Highly efficient tris(8-hydroxyquinoline) aluminum-based organic light-emitting diodes utilized by balanced energy transfer with cosensitizing fluorescent dyes

Young Wook Park; Young Min Kim; Jin Hwan Choi; Tae Hyun Park; Jin Woo Huh; Hong Suk Kim; Min Ju Cho; Dong Hoon Choi; Byeong Kwon Ju

doi:10.1063/1.3243689

Highly efficient tris(8-hydroxyquinoline) aluminum-based organic light-emitting diodes utilized by balanced energy transfer with cosensitizing fluorescent dyes

Young Wook Park, Young Min Kim, Jin Hwan Choi, Tae Hyun Park, Jin Woo Huh, Hong Suk Kim, Min Ju Cho, Dong Hoon Choi, Byeong Kwon Ju

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

7 Citations (Scopus)

Abstract

We report on the development of highly efficient organic light-emitting diodes (OLEDs) utilized by balancing the energy transfer between multiple dopants, that is, multiple emissions from the multiple dopants were realized by balanced distributed energy transfer. From the cosensitizing fluorescent OLEDs, the peak external quantum efficiency (EQE) of 4.8% at 130 cd/ m² is demonstrated, which realized theoretical limits of ∼5.0% and means that nearly 100% of the singlet excitons are radiative. Also, the optimized device accompanying thickness-modulated electron transport layer for the enhanced light outcoupling demonstrated the highly improved peak EQE and current efficiency of 6.7%, and 23.4 cd/A.

Original language	English
Article number	143305
Journal	Applied Physics Letters
Volume	95
Issue number	14
DOIs	https://doi.org/10.1063/1.3243689
Publication status	Published - 2009

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.3243689

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Highly efficient tris(8-hydroxyquinoline) aluminum-based organic light-emitting diodes utilized by balanced energy transfer with cosensitizing fluorescent dyes. / Park, Young Wook; Kim, Young Min; Choi, Jin Hwan; Park, Tae Hyun; Huh, Jin Woo; Kim, Hong Suk; Cho, Min Ju; Choi, Dong Hoon ; Ju, Byeong Kwon.

In: Applied Physics Letters, Vol. 95, No. 14, 143305, 2009.

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

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abstract = "We report on the development of highly efficient organic light-emitting diodes (OLEDs) utilized by balancing the energy transfer between multiple dopants, that is, multiple emissions from the multiple dopants were realized by balanced distributed energy transfer. From the cosensitizing fluorescent OLEDs, the peak external quantum efficiency (EQE) of 4.8% at 130 cd/ m2 is demonstrated, which realized theoretical limits of ∼5.0% and means that nearly 100% of the singlet excitons are radiative. Also, the optimized device accompanying thickness-modulated electron transport layer for the enhanced light outcoupling demonstrated the highly improved peak EQE and current efficiency of 6.7%, and 23.4 cd/A.",

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