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Presentation 2020-01-24 11:05
[Poster Presentation] Influence of Bi codoping to excitation characteristics in tetragonal Mg2TiO4:Mn4+ deep red phosphors
Motoshi Suhama, Yusuke Ueno, Tadashi Ishigaki, Koutoku Ohmi (Tottori Univ.) EID2019-15 Link to ES Tech. Rep. Archives: EID2019-15
Abstract (in Japanese) (See Japanese page) 
(in English) In this study, the Bi3+ codoping to Mg2TiO4:Mn4+ has been attempted. In addition, a low temperature annealing at 625°C for 24 hours is also performed to cause a phase transition from cubic to tetragonal, resulting in further improvement of the photoluminescence (PL) intensity. The effects of the Bi-codoping and the low-temperature-annealing to light absorption and PL excitation has investigated. The PL intensity of the synthesized tetragonal Mg1.994Ti0.997O4: 0.3% Mn4+, 0.3% Bi3+, 0.3% Li+ is increased twice compared with the cubic Mg2TiO4:Mn4+. The light absorption especially between near-uv and visible wavelength region is also increased by Bi3+-doping, which gives rise to effectively improve the Mn4+ PL intensity.
Keyword (in Japanese) (See Japanese page) 
(in English) Red phosphor / Mg2TiO4:Mn4+ / Tetragonal / Bi3+ codoping / / / /  
Reference Info. IEICE Tech. Rep., vol. 119, no. 385, EID2019-15, pp. 125-128, Jan. 2020.
Paper # EID2019-15 
Date of Issue 2020-01-16 (EID) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
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All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF EID2019-15 Link to ES Tech. Rep. Archives: EID2019-15

Conference Information
Committee EID ITE-IDY IEIJ-SSL SID-JC IEE-EDD  
Conference Date 2020-01-23 - 2020-01-24 
Place (in Japanese) (See Japanese page) 
Place (in English) Tottori Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To EID 
Conference Code 2020-01-EID-IDY-SSL-JC-EDD 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Influence of Bi codoping to excitation characteristics in tetragonal Mg2TiO4:Mn4+ deep red phosphors 
Sub Title (in English)  
Keyword(1) Red phosphor  
Keyword(2) Mg2TiO4:Mn4+  
Keyword(3) Tetragonal  
Keyword(4) Bi3+ codoping  
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1st Author's Name Motoshi Suhama  
1st Author's Affiliation Tottori University (Tottori Univ.)
2nd Author's Name Yusuke Ueno  
2nd Author's Affiliation Tottori University (Tottori Univ.)
3rd Author's Name Tadashi Ishigaki  
3rd Author's Affiliation Tottori University (Tottori Univ.)
4th Author's Name Koutoku Ohmi  
4th Author's Affiliation Tottori University (Tottori Univ.)
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Speaker Author-1 
Date Time 2020-01-24 11:05:00 
Presentation Time 5 minutes 
Registration for EID 
Paper # EID2019-15 
Volume (vol) vol.119 
Number (no) no.385 
Page pp.125-128 
#Pages
Date of Issue 2020-01-16 (EID) 


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