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Morphological evolution of ZnO nanostructures: experimental and preliminary simulation studies
Alternative TitleCrystengcomm
Tian, Huijuan1,2; Xu, Junbo1; Tian, Yajun3; Deng, Pingye4; Wen, Hao1
2012
Source PublicationCRYSTENGCOMM
ISSN1466-8033
Volume14Issue:17Pages:5539-5543
AbstractZnO nanostructures with various morphologies were prepared by thermal evaporation of Zn powders at 600 degrees C and atmospheric pressure without any catalysts. Field-emission scanning electron microscope images show various ZnO morphologies at both the downstream and upstream side of Zn sources. A continuous morphological transition from nails to needles was observed upstream. The morphologies downstream are nanopencils, and the tip of the pencils is smaller as the position approaches the Zn source. In general, the size upstream is larger than the one downstream. X-ray diffraction patterns indicate that all ZnO nanostructures grow preferentially along the [0001] direction. Room temperature photoluminescence spectra show that the intensity ratio of UV to green emission increases from the upstream products to the downstream products. The experimental results are elucidated through computational fluid dynamics simulation. Concentration fields of O-2 and Zn vapor show that the distributions of O-2 and Zn vapor are uneven upstream and uniform downstream.; ZnO nanostructures with various morphologies were prepared by thermal evaporation of Zn powders at 600 degrees C and atmospheric pressure without any catalysts. Field-emission scanning electron microscope images show various ZnO morphologies at both the downstream and upstream side of Zn sources. A continuous morphological transition from nails to needles was observed upstream. The morphologies downstream are nanopencils, and the tip of the pencils is smaller as the position approaches the Zn source. In general, the size upstream is larger than the one downstream. X-ray diffraction patterns indicate that all ZnO nanostructures grow preferentially along the [0001] direction. Room temperature photoluminescence spectra show that the intensity ratio of UV to green emission increases from the upstream products to the downstream products. The experimental results are elucidated through computational fluid dynamics simulation. Concentration fields of O-2 and Zn vapor show that the distributions of O-2 and Zn vapor are uneven upstream and uniform downstream.
KeywordThermal Evaporation Optical-properties Vapor-deposition Growth Photoluminescence Nanowires Arrays Nanobelts Transport Nanonails
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1039/c2ce25219h
URL查看原文
Indexed BySCI
Language英语
WOS KeywordTHERMAL EVAPORATION ; OPTICAL-PROPERTIES ; VAPOR-DEPOSITION ; GROWTH ; PHOTOLUMINESCENCE ; NANOWIRES ; ARRAYS ; NANOBELTS ; TRANSPORT ; NANONAILS
WOS Research AreaChemistry ; Crystallography
WOS SubjectChemistry, Multidisciplinary ; Crystallography
WOS IDWOS:000306972100026
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Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/6400
Collection研究所(批量导入)
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
3.Natl Inst Clean & Low Carbon Energy, Beijing 102209, Peoples R China
4.Beijing Ctr Phys & Chem Anal, Beijing 100089, Peoples R China
Recommended Citation
GB/T 7714
Tian, Huijuan,Xu, Junbo,Tian, Yajun,et al. Morphological evolution of ZnO nanostructures: experimental and preliminary simulation studies[J]. CRYSTENGCOMM,2012,14(17):5539-5543.
APA Tian, Huijuan,Xu, Junbo,Tian, Yajun,Deng, Pingye,&Wen, Hao.(2012).Morphological evolution of ZnO nanostructures: experimental and preliminary simulation studies.CRYSTENGCOMM,14(17),5539-5543.
MLA Tian, Huijuan,et al."Morphological evolution of ZnO nanostructures: experimental and preliminary simulation studies".CRYSTENGCOMM 14.17(2012):5539-5543.
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