Chin. Phys. Lett.  2008, Vol. 25 Issue (2): 698-699    DOI:
Original Articles |
Influence of Surface Quenching Effects on Luminescent Dynamics of ZnS:Mn2+ Nanocrystals
GAO Chang-Cheng;HUANG Shi-Hua;YOU Fang-Tian;KANG Kai;FENG Ying
Key Laboratory of Luminescence and Optical Information (Ministry of Education), Institute of Optoelectronic Technology, Beijing Jiaotong University, Beijing 100044
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GAO Chang-Cheng, HUANG Shi-Hua, YOU Fang-Tian et al  2008 Chin. Phys. Lett. 25 698-699
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Abstract A model describing surface quenching of isolated ion centres in nanocrystals is proposed based on the energy transfer between the doped ions and the nanocrystalline surface quenching centres. The quenching rate depends on the position of the ions in the nanocrystal, hence the decay curve under non-selective excitation is generally nonexponential. The decay curve calculated with this model is in good agreement with that of the 4T16A1 emission in ZnS:Mn2+ nanocrystals.
Keywords: 78.20.Bh      42.62.Fi      61.46.+w      61.72.Vv     
Received: 29 August 2007      Published: 30 January 2008
PACS:  78.20.Bh (Theory, models, and numerical simulation)  
  42.62.Fi (Laser spectroscopy)  
  61.46.+w  
  61.72.Vv  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2008/V25/I2/0698
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GAO Chang-Cheng
HUANG Shi-Hua
YOU Fang-Tian
KANG Kai
FENG Ying
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