Triplet-to-Singlet Exciton Formation in poly(-phenylene-vinylene) Light-Emitting Diodes
- 23 January 2003
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 90 (3), 036601
- https://doi.org/10.1103/physrevlett.90.036601
Abstract
[[abstract]]©2003 APS - The triplet to singlet exciton formation ratio in a MEH-PPV light-emitting diode is measured by comparing the triplet-induced absorptions with optical and electric excitations at the 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-independent value 3 at intermediate field but is reduced to about 2 for higher field.[[fileno]]2020116010086[[department]]化學工程學This publication has 14 references indexed in Scilit:
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