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A model for luminescence of localized state ensemble

Q. Li·S. J. Xu·M. H. Xie·S. Y. Tong
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Abstract

A distribution function for localized carriers, $f(E,T)=\frac{1}{e^{(E-E_a)/k_BT}+τ_{tr}/τ_r}$, is proposed by solving a rate equation, in which, electrical carriers' generation, thermal escape, recapture and radiative recombination are taken into account. Based on this distribution function, a model is developed for luminescence from localized state ensemble with a Gaussian-type density of states. The model reproduces quantitatively all the anomalous temperature behaviors of localized state luminescence. It reduces to the well-known band-tail and luminescence quenching models under certain approximations.

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Q. Li, S. J. Xu, M. H. Xie, S. Y. Tong. 2004-11-05. A model for luminescence of localized state ensemble. https://doi.org/10.1209/epl%2Fi2005-10170-7

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