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Yb3+-Yb3+ cooperative upconversion in oxyfluoride glass and glass ceramics

Yb3+-Yb3+ cooperative upconversion in oxyfluoride glass and glass ceramics
Yb3+-Yb3+ cooperative upconversion in oxyfluoride glass and glass ceramics
Yb3+-doped oxyfluoride glasses and glass ceramics containing KZnF3 nanocrystals were obtained by melt-quenching. Under excitation of a 980 nm laser, a strong blue emission from Yb3+-Yb3+ cooperative upconversion was observed in the glass sample, which increased by five times in glass ceramics after heat treatment for 20 hours. The photoluminescence mechanism and sample properties were investigated by X-ray diffraction, transmission electron microscopy, fluorescent lifetime, absorption and emission spectra. The size of KZnF3 nanocrystals is in the range 5 nm to 20 nm, making the glass ceramic samples highly transparent. The STEM-EDS measurements indicate that the distribution of Yb is consistent with that of the KZnF3 nanocrystals. Fluroide phase provides a low-phonon-energy environment for Yb3+-Yb3+ ion pairs, which facilitates an intense fluorescent blue emission in the KZnF3 crystal lattice. Both theoretical and experimental results demonstrate that Yb3+-doped oxyfluoride glasses and glass ceramics containing KZnF3 nanocrystals are promising materials for blue upconversion emission.
Cooperative upconversion, Glass ceramics, KZnF nanocrystal
0022-2313
Wang, Xin
ea92cc1d-226e-4adf-8c85-019c5ab35ddb
Li, Wenhao
3443c1e0-a1d2-42ae-9613-b48f570506a1
Zhao, Haiyan
d273959c-2e0a-49f4-812e-6c1565298391
Wang, Shunbin
70976916-f2c8-4a61-b0ba-2cdd77286bea
Jia, Shijie
be203e37-2dc0-49e5-95e6-d188d8039eee
Dong, Yongkang
0fad0715-2d81-4ce5-a761-a3033a7bf5b4
Du, Yanqiu
81e261bb-efe5-47cd-8fa6-7f69d5721635
Brambilla, Gilberto
815d9712-62c7-47d1-8860-9451a363a6c8
Wang, Pengfei
a1ba240f-d4f0-4150-bcd8-cb418e841dcb
Wang, Xin
ea92cc1d-226e-4adf-8c85-019c5ab35ddb
Li, Wenhao
3443c1e0-a1d2-42ae-9613-b48f570506a1
Zhao, Haiyan
d273959c-2e0a-49f4-812e-6c1565298391
Wang, Shunbin
70976916-f2c8-4a61-b0ba-2cdd77286bea
Jia, Shijie
be203e37-2dc0-49e5-95e6-d188d8039eee
Dong, Yongkang
0fad0715-2d81-4ce5-a761-a3033a7bf5b4
Du, Yanqiu
81e261bb-efe5-47cd-8fa6-7f69d5721635
Brambilla, Gilberto
815d9712-62c7-47d1-8860-9451a363a6c8
Wang, Pengfei
a1ba240f-d4f0-4150-bcd8-cb418e841dcb

Wang, Xin, Li, Wenhao, Zhao, Haiyan, Wang, Shunbin, Jia, Shijie, Dong, Yongkang, Du, Yanqiu, Brambilla, Gilberto and Wang, Pengfei (2020) Yb3+-Yb3+ cooperative upconversion in oxyfluoride glass and glass ceramics. Journal of Luminescence, 226, [117461]. (doi:10.1016/j.jlumin.2020.117461).

Record type: Article

Abstract

Yb3+-doped oxyfluoride glasses and glass ceramics containing KZnF3 nanocrystals were obtained by melt-quenching. Under excitation of a 980 nm laser, a strong blue emission from Yb3+-Yb3+ cooperative upconversion was observed in the glass sample, which increased by five times in glass ceramics after heat treatment for 20 hours. The photoluminescence mechanism and sample properties were investigated by X-ray diffraction, transmission electron microscopy, fluorescent lifetime, absorption and emission spectra. The size of KZnF3 nanocrystals is in the range 5 nm to 20 nm, making the glass ceramic samples highly transparent. The STEM-EDS measurements indicate that the distribution of Yb is consistent with that of the KZnF3 nanocrystals. Fluroide phase provides a low-phonon-energy environment for Yb3+-Yb3+ ion pairs, which facilitates an intense fluorescent blue emission in the KZnF3 crystal lattice. Both theoretical and experimental results demonstrate that Yb3+-doped oxyfluoride glasses and glass ceramics containing KZnF3 nanocrystals are promising materials for blue upconversion emission.

Text
Yb3+-Yb3+ Cooperative Upconversion in Oxyfluoride Glass and Glass Ceramics - Accepted Manuscript
Restricted to Repository staff only until 12 June 2022.
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More information

Accepted/In Press date: 9 June 2020
e-pub ahead of print date: 12 June 2020
Published date: October 2020
Keywords: Cooperative upconversion, Glass ceramics, KZnF nanocrystal

Identifiers

Local EPrints ID: 442435
URI: http://eprints.soton.ac.uk/id/eprint/442435
ISSN: 0022-2313
PURE UUID: a091bc6f-2995-4f21-ae05-d915629c4777
ORCID for Gilberto Brambilla: ORCID iD orcid.org/0000-0002-5730-0499

Catalogue record

Date deposited: 15 Jul 2020 16:31
Last modified: 27 Apr 2022 01:43

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Contributors

Author: Xin Wang
Author: Wenhao Li
Author: Haiyan Zhao
Author: Shunbin Wang
Author: Shijie Jia
Author: Yongkang Dong
Author: Yanqiu Du
Author: Pengfei Wang

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