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In this work, we regulate the coordination field of Ce3+ ion based on the co-substitution method, and achieve the spectra regulation in the yellow-green range. We used Ba2+-Si4+ cations to replace Y3+-Al3+ cations in Y3Al5O12 (YAG) matrix to obtain blue-shift of the emission peak from 552 nm to 539 nm. The centroid shift and crystal field splitting decrease with decreasing covalency of the bond between the Ce3+ ion and the surrounding anions owing to the higher electronegativity of Si4+ ions than Al3+ ions. The corresponding fluorescent films were prepared by a low-temperature co-sintering process based on the as-made Ba2+-Si4+
co-substituted phosphor. Spectral analysis showed that the garnet phase was protected by using lead-free borosilicate glass with a low melting point, and the quantum efficiency of phosphor-in-glass (PiG) retains 98% of the corresponding phosphor. By adjusting the ratio of garnet phosphor to commercial red nitride hosphors, a warm white fluorescence with a color rendering index of 80.3.
and color temperature of 3899 K was obtained. The prepared warm white film has
potential application value in the whole spectra field

権利情報:

• In Copyright
  

  This is the peer reviewed version of the following article:
  Inorganic remote glass film based on yellowish-green (Y, Ba) 3(Al, Si) 5 O12: Ce garnet phosphor for warm white LEDs, which has been published in final form at https://doi.org/10.1111/jace.19334. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited.

キーワード: co-substitution strategy, garnet structure, phosphor-in-glass film, yellowish-green

刊行年月日: 2023-07-23

出版者: Wiley

掲載誌:

• JOURNAL OF THE AMERICAN CERAMIC SOCIETY (ISSN: 00027820) vol. 106 issue. 11 p. 6577-6585

研究助成金:

原稿種別: 著者最終稿 (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.4330

公開URL: https://doi.org/10.1111/jace.19334

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更新時刻: 2024-07-18 08:30:13 +0900

MDRでの公開時刻: 2024-07-18 08:30:13 +0900