Improved performance of blue phosphorescent organic light-emitting diodes with a mixed host system

Jonghee Lee; Jeong Ik Lee; Jun Yeob Lee; Hye Yong Chu

doi:10.1063/1.3276075

Improved performance of blue phosphorescent organic light-emitting diodes with a mixed host system

Jonghee Lee, Jeong Ik Lee, Jun Yeob Lee, Hye Yong Chu

Research output: Contribution to journal › Article › peer-review

67 Scopus citations

Abstract

We have investigated a relationship between device performances and host properties in the emissive layer (EML) of iridium(III) bis(4′, 6′ -difluorophenylpyridinato)tetrakis(1-pyrazolyl)borate doped blue phosphorescent organic light-emitting diodes (PHOLEDs). We found that the recombination zone as well as charge carrier injection properties of the EML could be systematically engineered through a mixed host system. Therefore, light-emitting performances of blue PHOLEDs were greatly improved with external quantum and power efficiencies of 20.5% and 43.5 lm/W at a luminance of 56 cd/ m², respectively.

Original language	English
Article number	253304
Journal	Applied Physics Letters
Volume	95
Issue number	25
DOIs	https://doi.org/10.1063/1.3276075
State	Published - 2009
Externally published	Yes

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10.1063/1.3276075

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title = "Improved performance of blue phosphorescent organic light-emitting diodes with a mixed host system",

abstract = "We have investigated a relationship between device performances and host properties in the emissive layer (EML) of iridium(III) bis(4′, 6′ -difluorophenylpyridinato)tetrakis(1-pyrazolyl)borate doped blue phosphorescent organic light-emitting diodes (PHOLEDs). We found that the recombination zone as well as charge carrier injection properties of the EML could be systematically engineered through a mixed host system. Therefore, light-emitting performances of blue PHOLEDs were greatly improved with external quantum and power efficiencies of 20.5\% and 43.5 lm/W at a luminance of 56 cd/ m2, respectively.",

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year = "2009",

doi = "10.1063/1.3276075",

language = "English",

volume = "95",

journal = "Applied Physics Letters",

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T1 - Improved performance of blue phosphorescent organic light-emitting diodes with a mixed host system

AU - Lee, Jonghee

AU - Lee, Jeong Ik

AU - Lee, Jun Yeob

AU - Chu, Hye Yong

PY - 2009

Y1 - 2009

N2 - We have investigated a relationship between device performances and host properties in the emissive layer (EML) of iridium(III) bis(4′, 6′ -difluorophenylpyridinato)tetrakis(1-pyrazolyl)borate doped blue phosphorescent organic light-emitting diodes (PHOLEDs). We found that the recombination zone as well as charge carrier injection properties of the EML could be systematically engineered through a mixed host system. Therefore, light-emitting performances of blue PHOLEDs were greatly improved with external quantum and power efficiencies of 20.5% and 43.5 lm/W at a luminance of 56 cd/ m2, respectively.

AB - We have investigated a relationship between device performances and host properties in the emissive layer (EML) of iridium(III) bis(4′, 6′ -difluorophenylpyridinato)tetrakis(1-pyrazolyl)borate doped blue phosphorescent organic light-emitting diodes (PHOLEDs). We found that the recombination zone as well as charge carrier injection properties of the EML could be systematically engineered through a mixed host system. Therefore, light-emitting performances of blue PHOLEDs were greatly improved with external quantum and power efficiencies of 20.5% and 43.5 lm/W at a luminance of 56 cd/ m2, respectively.

UR - https://www.scopus.com/pages/publications/73449085131

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DO - 10.1063/1.3276075

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VL - 95

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 25

M1 - 253304

ER -

Improved performance of blue phosphorescent organic light-emitting diodes with a mixed host system

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