Highly efficient organic light-emitting diodes with a silole-based compound
Article 2002 en
Authors
HC
H. Y. Chen
JL
Jacky W. Y. Lam
JL
Jingdong Luo
Abstract
1 min read
Efficient light emission was obtained in a silole-based organic light-emitting diode. A high luminous current efficiency of 20 cd/A, corresponding to an external quantum efficiency of 8%, was achieved. The apparent violation of the upper theoretical limit of 5.5% for the external quantum efficiency of a singlet emitter is discussed. With a suitably designed cathode, a high power efficiency of ∼14 lm/W was obtained. A strong dependence of the power efficiency on the thickness of Alq3 layer is also observed and explained.
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