High efficiency nondoped deep-blue organic light emitting devices based on imidazole-π-triphenylamine derivatives

Ying Zhang; Shiu-Lun Lai; Qing-Xiao Tong; Ming-Fai Lo; Tsz-Wai Ng; Mei-Yee Chan; Zhi-Chun Wen; Jun He; Kc-Sham Jeff; Xiang-Lin Tang; Wei-Min Liu; Chi-Chiu Ko; Peng-Fei Wang; Chun-Sing Lee

doi:10.1021/cm201789u

High efficiency nondoped deep-blue organic light emitting devices based on imidazole-π-triphenylamine derivatives

Ying Zhang, Shiu-Lun Lai, Qing-Xiao Tong, Ming-Fai Lo, Tsz-Wai Ng, Mei-Yee Chan, Zhi-Chun Wen, Jun He, Kc-Sham Jeff, Xiang-Lin Tang, Wei-Min Liu, Chi-Chiu Ko, Peng-Fei Wang, Chun-Sing Lee

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

341 Citations (Scopus)

Abstract

High-performance deep-blue emitting phenanthroimidazole derivatives with a structure of donor-linker-acceptor were designed and synthesized. By using different linkers and different linking positions, four deep-blue emitters were obtained and used as emitters or bifunctional hole-transporting emitters in OLEDs. Such devices show low turn-on voltages (as low as 2.8 V), high efficiency (2.63 cd/A, 2.53 lm/W, 3.08%), little efficiency roll-off at high current densities, and stable deep-blue emissions with CIE _y <0.10. Performances are among the best comparing to recently reported deep-blue emitting devices with similar structures. The results suggest that the combination of the phenanthroimidazole and the donor-linker-acceptor structure can be an important approach for developing high performance deep-blue emitters in particular for lighting applications. © 2011 American Chemical Society.

Original language	English
Pages (from-to)	61-70
Journal	Chemistry of Materials
Volume	24
Issue number	1
DOIs	https://doi.org/10.1021/cm201789u
Publication status	Published - 10 Jan 2012

Research Keywords

deep-blue organic light emitting devices
high efficiency
nondoped

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title = "High efficiency nondoped deep-blue organic light emitting devices based on imidazole-π-triphenylamine derivatives",

abstract = "High-performance deep-blue emitting phenanthroimidazole derivatives with a structure of donor-linker-acceptor were designed and synthesized. By using different linkers and different linking positions, four deep-blue emitters were obtained and used as emitters or bifunctional hole-transporting emitters in OLEDs. Such devices show low turn-on voltages (as low as 2.8 V), high efficiency (2.63 cd/A, 2.53 lm/W, 3.08%), little efficiency roll-off at high current densities, and stable deep-blue emissions with CIE y <0.10. Performances are among the best comparing to recently reported deep-blue emitting devices with similar structures. The results suggest that the combination of the phenanthroimidazole and the donor-linker-acceptor structure can be an important approach for developing high performance deep-blue emitters in particular for lighting applications. {\textcopyright} 2011 American Chemical Society.",

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author = "Ying Zhang and Shiu-Lun Lai and Qing-Xiao Tong and Ming-Fai Lo and Tsz-Wai Ng and Mei-Yee Chan and Zhi-Chun Wen and Jun He and Kc-Sham Jeff and Xiang-Lin Tang and Wei-Min Liu and Chi-Chiu Ko and Peng-Fei Wang and Chun-Sing Lee",

year = "2012",

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doi = "10.1021/cm201789u",

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T1 - High efficiency nondoped deep-blue organic light emitting devices based on imidazole-π-triphenylamine derivatives

AU - Zhang, Ying

AU - Lai, Shiu-Lun

AU - Tong, Qing-Xiao

AU - Lo, Ming-Fai

AU - Ng, Tsz-Wai

AU - Chan, Mei-Yee

AU - Wen, Zhi-Chun

AU - He, Jun

AU - Jeff, Kc-Sham

AU - Tang, Xiang-Lin

AU - Liu, Wei-Min

AU - Ko, Chi-Chiu

AU - Wang, Peng-Fei

AU - Lee, Chun-Sing

PY - 2012/1/10

Y1 - 2012/1/10

N2 - High-performance deep-blue emitting phenanthroimidazole derivatives with a structure of donor-linker-acceptor were designed and synthesized. By using different linkers and different linking positions, four deep-blue emitters were obtained and used as emitters or bifunctional hole-transporting emitters in OLEDs. Such devices show low turn-on voltages (as low as 2.8 V), high efficiency (2.63 cd/A, 2.53 lm/W, 3.08%), little efficiency roll-off at high current densities, and stable deep-blue emissions with CIE y <0.10. Performances are among the best comparing to recently reported deep-blue emitting devices with similar structures. The results suggest that the combination of the phenanthroimidazole and the donor-linker-acceptor structure can be an important approach for developing high performance deep-blue emitters in particular for lighting applications. © 2011 American Chemical Society.

AB - High-performance deep-blue emitting phenanthroimidazole derivatives with a structure of donor-linker-acceptor were designed and synthesized. By using different linkers and different linking positions, four deep-blue emitters were obtained and used as emitters or bifunctional hole-transporting emitters in OLEDs. Such devices show low turn-on voltages (as low as 2.8 V), high efficiency (2.63 cd/A, 2.53 lm/W, 3.08%), little efficiency roll-off at high current densities, and stable deep-blue emissions with CIE y <0.10. Performances are among the best comparing to recently reported deep-blue emitting devices with similar structures. The results suggest that the combination of the phenanthroimidazole and the donor-linker-acceptor structure can be an important approach for developing high performance deep-blue emitters in particular for lighting applications. © 2011 American Chemical Society.

KW - deep-blue organic light emitting devices

KW - high efficiency

KW - nondoped

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U2 - 10.1021/cm201789u

DO - 10.1021/cm201789u

M3 - RGC 21 - Publication in refereed journal

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JF - Chemistry of Materials

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ER -

High efficiency nondoped deep-blue organic light emitting devices based on imidazole-π-triphenylamine derivatives

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Research Keywords

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