High-Performance NaK2Li[Li3SiO4]4:Eu Green Phosphor for Backlighting Light-Emitting Diodes

Mu Huai Fang; Carl Osby M. Mariano; Kuan Chun Chen; Jia Cheng Lin; Zhen Bao; Sebastian Mahlik; Tadeusz Lesniewski; Kuang Mao Lu; Ying Rui Lu; Yu Jong Wu; Hwo Shuenn Sheu; Jyh Fu Lee; Shu Fen Hu; Ru Shi Liu; J. Paul Attfield

doi:10.1021/acs.chemmater.1c00180

High-Performance NaK₂Li[Li₃SiO₄]₄:Eu Green Phosphor for Backlighting Light-Emitting Diodes

Mu Huai Fang, Carl Osby M. Mariano, Kuan Chun Chen, Jia Cheng Lin, Zhen Bao, Sebastian Mahlik, Tadeusz Lesniewski, Kuang Mao Lu, Ying Rui Lu, Yu Jong Wu, Hwo Shuenn Sheu, Jyh Fu Lee, Shu Fen Hu, Ru Shi Liu^*, J. Paul Attfield

^*此作品的通信作者

物理學系

研究成果: 雜誌貢獻 › 期刊論文 › 同行評審

8 引文斯高帕斯（Scopus）

摘要

Narrowband green phosphors with high quantum efficiency are required for backlighting white light-emitting diode (WLED) devices. Materials from the A[Li3SiO4]4:Eu2+ family have recently been proposed as having superior properties to industry-standard β-SiAlON green phosphors. Here, we show that a cheap, easily synthesized host NaK2Li[Li3SiO4]4 (NKLLSO) doped with a mixture of Eu2+ and Eu3+ is an outstanding narrowband green phosphor, with an external quantum efficiency of 51% and superb thermal stability (97.1% of room-temperature performance at 150 °C). Structural studies reveal that green emission occurs from two Eu2+ sites, while Eu3+ introduces a high concentration of vacancies that may suppress quenching from energy transfer between Eu2+ sites. A WLED package constructed using our NKLLSO phosphor shows extremely high color vividness, competitive with a β-SiAlON comparator. This work will stimulate further research on efficient green phosphors for practical WLED devices.

原文	英語
頁（從 - 到）	1893-1899
頁數	7
期刊	Chemistry of Materials
卷	33
發行號	5
DOIs	https://doi.org/10.1021/acs.chemmater.1c00180
出版狀態	已發佈 - 2021 三月 9

ASJC Scopus subject areas

化學 (全部)
化學工程 (全部)
材料化學

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10.1021/acs.chemmater.1c00180

其它文件與鏈接

Link to publication in Scopus

引用此

Fang, M. H., Mariano, C. O. M., Chen, K. C., Lin, J. C., Bao, Z., Mahlik, S., Lesniewski, T., Lu, K. M., Lu, Y. R., Wu, Y. J., Sheu, H. S., Lee, J. F., Hu, S. F., Liu, R. S., & Attfield, J. P. (2021). High-Performance NaK₂Li[Li₃SiO₄]₄:Eu Green Phosphor for Backlighting Light-Emitting Diodes. Chemistry of Materials, 33(5), 1893-1899. https://doi.org/10.1021/acs.chemmater.1c00180

High-Performance NaK₂Li[Li₃SiO₄]₄:Eu Green Phosphor for Backlighting Light-Emitting Diodes. / Fang, Mu Huai; Mariano, Carl Osby M.; Chen, Kuan Chun; Lin, Jia Cheng; Bao, Zhen; Mahlik, Sebastian; Lesniewski, Tadeusz; Lu, Kuang Mao; Lu, Ying Rui; Wu, Yu Jong; Sheu, Hwo Shuenn; Lee, Jyh Fu; Hu, Shu Fen; Liu, Ru Shi; Attfield, J. Paul.

於: Chemistry of Materials, 卷 33, 編號 5, 09.03.2021, p. 1893-1899.

研究成果: 雜誌貢獻 › 期刊論文 › 同行評審

Fang, Mu Huai ; Mariano, Carl Osby M. ; Chen, Kuan Chun ; Lin, Jia Cheng ; Bao, Zhen ; Mahlik, Sebastian ; Lesniewski, Tadeusz ; Lu, Kuang Mao ; Lu, Ying Rui ; Wu, Yu Jong ; Sheu, Hwo Shuenn ; Lee, Jyh Fu ; Hu, Shu Fen ; Liu, Ru Shi ; Attfield, J. Paul. / High-Performance NaK₂Li[Li₃SiO₄]₄:Eu Green Phosphor for Backlighting Light-Emitting Diodes. 於: Chemistry of Materials. 2021 ; 卷 33, 編號 5. 頁 1893-1899.

