Narrow-band phosphor K2ZnP2O7:Eu2+ discovered using local structure similarity. (1st July 2022)

• Record Type: Journal Article
• Authors: Takemura, Shota; Koyama, Yukinori; Nakanishi, Takayuki; Funahashi, Shiro; Hirosaki, Naoto; Ikeno, Hidekazu; Takeda, Takashi
• Is Part Of: Scripta materialia. Number 215(2022)
• Publication Date: 2022-07-01
• Subjects: Narrow-band Phosphor, Eu2+, Local structure similarity, t-SNE visualization -- Materials informatics; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2022.114686
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: A new narrow-band emitting phosphor K2 ZnP2 O7 :Eu 2+ was discovered by extracting promising crystal structures from a database. Regarding the local structures consisting of the central cation and surrounded ligands extracted from the crystal structure, we obtained the quantitative dissimilarity between the local structures and visualized the data as a 2D scatter plot using the t-SNE method. As a result, one of the K-sites of K2 ZnP2 O7 was located near the reference local structure Ba-site of the known narrow-band phosphor BaSi2 O2 N2 :Eu 2+ in the scatter plot. We synthesized K2 ZnP2 O7 :Eu 2+ and measured the luminescence properties. K2 ZnP2 O7 :Eu 2+ showed a narrow-band emission at 440 nm with a full width at half maximum of 30 nm. Graphical abstract: Image, graphical abstract