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Title: Synthesis, characterization and optical properties of sheet-like ZnO

Abstract

Highlights: {yields} Sheet-like ZnO with regular hexagon shape was synthesized with a two-step method. {yields} Sheet-like ZnO predecessor was synthesized at low temperature in open system. {yields} The diameter and thickness of ZnO sheet can be controlled conveniently. {yields} This low-cost and environmentally benign approach is controllable and reproducible. {yields} Sheet-like ZnO may have potential application in optical and electrical devices. -- Abstract: Sheet-like ZnO with regular hexagon shape and uniform diameter has been successfully synthesized through a two-step method without any metal catalyst. First, the sheet-like ZnO precursor was synthesized in a weak alkaline carbamide environment with stirring in a constant temperature water-bath by the homogeneous precipitation method, then sheet-like ZnO was obtained by calcining at 600 {sup o}C for 2 h. The structures and optical properties of sheet-like ZnO have been characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), photoluminescence (PL) and UV-vis-NIR spectrophotometer. The results reveal that the product is highly crystalline with hexagonal wurtzite phase and has appearance of hexagon at (0 0 0 1) plane. The HRTEM images confirm that the individual sheet-like ZnO is single crystal. The PL spectrum exhibits a narrow ultraviolet emission at 397 nm andmore » a broad visible emission centering at 502 nm. The band gap of sheet-like ZnO is about 3.15 eV.« less

Authors:
 [1];  [1];  [2];  [1];  [2]; ; ;  [1];  [3]
  1. Faculty of Material Science and Chemistry Engineering, Engineering Research Center of Nano-Geo Materials of Ministry of Education, China University of Geosciences, Wuhan 430074 (China)
  2. (China)
  3. State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012 (China)
Publication Date:
OSTI Identifier:
22212223
Resource Type:
Journal Article
Journal Name:
Materials Research Bulletin
Additional Journal Information:
Journal Volume: 46; Journal Issue: 9; Other Information: Copyright (c) 2011 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0025-5408
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; MONOCRYSTALS; OPTICAL PROPERTIES; PHOTOLUMINESCENCE; PRECIPITATION; SCANNING ELECTRON MICROSCOPY; SEMICONDUCTOR MATERIALS; SYNTHESIS; THICKNESS; TRANSMISSION ELECTRON MICROSCOPY; X-RAY DIFFRACTION; ZINC OXIDES

Citation Formats

Liu, Changzhen, Meng, Dawei, E-mail: dwmeng@cug.edu.cn, State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, Wu, Xiuling, State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, Wang, Yongqian, Yu, Xiaohong, Zhang, Zhengjie, and Liu, Xiaoyang. Synthesis, characterization and optical properties of sheet-like ZnO. United States: N. p., 2011. Web. doi:10.1016/J.MATERRESBULL.2011.05.012.
Liu, Changzhen, Meng, Dawei, E-mail: dwmeng@cug.edu.cn, State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, Wu, Xiuling, State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, Wang, Yongqian, Yu, Xiaohong, Zhang, Zhengjie, & Liu, Xiaoyang. Synthesis, characterization and optical properties of sheet-like ZnO. United States. doi:10.1016/J.MATERRESBULL.2011.05.012.
Liu, Changzhen, Meng, Dawei, E-mail: dwmeng@cug.edu.cn, State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, Wu, Xiuling, State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, Wang, Yongqian, Yu, Xiaohong, Zhang, Zhengjie, and Liu, Xiaoyang. Thu . "Synthesis, characterization and optical properties of sheet-like ZnO". United States. doi:10.1016/J.MATERRESBULL.2011.05.012.
@article{osti_22212223,
title = {Synthesis, characterization and optical properties of sheet-like ZnO},
author = {Liu, Changzhen and Meng, Dawei, E-mail: dwmeng@cug.edu.cn and State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012 and Wu, Xiuling and State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012 and Wang, Yongqian and Yu, Xiaohong and Zhang, Zhengjie and Liu, Xiaoyang},
abstractNote = {Highlights: {yields} Sheet-like ZnO with regular hexagon shape was synthesized with a two-step method. {yields} Sheet-like ZnO predecessor was synthesized at low temperature in open system. {yields} The diameter and thickness of ZnO sheet can be controlled conveniently. {yields} This low-cost and environmentally benign approach is controllable and reproducible. {yields} Sheet-like ZnO may have potential application in optical and electrical devices. -- Abstract: Sheet-like ZnO with regular hexagon shape and uniform diameter has been successfully synthesized through a two-step method without any metal catalyst. First, the sheet-like ZnO precursor was synthesized in a weak alkaline carbamide environment with stirring in a constant temperature water-bath by the homogeneous precipitation method, then sheet-like ZnO was obtained by calcining at 600 {sup o}C for 2 h. The structures and optical properties of sheet-like ZnO have been characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), photoluminescence (PL) and UV-vis-NIR spectrophotometer. The results reveal that the product is highly crystalline with hexagonal wurtzite phase and has appearance of hexagon at (0 0 0 1) plane. The HRTEM images confirm that the individual sheet-like ZnO is single crystal. The PL spectrum exhibits a narrow ultraviolet emission at 397 nm and a broad visible emission centering at 502 nm. The band gap of sheet-like ZnO is about 3.15 eV.},
doi = {10.1016/J.MATERRESBULL.2011.05.012},
journal = {Materials Research Bulletin},
issn = {0025-5408},
number = 9,
volume = 46,
place = {United States},
year = {2011},
month = {9}
}