AN ANALYSIS OF ELECTRON–HOLE RECOMBINATION IN SOLID KRYPTON USING TIME-RESOLVED VUV-LUMINESCENCE SECTROSCOPY

V. Kisand, M. Kirm, S. Vielhauer and G. Zimmerer
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V. Kisand: Institute of Physics, University of Tartu, Riia 142, Tartu, 51014, Estonia
M. Kirm: II. Institut für Experimentalphysik, Universität Hamburg, Luruper Chaussee 149, Hamburg, 22761, Germany
S. Vielhauer: II. Institut für Experimentalphysik, Universität Hamburg, Luruper Chaussee 149, Hamburg, 22761, Germany
G. Zimmerer: II. Institut für Experimentalphysik, Universität Hamburg, Luruper Chaussee 149, Hamburg, 22761, Germany

Surface Review and Letters (SRL), 2002, vol. 09, issue 02, 783-788

Abstract: For the first time, the free exciton (FE) VUV-luminescence decay curves were systematically investigated in solid Kr using photoexcitation in the energy region above band gap energy. Delayed electron–hole recombination and "prompt" (in terms of the time resolution of the experimental setup) creation of secondary excitons were separated using the time-resolved experimental technique. A detailed model for the dynamics of electron–hole recombination into the FE state was developed. The delayed component of the free exciton decay curve was reproduced with model calculations, including thermalization of the carriers via scattering on acoustic phonons, and the recombination cross-section, which depends on the actual carrier temperatures. A satisfactory agreement between experiment and theory was found.

Date: 2002
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DOI: 10.1142/S0218625X02002956

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