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P‐159: Efficient Red Electroluminescent Devices Based on Inter‐Ligand Energy Transfer of Heteroleptic Tris‐Cyclometalated Iridium Complexes
Author(s) -
Seo Ji Hyun,
Park Gui Yun,
Kim Young Sik,
Kim Young Kwan,
Kim You Hyun,
Kim Woo Young
Publication year - 2007
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1889/1.2785427
Subject(s) - iridium , intramolecular force , photochemistry , electroluminescence , chemistry , quenching (fluorescence) , excited state , ligand (biochemistry) , phosphorescence , tris , luminescence , energy transfer , fluorescence , materials science , optoelectronics , stereochemistry , organic chemistry , catalysis , physics , biochemistry , receptor , layer (electronics) , quantum mechanics , molecular physics , nuclear physics
Red heteroleptic tris‐cyclometalated iridium complex, Ir(ppy) 2 (dpq‐3‐F), have been characterized. When Ir(ppy) 2 (dpq‐3‐F) is placed in the excited state, the excitation energy is quickly intramolecular transferred from two ppy to one luminescent dpq‐3‐F. Thus, Ir(ppy) 2 (dpq‐3‐F) shows emission at 620nm from dpq‐3‐F. The device with Ir(ppy) 2 (dpq‐3‐F) showed superior electrical characteristics by decreasing self‐quenching.