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Observation of suppressed Auger mechanism in type-I quantum well structures with delocalized electron-hole wavefunctions
15.F. García-Santamaría, S. Brovelli, R. Viswanatha, J.A. Hollingsworth, H. Htoon, S.A. Crooker, and V. I. Klimov, Nano. Lett. 11, 687 (2011).
20.P. K. Basu, Theory of Optical Processes in Semiconductors: Bulk and Microstructures: Bulk and Microstructures (Oxford University Press, 1997).
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We report the first observation of non-threshold Auger mechanism for a quantum well structure with Type-I band alignment. Excitation-dependent photoluminescence measurements were used to extract the Auger recombination coefficients from 77 K up to room temperature. The results verify the role of interface mediated momentum exchange as well as suppression of Auger recombination for delocalized electron-hole wavefunctions.
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