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High-efficiency orange and yellow organic light-emitting devices using platinum(II) complexes containing extended π-conjugated cyclometalated ligands as dopant materials

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6 Author(s)
Yan, Bei-Ping ; Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, China; HKU-CAS Joint Laboratory on New Materials, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, China; and Nanotechnology Research Laboratory, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, China ; Cheung, Cecil C.C. ; Kui, Steven C.F. ; Roy, V.A.L.
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Two luminescent platinum(II) complexes 1 and 2 containing extended π-conjugated cyclometalated ligands have been used as dopant materials for the construction of two high-efficiency organic light-emitting devices I and II. Device I (containing dopant 1) emits orange emission and exhibits a maximum external quantum efficiency of 12.4%, a maximum luminous efficiency of 32.3 cd/A, and a maximum power efficiency of 11.2 lm/W. Device II (containing dopant 2) emits yellow light and exhibits a maximum external quantum efficiency of 16.1%, a maximum luminous efficiency of 51.8 cd/A, and a maximum power efficiency of 23.2 lm/W.

Published in:

Applied Physics Letters  (Volume:91 ,  Issue: 6 )