Abstract
The photoluminescence, i.e., fluorescence and phosphorescence, characteristics of host materials with wide energy gaps suitable for phosphorescence-based organic light-emitting diodes (OLEDs) are summarized. In the vacuum deposited films, the host materials show phosphorescent emission in the blue to green region and triplet energy levels of ET = 2.6-3.1 eV because of the presence of steric hindrance. An OLED containing 1,2,3,4-tetraphenyl-5-(3-pyridyl)benzene as a host and iridium(III) bis[(4,6-difluorophenyl)-pyridinato-N,C2]picolinate as a blue emissive phosphorescent dopant exhibits an external electroluminescence efficiency of ∼12%.
| Original language | English |
|---|---|
| Pages (from-to) | 502051-502053 |
| Number of pages | 3 |
| Journal | Japanese journal of applied physics |
| Volume | 49 |
| Issue number | 5 PART 1 |
| DOIs | |
| Publication status | Published - May 1 2010 |
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All Science Journal Classification (ASJC) codes
- Engineering(all)
- Physics and Astronomy(all)
Cite this
Photoluminescence characteristics of organic host materials with wide energy gaps for organic electrophosphorescent devices. / Endo, Ayataka; Adachi, Chihaya.
In: Japanese journal of applied physics, Vol. 49, No. 5 PART 1, 01.05.2010, p. 502051-502053.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Photoluminescence characteristics of organic host materials with wide energy gaps for organic electrophosphorescent devices
AU - Endo, Ayataka
AU - Adachi, Chihaya
PY - 2010/5/1
Y1 - 2010/5/1
N2 - The photoluminescence, i.e., fluorescence and phosphorescence, characteristics of host materials with wide energy gaps suitable for phosphorescence-based organic light-emitting diodes (OLEDs) are summarized. In the vacuum deposited films, the host materials show phosphorescent emission in the blue to green region and triplet energy levels of ET = 2.6-3.1 eV because of the presence of steric hindrance. An OLED containing 1,2,3,4-tetraphenyl-5-(3-pyridyl)benzene as a host and iridium(III) bis[(4,6-difluorophenyl)-pyridinato-N,C2]picolinate as a blue emissive phosphorescent dopant exhibits an external electroluminescence efficiency of ∼12%.
AB - The photoluminescence, i.e., fluorescence and phosphorescence, characteristics of host materials with wide energy gaps suitable for phosphorescence-based organic light-emitting diodes (OLEDs) are summarized. In the vacuum deposited films, the host materials show phosphorescent emission in the blue to green region and triplet energy levels of ET = 2.6-3.1 eV because of the presence of steric hindrance. An OLED containing 1,2,3,4-tetraphenyl-5-(3-pyridyl)benzene as a host and iridium(III) bis[(4,6-difluorophenyl)-pyridinato-N,C2]picolinate as a blue emissive phosphorescent dopant exhibits an external electroluminescence efficiency of ∼12%.
UR - http://www.scopus.com/inward/record.url?scp=77952721462&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77952721462&partnerID=8YFLogxK
U2 - 10.1143/JJAP.49.050205
DO - 10.1143/JJAP.49.050205
M3 - Article
AN - SCOPUS:77952721462
VL - 49
SP - 502051
EP - 502053
JO - Japanese Journal of Applied Physics
JF - Japanese Journal of Applied Physics
SN - 0021-4922
IS - 5 PART 1
ER -