Optical properties and characterization of zinc nitride nanoneedles prepared from ball-milled Zn powders

被引：21

作者：

Khan, Waheed S. ^{[1
]}

Cao, Chuanbao ^{[1
]}

Ping, Dong Yu ^{[1
]}

Nabi, Ghulam ^{[1
]}

Hussain, Sajad ^{[1
]}

Butt, Faheem K. ^{[1
]}

Cao, Tai ^{[1
]}

机构：

[1] Beijing Inst Technol, Res Ctr Mat Sci, Sch Mat Sci & Engn, Beijing 100081, Peoples R China

来源：

MATERIALS LETTERS | 2011年 / 65卷 / 09期

基金：

中国国家自然科学基金; 高等学校博士学科点专项科研基金;

关键词：

Semiconductors; Nanocrystalline materials; Optical properties; STRUCTURAL-PROPERTIES; GAN NANOWIRES; THIN-FILMS; GROWTH; PHOTOLUMINESCENCE;

D O I：

10.1016/j.matlet.2011.01.040

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Zinc nitride nanoneedles (ZNNs) with diameters at stem and tip parts as 200-300 nm and 30-70 nm respectively have been prepared by the nitridation of ball-milled zinc powders at 600 degrees C for 120 min under NH(3) gas environment. The structural, compositional and morphological characterizations of the product were conducted by X-ray diffraction, energy dispersive X-ray spectroscopy, scanning electron microscopy and transmission electron microscopy. From transmission spectrum data, an indirect band gap of 2.72 eV has been calculated for ZNNs whereas photoluminescence studies exhibited a strong UV excitonic mission band at 395 nm as well as two weak defect related blue emissions at 453 and 465 nm. A vapor-solid (VS) process based growth mechanism for the formation of ZNNs has also been discussed briefly. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：1264 / 1267

页数：4

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