Temperature and pressure dependences of the Mn2+ and donor-acceptor emissions in ZnS : Mn2+ nanoparticles

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	Temperature and pressure dependences of the Mn2+ and donor-acceptor emissions in ZnS : Mn2+ nanoparticles
	Chen W ; Su FH ; Li GH ; Joly AG ; Malm JO ; Bovin JO
刊名	journal of applied physics
	2002
卷号	92 期号:4 页码:1950-1955
关键词	ZNS NANOCLUSTERS LUMINESCENCE NANOCRYSTALS PHOTOLUMINESCENCE SEMICONDUCTOR SURFACE METAL SIZE
ISSN号	0021-8979
通讯作者	chen w,nomad inc,1024 s innovat way,stillwater,ok 74074 usa.
中文摘要	temperature and pressure dependent measurements have been performed on 3.5 nm zns:mn2+ nanoparticles. as temperature increases, the donor-acceptor (da) emission of zns:mn2+ nanoparticles at 440 nm shifts to longer wavelengths while the mn2+ emission (t-4(1)-(6)a(1)) shifts to shorter wavelengths. both the da and mn2+ emission intensities decrease with temperature with the intensity decrease of the da emission being much more pronounced. the intensity decreases are fit well with the theory of thermal quenching. as pressure increases, the mn2+ emission shifts to longer wavelengths while the da emission wavelength remains almost constant. the pressure coefficient of the da emission in zns:mn2+ nanoparticles is approximately -3.2 mev/gpa, which is significantly smaller than that measured for bulk materials. the relatively weak pressure dependence of the da emission is attributed to the increase of the binding energies and the localization of the defect wave functions in nanoparticles. the pressure coefficient of mn2+ emission in zns:mn2+ nanoparticles is roughly -34.3 mev/gpa, consistent with crystal field theory. the results indicate that the energy transfer from the zns host to mn2+ ions is mainly from the recombination of carriers localized at mn2+ ions. (c) 2002 american institute of physics.
学科主题	半导体物理
收录类别	SCI
语种	英语
公开日期	2010-08-12
内容类型	期刊论文
源URL	[http://ir.semi.ac.cn/handle/172111/11832]
专题	半导体研究所_中国科学院半导体研究所（2009年前）
推荐引用方式 GB/T 7714	Chen W,Su FH,Li GH,et al. Temperature and pressure dependences of the Mn2+ and donor-acceptor emissions in ZnS : Mn2+ nanoparticles[J]. journal of applied physics,2002,92(4):1950-1955.
APA	Chen W,Su FH,Li GH,Joly AG,Malm JO,&Bovin JO.(2002).Temperature and pressure dependences of the Mn2+ and donor-acceptor emissions in ZnS : Mn2+ nanoparticles.journal of applied physics,92(4),1950-1955.
MLA	Chen W,et al."Temperature and pressure dependences of the Mn2+ and donor-acceptor emissions in ZnS : Mn2+ nanoparticles".journal of applied physics 92.4(2002):1950-1955.