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个人信息Personal Information
教授
博士生导师
硕士生导师
任职 : 精细化工全国重点实验室主任，教育部智能材料化工前沿科学中心执行主任，大连理工大学膜科学与技术研究开发中心主任
性别：女
毕业院校：中国科学院大连化物所
学位：博士
所在单位：化工学院
学科：化学工程. 膜科学与技术. 生物医学工程
联系方式：hgaohong@dlut.edu.cn
电子邮箱：hgaohong@dlut.edu.cn
PEG induced tunable morphology and band gap of ZnO
点击次数：
论文类型：期刊论文
发表时间：2017-08-15
发表刊物：MATERIALS LETTERS
收录刊物：SCIE、EI、Scopus
卷号：201
页面范围：85-88
ISSN号：0167-577X
关键字：Semiconductors; Polyethylene glycol; Band gap; Defects; Photoluminescence
摘要：We demonstrate the fabrication ZnO nanostructures with tunable morphology and band gap by polyethylene glycol (PEG) assisted microemulsion strategy. Rectangular and spindle-like ZnO nanoparticles were obtained for PEG 200, 400 and 1000, while ZnO nanorods were achieved by PEG 10000. The formation mechanism was discussed correspondingly. XRD and PL spectra reveal that the defects in ZnO products are enhanced with PEG molecular weight increasing from 200 to 10000, resulting in the band gap energies decreasing from 3.12 eV to 2.95 eV, as demonstrated in the UV-Vis absorption spectra. The present research work can provide a new way to tune the optical property of ZnO. (C) 2017 Elsevier B.V. All rights reserved.