Morphology-controlled synthesis, growth mechanism, optical and microwave absorption properties of ZnO nanocombs

被引：106

作者：

Zhuo, R. F. ^{[1
]}

Feng, H. T. ^{[1
]}

Liang, Q. ^{[1
]}

Liu, J. Z. ^{[1
]}

Chen, J. T. ^{[1
]}

Yan, D. ^{[1
]}

Feng, J. J. ^{[1
]}

Li, H. J. ^{[1
]}

Cheng, S. ^{[1
]}

Geng, B. S. ^{[1
]}

Xu, X. Y. ^{[1
]}

Wang, J. ^{[1
]}

Wu, Z. G. ^{[1
]}

Yan, P. X. ^{[1
,2
]}

Yue, G. H. ^{[3
]}

机构：

[1] Lanzhou Univ, Dept Phys, Lanzhou 730000, Peoples R China

[2] Chinese Acad Sci, Inst Chem & Phys, Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China

[3] Xiamen Univ, Dept Mat Sci & Engn, Xiamen 361005, Peoples R China

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2008年 / 41卷 / 18期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1088/0022-3727/41/18/185405

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

ZnO nanocombs and nanorods with different morphologies have been successfully synthesized through a simple metal vapour deposition route at 600-750 degrees C using pure zinc powder or zinc and graphite powders as source materials. The structures and morphologies of the products were characterized in detail by using x-ray diffraction, scanning electron microscopy, transmission electron microscopy and laser Raman spectrometer. The morphologies of the products can be easily controlled by tuning the following four factors: reaction temperature, the distance between the source and the substrates, the kinds of substrates and the kinds of precursors. Possible growth mechanisms for the formation of ZnO nanostructures with different morphologies are discussed. Photoluminescence studies show that there are sharp UV and broad defect-related green emissions for all products. Relative intensity of the UV to defect-related green emissions decreases from ZnO nanorods to nanocombs. Microwave absorption properties of these nanocombs are also investigated. The value of the minimum reflection loss is -12 dB at 11 GHz for the ZnO nanocomb composite with a thickness of 2.5 mm.

引用

页数：13

共 75 条

[1]

[Anonymous], 2004, ANGEW CHEM-GER EDIT

[2] Dual-mode mechanical resonance of individual ZnO nanobelts [J].

Bai, XD ;

Gao, PX ;

Wang, ZL ;

Wang, EG .

APPLIED PHYSICS LETTERS, 2003, 82 (26) :4806-4808

[3] Synthesis and photoluminescence studies on ZnO nanowires [J].

Banerjee, D ;

Lao, JY ;

Wang, DZ ;

Huang, JY ;

Steeves, D ;

Kimball, B ;

Ren, ZF .

NANOTECHNOLOGY, 2004, 15 (03) :404-409

[4] Large-quantity free-standing ZnO nanowires [J].

Banerjee, D ;

Lao, JY ;

Wang, DZ ;

Huang, JY ;

Ren, ZF ;

Steeves, D ;

Kimball, B ;

Sennett, M .

APPLIED PHYSICS LETTERS, 2003, 83 (10) :2061-2063

[5] MECHANISM OF WHISKER GROWTH .3. NATURE OF GROWTH SITES [J].

BRENNER, SS ;

SEARS, GW .

ACTA METALLURGICA, 1956, 4 (03) :268-270

[6] Raman scattering in ZnO thin films doped with Fe, Sb, Al, Ga, and Li [J].

Bundesmann, C ;

Ashkenov, N ;

Schubert, M ;

Spemann, D ;

Butz, T ;

Kaidashev, EM ;

Lorenz, M ;

Grundmann, M .

APPLIED PHYSICS LETTERS, 2003, 83 (10) :1974-1976

[7] RESONANT RAMAN-SCATTERING IN ZNO [J].

CALLEJA, JM ;

CARDONA, M .

PHYSICAL REVIEW B, 1977, 16 (08) :3753-3761

[8] Microwave absorption properties and mechanism of cagelike ZnO/SiO2 nanocomposites [J].

Cao, Mao-Sheng ;

Shi, Xiao-Ling ;

Fang, Xiao-Yong ;

Jin, Hai-Bo ;

Hou, Zhi-Ling ;

Zhou, Wei ;

Chen, Yu-Jin .

APPLIED PHYSICS LETTERS, 2007, 91 (20)

[9] Microwave absorption properties of the ZnO nanowire-polyester composites [J].

Chen, YJ ;

Cao, MS ;

Wang, TH ;

Wan, Q .

APPLIED PHYSICS LETTERS, 2004, 84 (17) :3367-3369

[10] Growth mechanism and characterization of ZnO microbelts and self-assembled [J].

Chen, YQ ;

Jiang, J ;

He, ZY ;

Su, Y ;

Cai, D ;

Chen, L .

MATERIALS LETTERS, 2005, 59 (26) :3280-3283

← 1 2 3 4 5 6 7 8 →