanowires on Ti foil and fluorine-doped tin oxide/quartz substrates for solar-cell applications [J].
Cheung, Kai Yin ;
Yip, Cho Tung ;
Djurisic, Aleksandra B. ;
Leung, Yu Hang ;
Chan, Wai Kin .
ADVANCED FUNCTIONAL MATERIALS, 2007, 17 (04) :555-562
[4]   Synthesis of branched 'nanotrees' by controlled seeding of multiple branching events [J].
Dick, KA ;
Deppert, K ;
Larsson, MW ;
Mårtensson, T ;
Seifert, W ;
Wallenberg, LR ;
Samuelson, L .
NATURE MATERIALS, 2004, 3 (06) :380-384
[5]   Optical properties of ZnO nanostructures [J].
Djurisic, Aleksandra B. ;
Leung, Yu Hang .
SMALL, 2006, 2 (8-9) :944-961
[6]   General route to vertical ZnO nanowire arrays using textured ZnO seeds [J].
Greene, LE ;
Law, M ;
Tan, DH ;
Montano, M ;
Goldberger, J ;
Somorjai, G ;
Yang, PD .
NANO LETTERS, 2005, 5 (07) :1231-1236
[7]   Low-temperature wafer-scale production of ZnO nanowire arrays [J].
Greene, LE ;
Law, M ;
Goldberger, J ;
Kim, F ;
Johnson, JC ;
Zhang, YF ;
Saykally, RJ ;
Yang, PD .
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2003, 42 (26) :3031-3034
[8]   Zinc oxide nanowires on carbon nanotubes [J].
Kim, H ;
Sigmund, W .
APPLIED PHYSICS LETTERS, 2002, 81 (11) :2085-2087
[9]   Chemical bonding character and physicochemical properties of mesoporous zinc oxide-layered titanate nanocomposites [J].
Kim, Tae Woo ;
Hwang, Seong-Ju ;
Park, Yiseul ;
Choi, Wonyong ;
Choy, Jin-Ho .
JOURNAL OF PHYSICAL CHEMISTRY C, 2007, 111 (04) :1658-1664
[10]   Nanowire dye-sensitized solar cells [J].
Law, M ;
Greene, LE ;
Johnson, JC ;
Saykally, R ;
Yang, PD .
NATURE MATERIALS, 2005, 4 (06) :455-459