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Impact of noble metal nanostructures on surface trapping state of semiconductor quantum dots

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10 Author(s)
Yang, Zhenling ; Center for Condensed Matter Science and Technology, Harbin Institute of Technology, Harbin 150001, People''s Republic of China ; Wen, Yanan ; Meng, Qingkun ; Liu, Yuqiang
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The impact of noble metal nanostructures on the surface trapping state of semiconductor quantum dots was investigated by taking nanosecond time resolved photoluminescence measurements. It was observed that nonradiative resonant energy transfer from the excitonic state of quantum dots to Au nanofilm reduced the lifetime and intensity of excitonic state emission. No nonradiative resonant energy transfer from surface trapping state to Au nanofilm was observed. It is possibly implied that noble metal nanostructures have no impact on the surface trapping state of semiconductor quantum dots.

Published in:

Applied Physics Letters  (Volume:96 ,  Issue: 4 )

Date of Publication:

Jan 2010

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