Intense red emission of mixed-alkali rare-earth free germanate glass-ceramics with Mn ions

Author:

Babkina Anastasiia1ORCID,Valiev Damir2,Kulpina Ekaterina1,Pavliuk Aleksandra1ORCID,Zyryanova Ksenia1,Monogarova Alina1,Ignatiev Alexander1,Kuzmenko Natalia1,Zhizhin Evgeny3,Koroleva Aleksandra3

Affiliation:

1. ITMO University

2. National Research Tomsk Polytechnic University

3. Saint-Petersburg University

Abstract

A series of germanate glasses with manganese and alkaline ions (Li, Na, K, Rb, Cs) are successfully synthesized. Only 9 out of 21 studied compositions crystallize into glass-ceramics with LiNaGe4O9 and Li2Ge7O15 nanocrystals. The glass-ceramics possess intense emission near 660-670 nm with 37% QY and two-exponential decay with lifetime equal to 1.29 msec. The fabricated materials can be used as a deep-red radiation light source for plant growth cultivation.

Funder

Russian Science Foundation

Publisher

Optica Publishing Group

Subject

Electronic, Optical and Magnetic Materials

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