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学科主题: 物理化学
题名: Visible emission characteristics from different defects of ZnS nanocrystals
作者: Wang, Xiuli1, 2;  Shi, Jianying1;  Feng, Zhaochi1;  Li, Mingrun1;  Li, Can1
通讯作者: 李灿
刊名: PHYSICAL CHEMISTRY CHEMICAL PHYSICS
发表日期: 2011
DOI: 10.1039/c0cp01620a
卷: 13, 期:10, 页:4715-4723
收录类别: SCI
文章类型: Article
部门归属: 5
项目归属: 503
产权排名: 1,1
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical ;  Physics, Atomic, Molecular & Chemical
摘要: Visible emission characteristics from different defects of ZnS nanocrystals
研究领域[WOS]: Chemistry ;  Physics
英文摘要: Various sized ZnS nanocrystals were prepared by treatment under H(2)S atmosphere. Resonance Raman spectra indicate that the electron-phonon coupling increases with increasing the size of ZnS. Surface and interfacial defects are formed during the treatment processes. Blue, green and orange emissions are observed for these ZnS. The blue emission (430 nm) from ZnS without treatment is attributed to surface states. ZnS sintered at 873 K displays orange luminescence (620 nm) while ZnS treated at 1173 K shows green emission (515 nm). The green luminescence is assigned to the electron transfer from sulfur vacancies to interstitial sulfur states, and the orange emission is caused by the recombination between interstitial zinc states and zinc vacancies. The lifetimes of the orange emission are much slower than that of the green luminescence and sensitively dependent on the treatment temperature. Controlling defect formation makes ZnS a potential material for photoelectrical applications.
关键词[WOS]: RESONANT RAMAN-SCATTERING ;  ZINC-SULFIDE NANOBELTS ;  PHOTOLUMINESCENCE PROPERTIES ;  OPTICAL-PROPERTIES ;  CATALYTIC GROWTH ;  LARGE-SCALE ;  NANOSTRUCTURES ;  LUMINESCENCE ;  TEMPERATURE ;  NANOPARTICLES
语种: 英语
WOS记录号: WOS:000287584700064
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/115715
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

Recommended Citation:
Wang, Xiuli,Shi, Jianying,Feng, Zhaochi,et al. Visible emission characteristics from different defects of ZnS nanocrystals[J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS,2011,13(10):4715-4723.
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