Influence of exciton lifetime on charge carrier dynamics in an organic heterostructure

被引：2
|
作者：
Agrawal, Kanika L. [1 ,2 ]
Sykes, Matthew E. [1 ,2 ]
An, Kwang Hyup [3 ,4 ]
Frieberg, Bradley [5 ]
Green, P. F. [1 ,2 ]
Shtein, Max [1 ,2 ]
机构：
[1] Univ Michigan, Dept Mat Sci & Engn, Ann Arbor, MI 48109 USA
[2] Univ Michigan, Ctr Solar & Thermal Energy Convers, DOE Energy Frontiers Res Ctr, Ann Arbor, MI 48109 USA
[3] Univ Michigan, Dept Mech Engn, Ann Arbor, MI 48109 USA
[4] GE Global Res, Niskayuna, NY 12309 USA
[5] Univ Michigan, Dept Macromol Sci & Engn, Ann Arbor, MI 48109 USA
来源：
APPLIED PHYSICS LETTERS | 2013年 / 102卷 / 11期
基金：
美国国家科学基金会;
关键词：
LIGHT-EMITTING DEVICES; HIGH-CURRENT DENSITY; ELECTROLUMINESCENT DEVICES; DIODES; FLUORESCENCE; TRANSPORT; INJECTION; MOLECULE; SINGLET;
D O I：
10.1063/1.4795523
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Interactions between charge carriers and excitons, as well as between excitons and optical cavity modes in organic optoelectronic devices are fundamental to their operational limits and chief in preventing the realization of certain phenomena, such as electrically pumped organic lasing. We uncovered a previously unreported phenomenon, wherein optical cavity-modulated exciton decay rate leads to a concomitant modulation in the electrical current of an archetypal NPD/Alq(3) organic light emitting device operated in forward bias. The magnitude of this variation is sensitive to the local dielectric environment of the device and is found to be as large as 15%. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4795523]
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页数：4
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