Terahertz dielectric properties and low-frequency phonon Resonances of ZnO nanostructures

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	Terahertz dielectric properties and low-frequency phonon Resonances of ZnO nanostructures
	Han, JG（韩家广）; Zhang, W; Chen, W; Ray, S; Zhang, J; He, MX; Azad, AK; Zhu, ZY(朱志远）; Zhang, W (reprint author), Oklahoma State Univ, Sch Elect & Comp Engn, Oklahoma City, OK 74078 USA
	2007
Source Publication	JOURNAL OF PHYSICAL CHEMISTRY C
ISSN	1932-7447
Volume	111 Issue:35 Pages:13000
Abstract	Far-infrared optical and dielectric properties of nanostructured ZnO of different morphologies are characterized by terahertz time-domain spectroscopy. Frequency-dependent complex dielectric function, power absorption, and refractive index are experimentally measured in the terahertz regime. The results are analyzed and well fit with dielectric theories combined with effective medium models. Different ZnO nanostructure morphologies exhibit different characteristics due to diverse resonance mechanisms dominated by either free electrons or phonons. The dielectric function of tubular and prismlike ZnO structures exhibits the Drude-like behavior, while it is dominated by the low-frequency phonon resonances for nanowires. Additionally, the overall low-frequency phonon resonances of these nanostructures are measured by Raman scattering spectroscopy, showing good consistency with those of bulk wurtzite single-crystal ZnO.
Subject Area	Nuclear Science & Technology ; Physics
Indexed By	SCI
Language	英语
Funding Project	应物所项目组
Document Type	期刊论文
Identifier	http://ir.sinap.ac.cn/handle/331007/7853
Collection	中科院上海应用物理研究所2004-2010年
Corresponding Author	Zhang, W (reprint author), Oklahoma State Univ, Sch Elect & Comp Engn, Oklahoma City, OK 74078 USA
Recommended Citation GB/T 7714	Han, JG,Zhang, W,Chen, W,et al. Terahertz dielectric properties and low-frequency phonon Resonances of ZnO nanostructures[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2007,111(35):13000.
APA	Han, JG.,Zhang, W.,Chen, W.,Ray, S.,Zhang, J.,...&Zhang, W .(2007).Terahertz dielectric properties and low-frequency phonon Resonances of ZnO nanostructures.JOURNAL OF PHYSICAL CHEMISTRY C,111(35),13000.
MLA	Han, JG,et al."Terahertz dielectric properties and low-frequency phonon Resonances of ZnO nanostructures".JOURNAL OF PHYSICAL CHEMISTRY C 111.35(2007):13000.

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