Narrow-Band Emitting Phosphor Na 2 Cs 2 Sr(B 9 O 15 ) 2 :Eu 2+ Discovered from Local Structure Similarity with Sulfate Phosphor

Narrow-band emitting phosphors are required to improve the performance of phosphor-converted light-emitting diodes. Here, we found a new narrow-band emitting phosphor Na Cs Sr(B O ) :Eu using the local structure similarity with a known narrow-band emitting phosphor. In a 2D scatter plot of the struc...

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Published in:The journal of physical chemistry letters 2022-12, Vol.13 (51), p.11878-11882
Main Authors: Takemura, Shota, Koyama, Yukinori, Nakanishi, Takayuki, Funahashi, Shiro, Hirosaki, Naoto, Ikeno, Hidekazu, Takeda, Takashi
Format: Article
Language:English
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Summary:Narrow-band emitting phosphors are required to improve the performance of phosphor-converted light-emitting diodes. Here, we found a new narrow-band emitting phosphor Na Cs Sr(B O ) :Eu using the local structure similarity with a known narrow-band emitting phosphor. In a 2D scatter plot of the structural similarity between the local structures, the Sr site in Na Cs Sr(B O ) was located near the Ba site of the known narrow-band emitting sulfate phosphor BaSO :Eu with a distorted local structure. We synthesized Na Cs Sr(B O ) :Eu and characterized the luminescence properties by microspectroscopy. Na Cs Sr(B O ) :Eu showed a violet luminescence peaked at 417 nm, and the full-width at half-maximum was as narrow as 26 nm (1497 cm ).
ISSN:1948-7185
1948-7185
DOI:10.1021/acs.jpclett.2c02889