Structural and optical characterization of potassium doped zinc oxide nanosheets

被引：8

作者：

Athma, P. V. ^{[1
,2
]}

Johns, N. ^{[3
]}

Anila, E. I. ^{[1
]}

Safeera, T. A. ^{[1
]}

机构：

[1] UC Coll, Dept Phys, Optoelect & Nanomat Res Lab, Aluva 683102, Kerala, India

[2] SNM Coll, Dept Phys, Maliankara 683516, Kerala, India

[3] Indian Inst Technol, Dept Met Engn & Mat Sci, Bombay 400076, Maharashtra, India

来源：

OPTICAL MATERIALS | 2014年 / 38卷

关键词：

Photoluminescence; X-Ray Diffraction; Wet chemical method; Scanning electron microscopy; ZNO NANOSHEETS; GROWTH; FABRICATION; PHOTOLUMINESCENCE; GREEN;

D O I：

10.1016/j.optmat.2014.10.034

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper presents the synthesis of potassium (K) doped zinc oxide nano sheets at room temperature by wet chemical method. The structure and morphology of the crystals prepared for different molar concentrations of K were analysed by X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM). Lattice strain and grain size were calculated from the Williamson-Hall (WH) Plot and Debye-Scherrer's formula for different concentrations of potassium. Absorption studies reveal that absorption is minimum in the visible region and band gap energy is found to decrease with increase in K concentration. The photoluminescence (PL) spectra were used to study the luminescence behavior and the nature of defects in the samples and the overall emission is white for all the samples except the one prepared with 1.2 M potassium doping. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：223 / 227

页数：5

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