Nonradiative recombination of hot photoelectrons in CdS nanocrystals embedded in glass
- 27 October 1997
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 71 (17) , 2502-2504
- https://doi.org/10.1063/1.120101
Abstract
Transient luminescence spectra are investigated in highly photoexcited CdS nanocrystals (average radii 5.4–100 nm) embedded in glass. Luminescence-intensity kinetics exhibits distortion attributed to carrier-temperature-activated nonradiative recombination due to multiphonon emission. The distortion enhances with reduced crystallite size indicating that the photomodified semiconductor-glass interface originates deep traps with localization barrier of 130 meV.Keywords
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