Controllable low temperature vapor-solid growth and hexagonal disk enhanced field emission property of ZnO nanorod arrays and hexagonal nanodisk networks.

Content Provider	Semantic Scholar
Author	Yang, Fan Liu, Wei-Hua Wang, Xue-Wen Zheng, Jie Zhao, Hua Yang, Heqing
Copyright Year	2012
Abstract	ZnO nanorod arrays and nanodisk networks were grown directly on Si substrate by thermal evaporation of ZnCl(2) powder and a mixture of ZnCl(2) and InCl(3)·4H(2)O at 450 °C in air, respectively. The ZnO nanorods with the diameters of 0.64 to 0.91 μm and length of about 5.1 μm are single crystalline with the hexagonal structure and grow along the [001] direction. The nanodisk has perfect hexagonal shape, grow mainly along the [0110] directions, and are enclosed by ±(0001) top and bottom surfaces. ZnO nanoparticle films oriented in the [001] direction formed first served as seeds, and grow into nanorod arrays via the vapor-solid (VS) process. However, when InCl(3)·4H(2)O was introduced into the reaction system ZnO thick nanosheet films are first formed because of the local segregation of the doping element of indium. The ZnO thick nanosheet films served as seeds, and grow into nanodisk networks via the V-S process. Photoluminescence and field emission properties of the as-obtained ZnO nanorod arrays and hexagonal nanodisk networks have been studied. It was found that the hexagonal nanodisk networks exhibit strong blue-green emissions originated from defect states and enhanced field emission property.
File Format	PDF HTM / HTML
DOI	10.1021/am300561w
PubMed reference number	22732138
Journal	Medline
Volume Number	4
Issue Number	8
Alternate Webpage(s)	http://or.nsfc.gov.cn/bitstream/00001903-5/24363/1/1000004351085.pdf
Alternate Webpage(s)	https://doi.org/10.1021/am300561w
Journal	ACS applied materials & interfaces
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article