Effects of mixed host spatial distribution on the efficiency of blue phosphorescent organic light-emitting diodes

Sangmin Lee; Ching W. Tang; Lewis J. Rothberg

doi:10.1063/1.4739499

Effects of mixed host spatial distribution on the efficiency of blue phosphorescent organic light-emitting diodes

Sangmin Lee^*, Ching W. Tang, Lewis J. Rothberg

^*Corresponding author for this work

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

17 Citations (Scopus)

Abstract

We present a systematic study of how graded-host profile in the emissive layer (EML) affects the efficiency of blue phosphorescent organic light-emitting diodes. Three sets of devices with uniformly mixed and linearly graded mixed (LGM) hosts are fabricated with iridium-(III)-bis(4,6-difluorophenyl-pyridinato- N,C2) picolinate as dopant. By varying the position of the dopant within the emissive layer, we show that the LGM architecture improves device efficiency by moving the recombination zone further from the interface thereby reducing quenching due to interactions with charges in the transport layers.

Original language	English
Article number	043303
Journal	Applied Physics Letters
Volume	101
Issue number	4
DOIs	https://doi.org/10.1063/1.4739499
Publication status	Published - 23 Jul 2012
Externally published	Yes

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title = "Effects of mixed host spatial distribution on the efficiency of blue phosphorescent organic light-emitting diodes",

abstract = "We present a systematic study of how graded-host profile in the emissive layer (EML) affects the efficiency of blue phosphorescent organic light-emitting diodes. Three sets of devices with uniformly mixed and linearly graded mixed (LGM) hosts are fabricated with iridium-(III)-bis(4,6-difluorophenyl-pyridinato- N,C2) picolinate as dopant. By varying the position of the dopant within the emissive layer, we show that the LGM architecture improves device efficiency by moving the recombination zone further from the interface thereby reducing quenching due to interactions with charges in the transport layers.",

author = "Sangmin Lee and Tang, \{Ching W.\} and Rothberg, \{Lewis J.\}",

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doi = "10.1063/1.4739499",

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volume = "101",

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T1 - Effects of mixed host spatial distribution on the efficiency of blue phosphorescent organic light-emitting diodes

AU - Lee, Sangmin

AU - Tang, Ching W.

AU - Rothberg, Lewis J.

PY - 2012/7/23

Y1 - 2012/7/23

N2 - We present a systematic study of how graded-host profile in the emissive layer (EML) affects the efficiency of blue phosphorescent organic light-emitting diodes. Three sets of devices with uniformly mixed and linearly graded mixed (LGM) hosts are fabricated with iridium-(III)-bis(4,6-difluorophenyl-pyridinato- N,C2) picolinate as dopant. By varying the position of the dopant within the emissive layer, we show that the LGM architecture improves device efficiency by moving the recombination zone further from the interface thereby reducing quenching due to interactions with charges in the transport layers.

AB - We present a systematic study of how graded-host profile in the emissive layer (EML) affects the efficiency of blue phosphorescent organic light-emitting diodes. Three sets of devices with uniformly mixed and linearly graded mixed (LGM) hosts are fabricated with iridium-(III)-bis(4,6-difluorophenyl-pyridinato- N,C2) picolinate as dopant. By varying the position of the dopant within the emissive layer, we show that the LGM architecture improves device efficiency by moving the recombination zone further from the interface thereby reducing quenching due to interactions with charges in the transport layers.

UR - https://www.webofscience.com/wos/woscc/full-record/WOS:000306944700103

UR - https://openalex.org/W2059566707

UR - https://www.scopus.com/pages/publications/84864475789

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DO - 10.1063/1.4739499

M3 - Journal Article

SN - 0003-6951

VL - 101

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 4

M1 - 043303

ER -

Effects of mixed host spatial distribution on the efficiency of blue phosphorescent organic light-emitting diodes

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