Improved Luminescence Properties and Thermal Stability of ZnS
Quantum Dots by Organic and Inorganic Passivation
Hatim Mohamed El-Khair, XU Ling, CHEN Kun-Ji, MA Yi, ZHANG Yu, LI Ming-Hai, HUANG Xin-Fan
State Key Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093
Improved Luminescence Properties and Thermal Stability of ZnS
Quantum Dots by Organic and Inorganic Passivation
Hatim Mohamed El-Khair;XU Ling;CHEN Kun-Ji;MA Yi;ZHANG Yu;LI Ming-Hai;HUANG Xin-Fan
State Key Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093
关键词 ：
71.55.Gs ,
78.55.Et ,
81.65.Rv
Abstract ： ZnS quantum dots (QDs) synthesized in water and ethanol solutions were coated with polystyrene (PS) and SiO2 shells, respectively. The band edge emission was enhanced by nearly five times after PS coating and about 13 times after SiO2 coating, because the surface trap states were removed. From the photoluminescence properties of ZnS QDs coated with PS and SiO2 shells we have detected the improvement of thermal stability. This is due to the fact that the surface passivation can prevent the further growth of the ZnS QDs and the diffusion of oxygen on the surface of ZnS QDs during thermal oxidation.
Key words ：
71.55.Gs
78.55.Et
81.65.Rv
出版日期: 2002-07-01
引用本文:
Hatim Mohamed El-Khair;XU Ling;CHEN Kun-Ji;MA Yi;ZHANG Yu;LI Ming-Hai;HUANG Xin-Fan. Improved Luminescence Properties and Thermal Stability of ZnS
Quantum Dots by Organic and Inorganic Passivation[J]. 中国物理快报, 2002, 19(7): 967-969.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y2002/V19/I7/967
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2002, Vol. 19 
