Title of article
Luminescence blinking in Eu3+ doped yttrium oxysulfide (Y2O2S:Eu3+) quantum-dot ensembles: Photo-assisted relaxation of surface state(s)
Author/Authors
Nakkiran، نويسنده , , A. and Thirumalai، نويسنده , , J. and Jagannathan، نويسنده , , R.، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2007
Pages
7
From page
155
To page
161
Abstract
Ensembles of Y2O2S:Eu3+ widegap semiconductor nano-crystals exhibit ON–OFF fluorescence blinking phenomenon, which mimic II–VI semiconductor quantum-structures. Attempt has been made to explain this phenomenon under the ambit of diffusion controlled electron transfer (DCET) model. Insights derived using opto-impedance technique in conjunction with the DCET model clearly establish the relaxation of surface state(s) through a diffusion process. Ensembles of Y2O3:Eu3+ nano-crystals, the insulating counterpart investigated for comparison does not show such fluorescence blinking.
Journal title
Chemical Physics Letters
Serial Year
2007
Journal title
Chemical Physics Letters
Record number
1921359
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