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 › 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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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

@article{e252205833a147cc9b79ca7026b0ec3c,

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",

note = "Z.-Y.X and B.-H.Z are financially supported by the National Natural Science Foundation of China (no. 51103147 and 51273193) and 973 Project of Ministry of Science and Technology of China (2009CB623602). The financial support from the Science and Technology Development Project of Jilin Province (201105029) is also acknowledged. W.-Y.W. thanks the University Grants Committee Areas of Excellence Scheme (AoE/P-03/08), the General Research Fund (HKBU202410) from the Hong Kong Research Grants Council and The Science, Technology and Innovation Committee of Shenzhen Municipality (JCYJ20120829154440583) for financial support.",

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 › 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

N1 - Z.-Y.X and B.-H.Z are financially supported by the National Natural Science Foundation of China (no. 51103147 and 51273193) and 973 Project of Ministry of Science and Technology of China (2009CB623602). The financial support from the Science and Technology Development Project of Jilin Province (201105029) is also acknowledged. W.-Y.W. thanks the University Grants Committee Areas of Excellence Scheme (AoE/P-03/08), the General Research Fund (HKBU202410) from the Hong Kong Research Grants Council and The Science, Technology and Innovation Committee of Shenzhen Municipality (JCYJ20120829154440583) for financial support.

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 - Journal article

AN - SCOPUS:84883227214

SN - 2050-7526

VL - 1

SP - 4933

EP - 4939

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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