Growth mechanism and characterization of ZnO microbelts and self-assembled

被引：58

作者：

Chen, YQ ^{[1
]}

Jiang, J ^{[1
]}

He, ZY ^{[1
]}

Su, Y ^{[1
]}

Cai, D ^{[1
]}

Chen, L ^{[1
]}

机构：

[1] Hefei Univ Technol, Sch Mat Sci & Engn, Hefei 230009, Anhui, Peoples R China

来源：

MATERIALS LETTERS | 2005年 / 59卷 / 26期

关键词：

microcombs; vapor-solid process; faceted epitaxial growth; entatiomorphous twin-microcombs; green emission;

D O I：

10.1016/j.matlet.2005.05.059

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report the structural characterization and growth mechanism of ZnO microbelts and microcombs synthesized by direct thermal evaporation and post-oxidation of the pure Zn powders. The synthesized ZnO products are hexagonal wurtzite structured and in the range of micrometer size. The formation of the microcombs follows a two-step process: the comb-stems are formed by a fast vapor-solid (VS) growth along [11 (2) over bar0] direction, and the comb-teeth are grown by a subsequent faceted epitaxial growth parallel to the (0001) polar surface. A novel structure of enantiomorphous twin-microcombs is also detected in the synthesized products. Photoluminescence (PL) spectrum shows that the prepared products are green emission, centered at about 507 nm. (C) 2005 Elsevier B.V. All rights reserved.

引用

页码：3280 / 3283

页数：4

共 21 条

[1] Field-effect transistors based on single semiconducting oxide nanobelts [J].

Arnold, MS ;

Avouris, P ;

Pan, ZW ;

Wang, ZL .

JOURNAL OF PHYSICAL CHEMISTRY B, 2003, 107 (03) :659-663

[2] Chemical and thin-film strategies for new transparent conducting oxides [J].

Freeman, AJ ;

Poeppelmeier, KR ;

Mason, TO ;

Chang, RPH ;

Marks, TJ .

MRS BULLETIN, 2000, 25 (08) :45-51

[3] Self-assembled nanowire-nanoribbon junction arrays of ZnO [J].

Gao, PX ;

Wang, ZL .

JOURNAL OF PHYSICAL CHEMISTRY B, 2002, 106 (49) :12653-12658

[4] Selective atmospheric pressure chemical vapor deposition route to CdS arrays, nanowires, and nanocombs [J].

Ge, JP ;

Li, YD .

ADVANCED FUNCTIONAL MATERIALS, 2004, 14 (02) :157-162

[5] Transparent conducting oxides [J].

Ginley, DS ;

Bright, C .

MRS BULLETIN, 2000, 25 (08) :15-18

[6] Thermal reduction route to the fabrication of coaxial Zn/ZnO nanocables and ZnO nanotubes [J].

Hu, JQ ;

Li, Q ;

Meng, XM ;

Lee, CS ;

Lee, ST .

CHEMISTRY OF MATERIALS, 2003, 15 (01) :305-308

[7] Room-temperature ultraviolet nanowire nanolasers [J].

Huang, MH ;

Mao, S ;

Feick, H ;

Yan, HQ ;

Wu, YY ;

Kind, H ;

Weber, E ;

Russo, R ;

Yang, PD .

SCIENCE, 2001, 292 (5523) :1897-1899

[8] Hierarchical oxide nanostructures [J].

Lao, JY ;

Huang, JY ;

Wang, DZ ;

Ren, ZF .

JOURNAL OF MATERIALS CHEMISTRY, 2004, 14 (04) :770-773

[9] ZnO nanobridges and nanonails [J].

Lao, JY ;

Huang, JY ;

Wang, DZ ;

Ren, ZF .

NANO LETTERS, 2003, 3 (02) :235-238

[10] Applications and processing of transparent conducting oxides [J].

Lewis, BG ;

Paine, DC .

MRS BULLETIN, 2000, 25 (08) :22-27

← 1 2 3 →