Published in
Royal Society of Chemistry, Materials Advances, 6(2), p. 2075-2084, 2021
DOI: 10.1039/d1ma00036e
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Mn2+ activated Ca-α-SiAlON – Broadband deep-red luminescence and sensitization by Eu2+, Yb2+ and Ce3+
Journal article published in 2021 by
Atul D. Sontakke 
,
Arnoldus J. van Bunningen,
Sadakazu Wakui,
Andries Meijerink
,
Arnoldus J. van Bunningen,
Sadakazu Wakui,
Andries Meijerink
This paper is made freely available by the publisher.
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Abstract
Mn2+ occupies [Ca(N,O)7] polyhedral site in Ca-α-SiAlON. The polyhedral site imposes stronger crystal field and nephelauxetic shift on Mn2+ 4T1 → 6A1 transition, leading to an intense and broad deep-red emission.