Thermally activated population of microcavity polariton states under optical and electrical excitation

被引：5

作者：

Lodden, Grant H. ^{[1
]}

Holmes, Russell J. ^{[1
]}

机构：

[1] Univ Minnesota, Dept Chem Engn & Mat Sci, Minneapolis, MN 55455 USA

来源：

PHYSICAL REVIEW B | 2011年 / 83卷 / 07期

关键词：

ORGANIC SEMICONDUCTOR MICROCAVITIES; LIGHT-EMITTING-DIODES; ROOM-TEMPERATURE; QUANTUM MICROCAVITY; EXCITON; EMISSION; PHOTOLUMINESCENCE; RELAXATION;

D O I：

10.1103/PhysRevB.83.075301

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We examine the luminescence from optical microcavities containing an organic semiconductor in the regime of strong exciton-photon coupling. The ratio of luminescence from the upper polariton branch to the lower polariton branch is studied as a function of microcavity detuning and temperature under both optical and electrical excitation. The population of the upper polariton branch is modeled by means of thermal activation from an uncoupled exciton reservoir. Here, the activation energy for the population of the upper polariton branch is equal to the energetic separation between the exciton reservoir and the upper branch at the angle of detection. Agreement is obtained with this model under both optical and electrical excitation using measurements of angle-resolved microcavity reflectivity and luminescence.

引用

页数：9

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