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

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	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
刊名	Advanced Functional Materials
	2009
卷号	19 期号:3 页码:484-490
关键词	assisted synthesis optical-properties nanoribbon arrays nanowire arrays wurtzite zns cone arrays growth nanostructures fabrication nanobelts
ISSN号	1616-301X
中文摘要	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.
原文出处	://WOS:000263640600027
公开日期	2012-04-13
内容类型	期刊论文
源URL	[http://210.72.142.130/handle/321006/31843]
专题	金属研究所_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.