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Phosphine oxide mod...
Phosphine oxide modulator-ameliorated hole injection for blue perovskite light-emitting diodes
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- Fan, Xiangyang (author)
- Pukyong Natl Univ, South Korea
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- Wang, Yu (author)
- Linköpings universitet,Elektroniska och fotoniska material,Tekniska fakulteten
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- Shen, Xinyu (author)
- Sungkyunkwan Univ SKKU, South Korea; Univ Oxford, England
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- Yu, Zhongkai (author)
- Sungkyunkwan Univ SKKU, South Korea
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- Jeong, Woo Hyeon (author)
- Sungkyunkwan Univ SKKU, South Korea
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- Jang, Ji Won (author)
- Hanyang Univ, South Korea
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- Kim, Yeong Gyeong (author)
- Pukyong Natl Univ, South Korea
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- Woo, Seung-Je (author)
- Seoul Natl Univ, South Korea
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- Ahn, Hyungju (author)
- POSTECH, South Korea
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- Choi, Hyosung (author)
- Hanyang Univ, South Korea
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- Lee, Tae-Woo (author)
- Seoul Natl Univ, South Korea
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- Park, Sung Heum (author)
- Pukyong Natl Univ, South Korea
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- Gao, Feng (author)
- Linköpings universitet,Elektroniska och fotoniska material,Tekniska fakulteten
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- Lee, Bo Ram (author)
- Sungkyunkwan Univ SKKU, South Korea
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(creator_code:org_t)
- ROYAL SOC CHEMISTRY, 2023
- 2023
- English.
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In: Journal of Materials Chemistry A. - : ROYAL SOC CHEMISTRY. - 2050-7488 .- 2050-7496. ; 11:38, s. 20808-20815
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Despite the enormous developments in perovskite light-emitting diodes (PeLEDs) recently, obtaining efficient blue PeLEDs is still considered a critical challenge due to the non-radiative recombination and unbalanced charge injection caused by the unmatched carrier mobility and the deep hole-injection barrier between the hole-transport layer (HTL) and the emissive layer (EML). Herein, we incorporate tris(4-trifluoromethylphenyl)phosphine oxide (TMFPPO), obtained through a facile oxidation synthesis process, into poly(9-vinylcarbazole) (PVK). TMFPPO incorporation modulated the energy level and hole mobility of the binary-blend HTLs to eliminate the hole-injection barrier and balance the charge injection within the EML. Consequently, the blue PeLEDs with blended HTL presented an external quantum efficiency (EQE) of 7.23% centred at 477 nm, which was much higher than the EQE of a PVK device (4.95%). Our results demonstrate that modulating the energy level and charge injection of the HTL in the device is a promising method for obtaining efficient blue PeLEDs. TMFPPO is developed and incorporated into PVK to modulate the hole mobility and energy level of the hole-transport layer, giving rise to a barrier-free blue perovskite light-emitting diode and an enhancement of the EQE from 4.95 to 7.23% at 477 nm.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Naturresursteknik -- Energisystem (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Environmental Engineering -- Energy Systems (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Fan, Xiangyang
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Wang, Yu
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Shen, Xinyu
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Yu, Zhongkai
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Jeong, Woo Hyeon
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Jang, Ji Won
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Kim, Yeong Gyeon ...
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Woo, Seung-Je
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Ahn, Hyungju
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Choi, Hyosung
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Lee, Tae-Woo
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Park, Sung Heum
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Gao, Feng
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Lee, Bo Ram
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- About the subject
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- ENGINEERING AND TECHNOLOGY
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ENGINEERING AND ...
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and Environmental En ...
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and Energy Systems
- Articles in the publication
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Journal of Mater ...
- By the university
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Linköping University