De novo design of silicon-bridged molecule towards a bipolar host: All-phosphor white organic light-emitting devices exhibiting high efficiency and low efficiency roll-off

Shaolong Gong; Yonghua Chen; Chuluo Yang; Cheng Zhong; Jingui Qin; Dongge Ma

doi:10.1002/adma.201002732

De novo design of silicon-bridged molecule towards a bipolar host: All-phosphor white organic light-emitting devices exhibiting high efficiency and low efficiency roll-off

Shaolong Gong, Yonghua Chen, Chuluo Yang, Cheng Zhong, Jingui Qin, Dongge Ma

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

150 Scopus citations

Abstract

A molecular design strategy for a bipolar host material is demonstrated by incorporating both electron donor and electron acceptor into a silicon-bridged structure. A two-color, all phosphor and single-emitting-layer white OLED hosted by the new bipolar compound p-BISiTPA is fabricated. The device displays a high efficiency, with η_{c, max} of 51.8 cd A^-1, η _{p, max} of 42.7 lm W^-1 and η_{ext, max} of 19.1%. Furthermore, the η_ext is still as high as 17.4% at the luminance of 1000 cd m^-2, with a rather low roll-off value of 8.9%.

Original language	English
Pages (from-to)	5370-5373
Number of pages	4
Journal	Advanced Materials
Volume	22
Issue number	47
DOIs	https://doi.org/10.1002/adma.201002732
State	Published - 14 Dec 2010
Externally published	Yes

Keywords

Bipolar host
Phosphorescence
Silicon-bridged molecule
White OLEDs

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10.1002/adma.201002732

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abstract = "A molecular design strategy for a bipolar host material is demonstrated by incorporating both electron donor and electron acceptor into a silicon-bridged structure. A two-color, all phosphor and single-emitting-layer white OLED hosted by the new bipolar compound p-BISiTPA is fabricated. The device displays a high efficiency, with ηc, max of 51.8 cd A-1, η p, max of 42.7 lm W-1 and ηext, max of 19.1%. Furthermore, the ηext is still as high as 17.4% at the luminance of 1000 cd m-2, with a rather low roll-off value of 8.9%.",

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T1 - De novo design of silicon-bridged molecule towards a bipolar host

T2 - All-phosphor white organic light-emitting devices exhibiting high efficiency and low efficiency roll-off

AU - Gong, Shaolong

AU - Chen, Yonghua

AU - Yang, Chuluo

AU - Zhong, Cheng

AU - Qin, Jingui

AU - Ma, Dongge

PY - 2010/12/14

Y1 - 2010/12/14

N2 - A molecular design strategy for a bipolar host material is demonstrated by incorporating both electron donor and electron acceptor into a silicon-bridged structure. A two-color, all phosphor and single-emitting-layer white OLED hosted by the new bipolar compound p-BISiTPA is fabricated. The device displays a high efficiency, with ηc, max of 51.8 cd A-1, η p, max of 42.7 lm W-1 and ηext, max of 19.1%. Furthermore, the ηext is still as high as 17.4% at the luminance of 1000 cd m-2, with a rather low roll-off value of 8.9%.

AB - A molecular design strategy for a bipolar host material is demonstrated by incorporating both electron donor and electron acceptor into a silicon-bridged structure. A two-color, all phosphor and single-emitting-layer white OLED hosted by the new bipolar compound p-BISiTPA is fabricated. The device displays a high efficiency, with ηc, max of 51.8 cd A-1, η p, max of 42.7 lm W-1 and ηext, max of 19.1%. Furthermore, the ηext is still as high as 17.4% at the luminance of 1000 cd m-2, with a rather low roll-off value of 8.9%.

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KW - Phosphorescence

KW - Silicon-bridged molecule

KW - White OLEDs

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De novo design of silicon-bridged molecule towards a bipolar host: All-phosphor white organic light-emitting devices exhibiting high efficiency and low efficiency roll-off

Abstract

Keywords

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