Interfacial triplet confinement for achieving efficient solution-processed deep-blue and white electrophosphorescent devices with underestimated poly(N-vinylcarbazole) as the host

Baohua Zhang; Lihui Liu; Guiping Tan; Bing Yao; Cheuk Lam HO; Shumeng Wang; Junqiao Ding; Zhiyuan Xie; Wai Yeung WONG; Lixiang Wang

doi:10.1039/c3tc30912f

Interfacial triplet confinement for achieving efficient solution-processed deep-blue and white electrophosphorescent devices with underestimated poly(N-vinylcarbazole) as the host

Baohua Zhang, Lihui Liu, Guiping Tan, Bing Yao, Cheuk Lam HO, Shumeng Wang, Junqiao Ding, Zhiyuan Xie^*, Wai Yeung WONG, Lixiang Wang

^*Corresponding author for this work

Department of Chemistry

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

36 Citations (Scopus)

Abstract

Highly efficient deep-blue and white PhOLEDs with FIr6 as a blue emitter and PVK as a host are developed by using a high triplet level interfacial layer to confine triplet excitons within the emissive layer. Incorporation of an interfacial layer with a higher triplet level such as TPCz can effectively cut off the potential loss pathways of the triplet excitons within the PVK:FIr6 emissive layer. The resultant PVK:FIr6-based deep-blue and white solution-processed PhOLEDs exhibit an unprecedented forward-viewing EQE of 16.1% and a total EQE of 28.0% (38.4 lm W^-1) at a practical luminance of 1000 cd m^-2, respectively.

Original language	English
Pages (from-to)	4933-4939
Number of pages	7
Journal	Journal of Materials Chemistry C
Volume	1
Issue number	32
DOIs	https://doi.org/10.1039/c3tc30912f
Publication status	Published - 2013

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Chemistry(all)
Materials Chemistry

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Zhang, B., Liu, L., Tan, G., Yao, B., HO, C. L., Wang, S., Ding, J., Xie, Z., WONG, W. Y., & Wang, L. (2013). Interfacial triplet confinement for achieving efficient solution-processed deep-blue and white electrophosphorescent devices with underestimated poly(N-vinylcarbazole) as the host. Journal of Materials Chemistry C, 1(32), 4933-4939. https://doi.org/10.1039/c3tc30912f

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title = "Interfacial triplet confinement for achieving efficient solution-processed deep-blue and white electrophosphorescent devices with underestimated poly(N-vinylcarbazole) as the host",

abstract = "Highly efficient deep-blue and white PhOLEDs with FIr6 as a blue emitter and PVK as a host are developed by using a high triplet level interfacial layer to confine triplet excitons within the emissive layer. Incorporation of an interfacial layer with a higher triplet level such as TPCz can effectively cut off the potential loss pathways of the triplet excitons within the PVK:FIr6 emissive layer. The resultant PVK:FIr6-based deep-blue and white solution-processed PhOLEDs exhibit an unprecedented forward-viewing EQE of 16.1% and a total EQE of 28.0% (38.4 lm W-1) at a practical luminance of 1000 cd m-2, respectively.",

author = "Baohua Zhang and Lihui Liu and Guiping Tan and Bing Yao and HO, {Cheuk Lam} and Shumeng Wang and Junqiao Ding and Zhiyuan Xie and WONG, {Wai Yeung} and Lixiang Wang",

year = "2013",

doi = "10.1039/c3tc30912f",

language = "English",

volume = "1",

pages = "4933--4939",

journal = "Journal of Materials Chemistry C",

issn = "2050-7526",

publisher = "Royal Society of Chemistry",

number = "32",

}

Zhang, B, Liu, L, Tan, G, Yao, B, HO, CL, Wang, S, Ding, J, Xie, Z, WONG, WY & Wang, L 2013, 'Interfacial triplet confinement for achieving efficient solution-processed deep-blue and white electrophosphorescent devices with underestimated poly(N-vinylcarbazole) as the host', Journal of Materials Chemistry C, vol. 1, no. 32, pp. 4933-4939. https://doi.org/10.1039/c3tc30912f

Interfacial triplet confinement for achieving efficient solution-processed deep-blue and white electrophosphorescent devices with underestimated poly(N-vinylcarbazole) as the host. / Zhang, Baohua; Liu, Lihui; Tan, Guiping et al.

In: Journal of Materials Chemistry C, Vol. 1, No. 32, 2013, p. 4933-4939.

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

TY - JOUR

T1 - Interfacial triplet confinement for achieving efficient solution-processed deep-blue and white electrophosphorescent devices with underestimated poly(N-vinylcarbazole) as the host

AU - Zhang, Baohua

AU - Liu, Lihui

AU - Tan, Guiping

AU - Yao, Bing

AU - HO, Cheuk Lam

AU - Wang, Shumeng

AU - Ding, Junqiao

AU - Xie, Zhiyuan

AU - WONG, Wai Yeung

AU - Wang, Lixiang

PY - 2013

Y1 - 2013

N2 - Highly efficient deep-blue and white PhOLEDs with FIr6 as a blue emitter and PVK as a host are developed by using a high triplet level interfacial layer to confine triplet excitons within the emissive layer. Incorporation of an interfacial layer with a higher triplet level such as TPCz can effectively cut off the potential loss pathways of the triplet excitons within the PVK:FIr6 emissive layer. The resultant PVK:FIr6-based deep-blue and white solution-processed PhOLEDs exhibit an unprecedented forward-viewing EQE of 16.1% and a total EQE of 28.0% (38.4 lm W-1) at a practical luminance of 1000 cd m-2, respectively.

AB - Highly efficient deep-blue and white PhOLEDs with FIr6 as a blue emitter and PVK as a host are developed by using a high triplet level interfacial layer to confine triplet excitons within the emissive layer. Incorporation of an interfacial layer with a higher triplet level such as TPCz can effectively cut off the potential loss pathways of the triplet excitons within the PVK:FIr6 emissive layer. The resultant PVK:FIr6-based deep-blue and white solution-processed PhOLEDs exhibit an unprecedented forward-viewing EQE of 16.1% and a total EQE of 28.0% (38.4 lm W-1) at a practical luminance of 1000 cd m-2, respectively.

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U2 - 10.1039/c3tc30912f

DO - 10.1039/c3tc30912f

M3 - Article

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SN - 2050-7526

VL - 1

SP - 4933

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JO - Journal of Materials Chemistry C

JF - Journal of Materials Chemistry C

IS - 32

ER -

Interfacial triplet confinement for achieving efficient solution-processed deep-blue and white electrophosphorescent devices with underestimated poly(N-vinylcarbazole) as the host

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