Raman scattering of single tetrapod-like ZnO nanostructure synthesized by catalyst-free rapid evaporation

被引：33

作者：

Huang, S. H. ^{[1
,2
]}

Chen, Zhanghai ^{[1
,2
]}

Shen, X. C. ^{[1
,2
]}

Zhu, Z. Q. ^{[3
]}

Yu, K. ^{[3
]}

机构：

[1] Fudan Univ, Dept Phys, Shanghai 200433, Peoples R China

[2] Fudan Univ, Natl Key Lab Surface Phys, Shanghai 200433, Peoples R China

[3] E China Normal Univ, Dept Elect Engn, Shanghai 200062, Peoples R China

来源：

SOLID STATE COMMUNICATIONS | 2008年 / 145卷 / 7-8期

基金：

中国国家自然科学基金;

关键词：

ZnO; tetrapod-like nanostructure; spatially-resolved mapping; polarized Raman scattering;

D O I：

10.1016/j.ssc.2007.11.014

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The x-y spatially-resolved mappings of polarized Raman scattering spectra from a single tetrapod-like ZnO nanostructure were proposed and performed with different polarized scattering configurations by utilizing the intrinsic geometry configuration. The ZnO nanostructures were synthesized by rapid thermal evaporation of metal zinc without metal catalyst and graphite additive. The sharp spectral peaks from all Raman active phonon modes have been distinctly observed. However, no pronounced quantum confinement effect has been observed for the tetrapod-like nanostructure with diameter of 50 nm. In addition, larger red shifts of longitudinal-optical phonon scattering peaks, compared with bulk ZnO, were observed in the single tetrapod-like nanostructure, which were primarily attributed to laser-induced heating or/and the phonon localization effects. (C) 2007 Elsevier Ltd. All rights reserved.

引用

页码：418 / 422

页数：5

共 26 条

[1] Origin of the optical phonon frequency shifts in ZnO quantum dots [J].

Alim, KA ;

Fonoberov, VA ;

Balandin, AA .

APPLIED PHYSICS LETTERS, 2005, 86 (05) :1-3

[2] Micro-Raman investigation of optical phonons in ZnO nanocrystals [J].

Alim, KA ;

Fonoberov, VA ;

Shamsa, M ;

Balandin, AA .

JOURNAL OF APPLIED PHYSICS, 2005, 97 (12)

[3] Infrared dielectric functions and phonon modes of high-quality ZnO films [J].

Ashkenov, N ;

Mbenkum, BN ;

Bundesmann, C ;

Riede, V ;

Lorenz, M ;

Spemann, D ;

Kaidashev, EM ;

Kasic, A ;

Schubert, M ;

Grundmann, M ;

Wagner, G ;

Neumann, H ;

Darakchieva, V ;

Arwin, H ;

Monemar, B .

JOURNAL OF APPLIED PHYSICS, 2003, 93 (01) :126-133

[4] Optically pumped lasing of ZnO at room temperature [J].

Bagnall, DM ;

Chen, YF ;

Zhu, Z ;

Yao, T ;

Koyama, S ;

Shen, MY ;

Goto, T .

APPLIED PHYSICS LETTERS, 1997, 70 (17) :2230-2232

[5] 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

[6]

Bunn CW, 1935, P PHYS SOC LOND, V47, P836

[7] RAMAN EFFECT IN ZINC OXIDE [J].

DAMEN, TC ;

PORTO, SPS ;

TELL, B .

PHYSICAL REVIEW, 1966, 142 (02) :570-&

[8] Interface and confined optical phonons in wurtzite nanocrystals [J].

Fonoberov, VA ;

Balandin, AA .

PHYSICAL REVIEW B, 2004, 70 (23) :1-4

[9] 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

[10] QUANTITATIVE DETERMINATION OF SOURCES OF ELECTRO-OPTIC EFFECT IN LINBO3 AND LITAO3 [J].

KAMINOW, IP ;

JOHNSTON, WD .

PHYSICAL REVIEW, 1967, 160 (03) :519-&

← 1 2 3 →