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P‐161: White Organic Light‐emitting Diodes with Nearly 100% Internal Quantum Efficiency
Author(s) -
Seo Ji Hoon,
Park Jung Sun,
Lee Seok Jae,
Koo Ja Ryong,
Seo Bo Min,
Kim Young Kwan,
Hwang Jang Hwan,
Lee Kum Hee,
Park Jung Keun,
Yoon Seung Soo
Publication year - 2010
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 - 10.1889/1.3500368
Subject(s) - iridium , phosphorescence , quantum efficiency , benzimidazole , tris , oled , diode , chemistry , luminous efficacy , photochemistry , materials science , optoelectronics , layer (electronics) , fluorescence , physics , optics , organic chemistry , catalysis , biochemistry
The authors demonstrated white organic light‐emitting diodes (WOLED) with 100% internal quantum efficiency using all phosphorescent emitters for blue, green, and red, such as iridium(III) bis[(5‐cyano‐4‐fluorophenyl)pyridinato‐N,C 2 ’]picolinate, fac‐tris(2‐phenylpyridine)iridium, and iridium(III) bis(2‐phenylquinoline) acetylacetonate, respectively. The optimized WOLED with electron transporitng layer, 2′,2″‐(1,3,5‐benzinetriyl)‐tris(1‐phenyl‐1‐H‐benzimidazole), exhibits an external quantum efficiency of nearly 19.5%, a power efficiency of 39.2 lm W −1 , and a minimal change with δ Commission Internationale de I'Eclairage coordinates of ±(0.02, 0.00) from 100 to 10 000 cd m −2 , respectively.