Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5461013 | Journal of Alloys and Compounds | 2017 | 6 Pages |
Abstract
Er3+-doped transparent bulk glass ceramics (GC) containing KYb2F7 nano-crystals were fabricated by melt-quenching technique and subsequent thermal treatment. Their structural and up-conversion luminescent properties were systemically investigated. Optical spectroscopy analysis demonstrates the incorporation of Er3+ into the KYb2F7 crystalline lattice, resulting in highly enhanced up-conversion luminescence. The temperature sensing performance of KYb2F7:Er3+ were investigated by the fluorescence intensity ratio of the thermally coupled emitting levels (2H11/2 and 4S3/2). Due to low phonon energy and high thermal stability, Er3+ ions in KYb2F7 GC present large energy gap (844Â cmâ1) and high theoretical maximum value of relative sensitivity (45.40Â ÃÂ 10â4Â Kâ1Â at 590Â K), suggesting that KYb2F7:Er3+ GC can be excellent candidates for optical temperature sensors.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
JiangKun Cao, FangFang Hu, LiPing Chen, Hai Guo, Changkui Duan, Min Yin,