Crystal-Size Dependence of Optical Spectra through Radiative Decay of Excitons

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概要

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• It is predicted that the peak intensity in the absorption and luminescencesr>ectra of free excitons should decrease with increasins thickness L of a thincrvstal when the intensity' in the tail reuion is fixed. This oriuinates from the factthat the radiative deca>' of excitons, which is effective only in a narrow momentumresion inversely' rror>ortional to L, has a maximum rate r>ror>ortional to c at themomentum of free-exciton resonance. The line shape itself is rather insensitive toL. Critical sr>ectra of self-trar>r>ed excitons do not der>end on L. When the radiativedecay effect is not negligible, even these first-order spectra must be obtained inthe framework of the more general second-order optical processes. The Kramers-Kronig transformation from the reflectivity spectrum to the absorption one, andthe oscillator-strength sum rule concerning the constancy of the integratedabsorption break down.

• 社団法人日本物理学会の論文
• 1981-09-15

著者

• SUMI Atsuko

  Institute for Solid State Physics,University of Tokyo

• Sumi Atsuko

  Institute For Solid State Physics The University Of Tokyo

関連論文

• A New Phase of Exciton Polarons Intermediate between Free and Self-Trapped Ones in the F.C.C.Lattice
• The Urbach-Martienssen Rule Revisited
• Crystal-Size Dependence of Optical Spectra through Radiative Decay of Excitons
• Theoty of Resonance Raman Scattering and Luminescence of Exciton in Self-Trapping Process
• Duality in Resonance Raman Scattering

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