Synthesis, Optical Properties, and Ethanol-Sensing Properties of Bicone-like ZnO Microcrystals via a Simple Solution Method

doi:10.1021/jp9020849

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	Synthesis, Optical Properties, and Ethanol-Sensing Properties of Bicone-like ZnO Microcrystals via a Simple Solution Method
	Yu, Qingjiang 1,2; Yu, Culling 3; Fu, Wuyou 1; Yuan, Mingxia 1; Guo, Jin ; Li, Minghui 1; Liu, Shikai 1; Zou, Guangtian 1; Yang, Haibin 1
刊名	JOURNAL OF PHYSICAL CHEMISTRY C
	2009-07-16
卷号	113 期号:28 页码:12016-12021
ISSN号	1932-7447
DOI	10.1021/jp9020849
英文摘要	Large-scale uniform bicone-like ZnO microcrystals were successfully synthesized via a simple solution method at lower temperature (80 degrees C). The as-prepared bicones, composed of two cones, possess a single-crystal hexagonal structure and grow along the [0001] direction. The influence of the reactant concentration on the size and shape of the ZnO samples has been studied in detail, and the results revealed that reactant concentration plays a crucial role in determining the final morphologies of the samples. The growth process of the bicone-like ZnO microcrystals was viewed by field emission scanning electron microscopy (FESEM) characterization, and a possible formation mechanism was proposed. Optical properties of the bicone-like ZnO microcrystals were also investigated by photoluminescence (PL) spectroscopy. The room-temperature PL spectrum of the bicone-like ZnO microcrystals shows a strong UV emission peak. The UV emission is further identified to originate from the radiative free exciton recombination by temperature-dependent PL. In addition, the bicone-like ZnO microcrystals exhibit excellent sensing properties toward ethanol gas at an operating temperature of 300 degrees C. The response and recovery times are 2 and 3 s, respectively. These results indicate that the bicone-like ZnO microcrystals have potential applications in fabricating optoelectronic devices and gas sensors.
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000268139500009
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/66551]
专题	中国科学院化学研究所
通讯作者	Yang, Haibin
作者单位	1.Jilin Univ, State Key Lab Superhard Mat, Changchun 130012, Peoples R China 2.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China 3.Jilin Inst Metrol, Changchun 130022, Peoples R China
推荐引用方式 GB/T 7714	Yu, Qingjiang,Yu, Culling,Fu, Wuyou,et al. Synthesis, Optical Properties, and Ethanol-Sensing Properties of Bicone-like ZnO Microcrystals via a Simple Solution Method[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2009,113(28):12016-12021.
APA	Yu, Qingjiang.,Yu, Culling.,Fu, Wuyou.,Yuan, Mingxia.,Guo, Jin.,...&Yang, Haibin.(2009).Synthesis, Optical Properties, and Ethanol-Sensing Properties of Bicone-like ZnO Microcrystals via a Simple Solution Method.JOURNAL OF PHYSICAL CHEMISTRY C,113(28),12016-12021.
MLA	Yu, Qingjiang,et al."Synthesis, Optical Properties, and Ethanol-Sensing Properties of Bicone-like ZnO Microcrystals via a Simple Solution Method".JOURNAL OF PHYSICAL CHEMISTRY C 113.28(2009):12016-12021.