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Silane- and triazine-containing hole and exciton blocking material for high-efficiency phosphorescent organic light emitting diodes
Abstract
One of the important factors for high efficiency phosphorescent organic light-emitting devices is to confine triplet excitons within the emitting layer. We synthesized and characterized a new hole blocking material containing silane and triazine moieties, 2,4-diphenyl-6-(4′-triphenylsilanyl-biphenyl-4-yl)-1,3,5-triazine (DTBT). Electrophosphorescent devices fabricated using the material as the hole-blocking layer and N,N′-dicarbazolyl-4,4′-biphenyl (CBP) doped with fac-tris(2-phenylpyridine)iridium [Ir(ppy)3] as the emitting layer showed a maximum external quantum efficiency (ηext) of 17.5% with a maximum power efficiency (ηp) of 47.8 lm W−1, which are much higher than those of devices using bathcuproine (BCP) (ηext = 14.5%, ηp = 40.0 lm W−1) and 4-biphenyloxolate aluminium(III) bis(2-methyl-8-quinolinato)-4-phenylphenolate (BAlq) (ηext = 8.1%, ηp = 14.2 lm W−1) as hole-blocking layers.
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Triazine has been successfully used to connect different chromophores in metal-free organic dyes.
“Triazine (Tz) has been successfully used to connect di ff erent chromophores in metal free organic dyes.”
From Recent progress in porphyrin-based materials for organic solar cells (2018) · cites this paper as [74]
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Cited by
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Recent progress in porphyrin-based materials for organic solar cells
Mahmood, A., Hu, J.-Y., Xiao, B., Tang, A., Wang, X., & Zhou, E. (2018) · Journal of Materials Chemistry A · doi:10.1039/c8ta06392c · Cited by 311
Ren, S., Zeng, D., Zhong, H., Wang, Y., Qian, S., & Fang, Q. (2010) · The Journal of Physical Chemistry B · doi:10.1021/jp104710y · Cited by 97
New Optoelectronic Materials Based on Bitriazines: Synthesis and Properties
Zhong, H., Xu, E., Zeng, D., Du, J., Sun, J., Ren, S., Jiang, B., & Fang, Q. (2008) · Organic Letters · doi:10.1021/ol702698r · Cited by 70
Metadata
- Authors
- Kang, J.-W., Lee, D.-S., Park, H.-D., Park, Y.-S., Kim, J. W., Jeong, W.-I., Yoo, K.-M., Go, K., Kim, S.-H., & Kim, J.-J.
- Affiliations
- Seoul National University (KR)
- Corresponding author
- Kim, Jang-Joo
- Venue
- Journal of Materials Chemistry
- Publisher
- Royal Society of Chemistry (RSC)
- Published
- 2007
- Volume
- 17
- Issue
- 35
- Pages
- 3714
- ISSN
- 0959-9428 (ISSN-L)
- 1364-5501
- OpenAlex
- W2160047084
- Cited by
- 82
- References
- 0
- Citations by year
- 2026: 1 · 2025: 1 · 2023: 2 · 2022: 7 · 2020: 3 · 2019: 3 · 2018: 5 · 2017: 1 · 2016: 5 · 2015: 11 · 2014: 8 · 2013: 5 · 2012: 6
- FWCI
- 5.36
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of Materials Chemistry (publishedVersion)
- Seoul National University Open Repository (Seoul National University) (submittedVersion)
- Funders
- Korea Advanced Institute of Science and Technology
- Topics
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Organic Light-Emitting Diodes Research
- Physical Sciences › Materials Science › Materials Chemistry › Luminescence Properties of Advanced Materials
- Physical Sciences › Physics and Astronomy › Condensed Matter Physics › GaN-based semiconductor devices and materials
- Keywords
- hole blocking layer, exciton blocking, phosphorescent organic light-emitting diodes, external quantum efficiency, power efficiency, CBP, Ir(ppy)3, bathocuproine, BAlq, electrophosphorescence
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