Field Emission and Cathodoluminescence of ZnS Hexagonal Pyramids of Zinc Blende Structured Single Crystals

IMR OpenIR

	Field Emission and Cathodoluminescence of ZnS Hexagonal Pyramids of Zinc Blende Structured Single Crystals
	Z. G. Chen; J. Zou; D. W. Wang; L. C. Yin; G. Liu; Q. F. Liu; C. H. Sun; X. D. Yao; F. Li; X. L. Yuan; T. Sekiguchi; G. Q. Lu; H. M. Cheng
	2009
发表期刊	Advanced Functional Materials
ISSN	1616-301X
卷号	19 期号:3 页码:484-490
摘要	Single-crystal hexagonal pyramids of zinc: blende ZnS are fabricated by facile thermal evaporation in an ammonia atmosphere at 1150 degrees C. It is found that ZnS pyramids grow along the [111] crystal axis and possess a sharp tip with a diameter of similar to 10 nm and a micrometer-sized base. The structural model and growth mechanism are proposed based on crystallographic characteristics. This unique ZnS pyramid structure exhibits a low turn-on field (2.81 V mu m(-1)), a high field-enhancement factor (over 3000), a large field-emission current density (20 mA cm(-2)), and good stability with very small fluctuation (0.9%). These superior field-emission properties are clearly attributed to the pyramid morphology, with micrometer-sized bases and nanotips, and high crystallinity. Moreover, a stable UV emission of 337 nm at room temperature is observed and can be ascribed to the band emission of the zinc blende phase. These results suggest that the ZnS hexagonal pyramids can be expected to find promoting applications as field emitters and optoelectronic devices.
部门归属	[chen, zhi-gong; wang, dai-wei; yin, li-chang; liu, gong; liu, qingfeng; li, feng; cheng, hui-ming] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [chen, zhi-gong; sun, cheng-hua; yao, xiongdong; lu, goo qing] univ queensland, sch engn, arc ctr excellence funct nanomat, brisbane, qld 4072, australia. [chen, zhi-gong; sun, cheng-hua; yao, xiongdong; lu, goo qing] univ queensland, aibn, brisbane, qld 4072, australia. [zou, jin] univ queensland, sch engn, brisbane, qld 4072, australia. [zou, jin] univ queensland, ctr microscopy & microanal, brisbane, qld 4072, australia. [yuan, xiao-li; sekiguchi, takashi] natl inst mat sci, adv elect mat ctr, tsukuba, ibaraki 3050044, japan.;chen, zg (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china;cheng@imr.ac.cn
关键词	Assisted Synthesis Optical-properties Nanoribbon Arrays Nanowire Arrays Wurtzite Zns Cone Arrays Growth Nanostructures Fabrication Nanobelts
URL	查看原文
WOS记录号	WOS:000263640600027
引用统计	被引频次：44[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/31843
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Z. G. Chen,J. Zou,D. W. Wang,et al. Field Emission and Cathodoluminescence of ZnS Hexagonal Pyramids of Zinc Blende Structured Single Crystals[J]. Advanced Functional Materials,2009,19(3):484-490.
APA	Z. G. Chen.,J. Zou.,D. W. Wang.,L. C. Yin.,G. Liu.,...&H. M. Cheng.(2009).Field Emission and Cathodoluminescence of ZnS Hexagonal Pyramids of Zinc Blende Structured Single Crystals.Advanced Functional Materials,19(3),484-490.
MLA	Z. G. Chen,et al."Field Emission and Cathodoluminescence of ZnS Hexagonal Pyramids of Zinc Blende Structured Single Crystals".Advanced Functional Materials 19.3(2009):484-490.