Abstract:
The theory of the multiphonon and radiative recombination of a self-trapped exciton on the interface of a silicon nanocrystal in a SiO2 matrix is developed. Self-trapped excitons play a key role in the hot carrier dynamics in nanocrystals under photoexcitation. The ratio of the probabilities of the multiphonon and radiative recombination of the self-trapped exciton is estimated. The probabilities of exciton tunnel transition from the self-trapped state to a nanocrystal are calculated for nanocrystals of various sizes. The infrared range spectrum of the luminescence of the self-trapped exciton is obtained.
Citation:
A. V. Gert, I. N. Yassievich, “Radiative and nonradiative recombination of self-trapped exciton on silicon nanocrystal interface”, Pis'ma v Zh. Èksper. Teoret. Fiz., 97:2 (2013), 93–97; JETP Letters, 97:2 (2013), 87–91
de Boer W. D. A. M., de Jong E. M. L. D., Timmerman D., Gregorkiewicz T., Zhang H., Buma W.J., Poddubny A.N., Prokofiev A.A., Yassievich I.N., Phys. Rev. B, 88:15 (2013), 155304