標題: Triplet exciton formation ratio in poly(p-phenylene-vinylene) light-emitting diode
作者: Lin, LC
Meng, HF
Shy, JT
Horng, SF
Yu, LS
Chen, CH
Liaw, HH
Huang, CC
Peng, GY
Chen, SA
物理研究所
Institute of Physics
關鍵字: triplet exciton;light-emitting-diode
公開日期: 4-四月-2003
摘要: The triplet to singlet exciton formation ratio in a poly(2-methoxy-5(2'-ethyl-hexyloxy)-1,4-phenylene vinylene) (MEH-PPV) light-emitting-diode is measured by comparing the triplet induced-absorptions with optical and electric excitations at same singlet exciton density. The ratio is a strong universal decreasing function of the averaged electric field. Using 4 ns for singlet to triplet intersystem crossing time, the ratio is significantly larger than the spin-statistics value 3 at intermediate field but is reduced to about 1 for higher field.
URI: http://dx.doi.org/10.1016/S0379-6779(02)00517-9
http://hdl.handle.net/11536/27971
ISSN: 0379-6779
DOI: 10.1016/S0379-6779(02)00517-9
期刊: SYNTHETIC METALS
Volume: 135
Issue: 1-3
起始頁: 425
結束頁: 426
顯示於類別:會議論文


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