Journal Home > Just Accepted
Journal of Advanced Ceramics https://doi.org/10.26599/JAC.2023.9220735
Research Article | Open Access | Just accepted | Available online: 24 February 2023

Reactive SPS of Al2O3−RE:YAG (RE = Ce; Ce+Gd) composite ceramic phosphors

Show Author's Information Denis Yu. Kosyanova,b( ),  Anastasia A. Vornovskikha,  Oleg O. Shichalina,  Evgeniy K. Papynova,  Anton A. Belova,  Aleksandra A. Kosianovaa,  Aleksandr N. Fedoretsa,  Andrei A. Leonovb,  Alexey P. Zavjalova,c,  Sergey A. Tikhonova,d,  Yanbin Wange,  Ziqiu Chenge,  Xin Liue,f,  Jiang Lie,f( )

a Far Eastern Federal University, 10 Ajax Bay, Russky Island, Vladivostok 690922, Russia

b Institute of Automation and Control Processes, Far Eastern Branch, Russian Academy of Sciences, 5 Radio Street, Vladivostok 690041, Russia

c Laboratory of Methods of Synchrotron Radiation, Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch of the Russian Academy of Sciences, 18 Kutateladze Street, Novosibirsk 630128, Russia

d Kamchatka Branch of Geophysical Survey of the Russian Academy of Sciences, 9 Piip Boulevard, Petropavlovsk-Kamchatsky, 683006, Russia

e Key Laboratory of Transparent Opto-functional Inorganic Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 585 He-shuo Road, Shanghai 201899, China

f Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China

Keywords:
Al2O3−Ce:YAG ceramic phosphors, Reactive SPS, Structural-phase state, Microstructure, Luminescence performance
Cite this article:
Kosyanov DY, Vornovskikh AA, Shichalin OO, et al. Reactive SPS of Al2O3−RE:YAG (RE = Ce; Ce+Gd) composite ceramic phosphors. Journal of Advanced Ceramics, 2023, https://doi.org/10.26599/JAC.2023.9220735
Download citation
EndNote(RIS)
BibTeX

269

Views

87

Downloads

Citations

0

Crossref

0

WoS

0

Scopus

0

CSCD

Abstract About this article

Ultrafine-grained Al2O3−RE:YAG (RE=Ce; Ce+Gd) composite ceramics were obtained for the first time by reactive SPS using commercially available initial oxide powders. The effect of key sintering parameters (temperature and dwell time, external pressure) on densification peculiarities, structural-phase state, and luminescent properties of composites was studied comprehensively. Differences in phase formation and densification between Ce-doped and Ce,Gd-codoped systems were shown. Parameters of reactive SPS at which there is partial melting with the formation of near-eutectic zones of the Al2O3−YAG system/coexistence of several variations of the YAG-type phase were established. Pure corundum-garnet biphasic ceramics with an optimal balance between microstructural and luminescence performance were synthesized at 1425°C / 30 min / 30-60 MPa. The external quantum efficiency of the phosphor converters reached 80.7% and 72% with close lifetimes of ~63.8 nsec, similarly to commercial Ce:YAG materials, which is promising for further application in the field of high-power white LEDs and LDs.

Publication history
Copyright
Rights and permissions

Publication history

Received: 22 November 2022
Revised: 21 February 2023
Accepted: 24 February 2023
Available online: 24 February 2023

Copyright

© The Author(s) 2023.

Rights and permissions

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made.

The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder.

To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

Return