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title = "High-Performance NaK2Li[Li3SiO4]4:Eu Green Phosphor for Backlighting Light-Emitting Diodes",

abstract = "Narrowband green phosphors with high quantum efficiency are required for backlighting white light-emitting diode (WLED) devices. Materials from the A[Li3SiO4]4:Eu2+ family have recently been proposed as having superior properties to industry-standard β-SiAlON green phosphors. Here, we show that a cheap, easily synthesized host NaK2Li[Li3SiO4]4 (NKLLSO) doped with a mixture of Eu2+ and Eu3+ is an outstanding narrowband green phosphor, with an external quantum efficiency of 51% and superb thermal stability (97.1% of room-temperature performance at 150 °C). Structural studies reveal that green emission occurs from two Eu2+ sites, while Eu3+ introduces a high concentration of vacancies that may suppress quenching from energy transfer between Eu2+ sites. A WLED package constructed using our NKLLSO phosphor shows extremely high color vividness, competitive with a β-SiAlON comparator. This work will stimulate further research on efficient green phosphors for practical WLED devices. ",

author = "Fang, {Mu Huai} and Mariano, {Carl Osby M.} and Chen, {Kuan Chun} and Lin, {Jia Cheng} and Zhen Bao and Sebastian Mahlik and Tadeusz Lesniewski and Lu, {Kuang Mao} and Lu, {Ying Rui} and Wu, {Yu Jong} and Sheu, {Hwo Shuenn} and Lee, {Jyh Fu} and Hu, {Shu Fen} and Liu, {Ru Shi} and Attfield, {J. Paul}",

note = "Funding Information: This work was supported by the Ministry of Science and Technology of Taiwan (contract nos. MOST 109-2112-M-003-011, MOST 109-2113-M-002-020-MY3, MOST 107-2113-M-002-008-MY3, MOST 110-2923-M-002-017-MY3, MOST 107-2923-M-002-004-MY3, and MOST 106-2112-M-003-007-MY3), the National Science Centre Poland Grant Opus (no. 2016/23/B/ST3/03911 and no. 2019/33/B/ST3/00406), and The National Centre for Research and Development Poland Grant (no. PL-TW/V/1/2018). J.P.A. acknowledges financial support from EPSRC, U.K. Publisher Copyright: {\textcopyright} 2021 American Chemical Society.",

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doi = "10.1021/acs.chemmater.1c00180",

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T1 - High-Performance NaK2Li[Li3SiO4]4:Eu Green Phosphor for Backlighting Light-Emitting Diodes

AU - Fang, Mu Huai

AU - Mariano, Carl Osby M.

AU - Chen, Kuan Chun

AU - Lin, Jia Cheng

AU - Bao, Zhen

AU - Mahlik, Sebastian

AU - Lesniewski, Tadeusz

AU - Lu, Kuang Mao

AU - Lu, Ying Rui

AU - Wu, Yu Jong

AU - Sheu, Hwo Shuenn

AU - Lee, Jyh Fu

AU - Hu, Shu Fen

AU - Liu, Ru Shi

AU - Attfield, J. Paul

N1 - Funding Information: This work was supported by the Ministry of Science and Technology of Taiwan (contract nos. MOST 109-2112-M-003-011, MOST 109-2113-M-002-020-MY3, MOST 107-2113-M-002-008-MY3, MOST 110-2923-M-002-017-MY3, MOST 107-2923-M-002-004-MY3, and MOST 106-2112-M-003-007-MY3), the National Science Centre Poland Grant Opus (no. 2016/23/B/ST3/03911 and no. 2019/33/B/ST3/00406), and The National Centre for Research and Development Poland Grant (no. PL-TW/V/1/2018). J.P.A. acknowledges financial support from EPSRC, U.K. Publisher Copyright: © 2021 American Chemical Society.

PY - 2021/3/9

Y1 - 2021/3/9

N2 - Narrowband green phosphors with high quantum efficiency are required for backlighting white light-emitting diode (WLED) devices. Materials from the A[Li3SiO4]4:Eu2+ family have recently been proposed as having superior properties to industry-standard β-SiAlON green phosphors. Here, we show that a cheap, easily synthesized host NaK2Li[Li3SiO4]4 (NKLLSO) doped with a mixture of Eu2+ and Eu3+ is an outstanding narrowband green phosphor, with an external quantum efficiency of 51% and superb thermal stability (97.1% of room-temperature performance at 150 °C). Structural studies reveal that green emission occurs from two Eu2+ sites, while Eu3+ introduces a high concentration of vacancies that may suppress quenching from energy transfer between Eu2+ sites. A WLED package constructed using our NKLLSO phosphor shows extremely high color vividness, competitive with a β-SiAlON comparator. This work will stimulate further research on efficient green phosphors for practical WLED devices.

AB - Narrowband green phosphors with high quantum efficiency are required for backlighting white light-emitting diode (WLED) devices. Materials from the A[Li3SiO4]4:Eu2+ family have recently been proposed as having superior properties to industry-standard β-SiAlON green phosphors. Here, we show that a cheap, easily synthesized host NaK2Li[Li3SiO4]4 (NKLLSO) doped with a mixture of Eu2+ and Eu3+ is an outstanding narrowband green phosphor, with an external quantum efficiency of 51% and superb thermal stability (97.1% of room-temperature performance at 150 °C). Structural studies reveal that green emission occurs from two Eu2+ sites, while Eu3+ introduces a high concentration of vacancies that may suppress quenching from energy transfer between Eu2+ sites. A WLED package constructed using our NKLLSO phosphor shows extremely high color vividness, competitive with a β-SiAlON comparator. This work will stimulate further research on efficient green phosphors for practical WLED devices.

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JO - Chemistry of Materials

JF - Chemistry of Materials

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ER -

High-Performance NaK2Li[Li3SiO4]4:Eu Green Phosphor for Backlighting Light-Emitting Diodes

摘要

ASJC Scopus subject areas

存取文件

其它文件與鏈接

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引用此

High-Performance NaK₂Li[Li₃SiO₄]₄:Eu Green Phosphor for Backlighting Light-Emitting Diodes