Efficient yellow electroluminescence from a single layer of a cyclometalated iridium complex.
We report on the spectroscopic, electrochemical, and electroluminescent properties of [Ir(ppy)(2)(dtb-bpy)](+)(PF(6))(-) (ppy: 2-phenylpyridine, dtb-bpy: 4,4'-di-tert-butyl-2,2'-dipyridyl). Single-layer devices were fabricated and found to emit yellow light with a brightness that exceeds 300 cd/m(2) and a luminous power efficiency that exceeds 10 Lm/W at just 3 V. The PF(6)(-) space charge was found to dominate the device characteristics.
Slinker
Jason D
JD
Department of Materials Science and Engineering, Cornell University, Ithaca, New York 14853, USA.
Gorodetsky
Alon A
AA
Lowry
Michael S
MS
Wang
Jingjing
J
Parker
Sara
S
Rohl
Richard
R
Bernhard
Stefan
S
Malliaras
George G
GG