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American Institute of Physics, Applied Physics Letters, 4(81), p. 574

DOI: 10.1063/1.1495542

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Highly efficient organic light-emitting diodes with a silole-based compound

Journal article published in 2002 by H. Y. Chen, Chen Hy, W. Y. Lam, Lam Wy, J. D. Luo, Y. L. Ho, Ho Yl, B. Z. Tang, D. B. Zhu, M. Wong, H. S. Kwok
This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

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Abstract

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. © 2002 American Institute of Physics.