Premium
47.3: Highly Efficient Fluorescent Deep Blue Dopant for “Super Top Emission” Device
Author(s) -
Funahashi Masakazu,
Yamamoto Hiroshi,
Yabunouchi Nobuhiro,
Fukuoka Kenichi,
Kuma Hitoshi,
Hosokawa Chishio,
Kambe Emiko,
Yoshinaga Tadahiko,
Fukuda Toshihiro,
Kijima Yasunori
Publication year - 2008
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 - 10.1889/1.3069764
Subject(s) - chromaticity , dopant , fluorescence , quantum efficiency , optoelectronics , limit (mathematics) , materials science , optics , doping , physics , mathematics , mathematical analysis
We successfully synthesized a new excellent fluorescent deep blue dopant BD‐4. The bottom emission device with BD‐4 has a good color coordinate in CIE 1931 chromaticity of (0.140, 0.133) with high current efficiency of 6.46cd/A. BD‐4 gives us better performance with current efficiency of 3.9cd/A with CIE chromaticity of (0.133,0.065) with the optimization for our “Super Top Emission” device structure. The internal quantum efficiency of this device is 28.5% which is beyond across the theoretical limit.