A model for steady-state luminescence of localized-state ensemble

Q. Li; S. J. Xu; M. H. Xie; S. Y. Tong

doi:10.1209/epl/i2005-10170-7

A model for steady-state luminescence of localized-state ensemble

Q. Li
, S. J. Xu
, M. H. Xie
, S. Y. Tong

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

128 Citations (Scopus)

Abstract

A distribution function for localized carriers, f (E, T) = 1/ _e(E-E_a)/k_BT+τtr / τr, is obtained 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. © EDP Sciences.

Original language	English
Pages (from-to)	994-1000
Journal	Europhysics Letters
Volume	71
Issue number	6
DOIs	https://doi.org/10.1209/epl/i2005-10170-7
Publication status	Published - 15 Sept 2005
Externally published	Yes

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Funding

This work was supported by the HK RGC Grants (No. HKU 7036/03P; HKU 7049/04P), HKU Research Grants (No. 10204008), and partially supported by HK RGC Grants (No. HKU 7118/02P).

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RGC-funded

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title = "A model for steady-state luminescence of localized-state ensemble",

abstract = "A distribution function for localized carriers, f (E, T) = 1/ e(E-Ea)/kBT+τtr / τr, is obtained 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. {\textcopyright} EDP Sciences.",

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AU - Xu, S. J.

AU - Xie, M. H.

AU - Tong, S. Y.

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2005/9/15

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N2 - A distribution function for localized carriers, f (E, T) = 1/ e(E-Ea)/kBT+τtr / τr, is obtained 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. © EDP Sciences.

AB - A distribution function for localized carriers, f (E, T) = 1/ e(E-Ea)/kBT+τtr / τr, is obtained 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. © EDP Sciences.

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U2 - 10.1209/epl/i2005-10170-7

DO - 10.1209/epl/i2005-10170-7

M3 - RGC 21 - Publication in refereed journal

SN - 0295-5075

VL - 71

SP - 994

EP - 1000

JO - Europhysics Letters

JF - Europhysics Letters

IS - 6

ER -

A model for steady-state luminescence of localized-state ensemble

Abstract

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