XAFS analysis and luminescent properties of ZnS:Mn2+ nanoparticles and nanorods with cubic and hexagonal structure

被引：16

作者：

Cao, Jian ^{[2
,3
]}

Yang, Jinghai ^{[1
]}

Zhang, Yongjun ^{[1
]}

Wang, Yaxin ^{[1
]}

Yang, Lili ^{[1
]}

Wang, Dandan ^{[2
,3
]}

Liu, Yang ^{[1
]}

Liu, Xiaoyan ^{[1
]}

Xie, Zhi ^{[4
]}

机构：

[1] Jilin Normal Univ, Inst Condensed State Phys, Siping 136000, Peoples R China

[2] Chinese Acad Sci, Key Lab Excited State Phys, Changchun Inst Opt Fine Mech & Phys, Changchun 130033, Peoples R China

[3] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China

[4] Univ Sci & Technol China, Natl Synchrotron Radiat Lab, Hefei 230029, Anhui, Peoples R China

来源：

OPTICAL MATERIALS | 2010年 / 32卷 / 05期

基金：

中国国家自然科学基金;

关键词：

ZnS:Mn2+; Nanoparticles; Nanorods; XAFS; Luminescence; ZNS-MN; OPTICAL-PROPERTIES; QUANTUM DOTS; THIN-FILMS; NANOCRYSTALS; NANOBELTS; WURTZITE; SINGLE; IONS; NANOWIRES;

D O I：

10.1016/j.optmat.2010.01.017

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

ZnS:Mn2+ nanocrystals (NCs) were synthesized by a simple solvothermal method at 180 degrees C in different solvents. The NCs prepared in ethanol yielded cubic nanoparticles (NPs) with diameters of 10-15 nm. The NCs prepared in ethylenediamine and water (1:1 in volume ratio) yielded hexagonal nanorods (NRs) with diameters of 8-10 nm. X-ray absorption fine structure (XAFS) measurements were carried out to probe the local environment surrounding the Mn ions in the NPs and the NRs. The results showed that Mn ions were incorporated into the ZnS lattice substituting the Zn sites. The yellow-orange emission from the Mn2+ T-4(1)-(6)A(1) transition was observed, its intensity relative to the blue-green emission increased from NPs to NRs. The surface effect was the main factor affecting the thermal and optical stability of NCs. The fluorescence lifetime of the Mn2+ emission for the NPs and NRs was 0.662 and 0.224 ms, respectively. Crown Copyright (c) 2010 Published by Elsevier B.V. All rights reserved.

引用

页码：643 / 647

页数：5

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