Enhancement of up-conversion luminescence intensity of Er-doped CaMoO4 by K2CO3 addition

IF 3.8 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Optical Materials Pub Date : 2025-03-19 DOI:10.1016/j.optmat.2025.116959

Tomoki Koikawa , Tomoyuki Yamamoto

引用次数: 0

Abstract

The effect of K₂CO₃ addition in CaMoO₄ for the synthesis by the solid-state reaction method on its up-conversion (UC) luminescence intensity has been investigated. The UC luminescence intensity was optimized by changing the amount of doped Er ions, which showed the maximum emission intensity with the cation ratio of Ca: Er: Mo = 0.97 : 0.03: 1. Then the change in UC luminescence intensity was compared by changing the amount of K₂CO₃ additions in raw materials before sintering. Observed UC luminescence intensity increased as increase of K₂CO₃ amount. The mechanism of the enhancement of UC luminescence intensity was studied by the examinations of X-ray diffraction, X-ray fluorescence, thermogravity measurements, and scanning electron microscope observations. The first principles calculations were also carried out to examine the substitution site of Er ions in CaMoO₄.

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来源期刊

Optical Materials 工程技术-材料科学：综合

CiteScore

6.60

自引率

12.80%

发文量

1265

审稿时长

38 days

期刊介绍： Optical Materials has an open access mirror journal Optical Materials: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. The purpose of Optical Materials is to provide a means of communication and technology transfer between researchers who are interested in materials for potential device applications. The journal publishes original papers and review articles on the design, synthesis, characterisation and applications of optical materials. OPTICAL MATERIALS focuses on: • Optical Properties of Material Systems; • The Materials Aspects of Optical Phenomena; • The Materials Aspects of Devices and Applications. Authors can submit separate research elements describing their data to Data in Brief and methods to Methods X.