Visible luminescence mechanism in nano ZnO under weak confinement regime

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Visible luminescence mechanism in nano ZnO under weak confinement regime

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Title: Visible luminescence mechanism in nano ZnO under weak confinement regime
Author: V P N Nampoori; Litty, Irimpan; Radhakrishnan, P
Abstract: We describe the structure of luminescence spectrum in the visible region in nano-ZnO in colloidal and thin film forms under weak confinement regime by modeling the transition from excited state energy levels of excitons to their ground state. Measurements on nanocrystallites indicate the presence of luminescence due to excitonic emissions when excited with 255 nm. The relevant energy levels showing the transitions corresponding to the observed peaks in the emission spectrum of ZnO of particle size 18 nm are identified.
URI: http://dyuthi.cusat.ac.in/xmlui/purl/2048
Date: 2008


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