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| Presentation | 2012-01-27 14:38 Measurement of two-wavelength excited photoluminescence in Ba3Si6O12N2:Eu2+ phodphor Ryo Ishioka, Kouhei Igarashi, Takeshi Fukuda (Saitama Univ.), Yasuo Shimomura (STRC, Mitsubishi Chemical), Norihiko Kamata (Saitama Univ.)  EID2011-19 Link to ES Tech. Rep. Archives: EID2011-19 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | One candidate of efficient and reliable phosphor materials, Ba3Si6O12N2:Eu2+, is suitable for the combination with UV- to blue-LED, since it has efficient emission around 525 nm with a wide excitation band between 250 nm and 450 nm. Most phosphor materials, however, exhibit various trap levels in theromoluminescence spectra, and the relation between these trap levels and non-radiative recombination (NRR) centers is not clearly understood. Here we measured the Ba3Si6O12N2:Eu2+ phosphor by two-wavelength excited photoluminescence method which is effective for detecting NRR centers through non-contacting and nondestructive way. The method adds the second excitation light whose photon energy is lower than the bandgap, and observes the intensity change of photoluminescence. We observed an intensity increase with the addition of the BGE light, and obtained the first-step information on the presence of NRR centers by studying the BGE density and BGE energy dependence. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Phosphor for LED lamp / Non-radiative recombination center / Two-wavelength excited photoluminescence / Thermoluminescence / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 111, no. 421, EID2011-19, pp. 21-24, Jan. 2012. | |
| Paper # | EID2011-19 | |
| Date of Issue | 2012-01-20 (EID) | |
| ISSN | Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 | |
| Copyright and reproduction |
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 | EID2011-19 Link to ES Tech. Rep. Archives: EID2011-19 |
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| Conference Information | |
| Committee | EID ITE-IDY IEE-EDD |
| Conference Date | 2012-01-27 - 2012-01-28 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Akita University |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Display technology, etc |
| Paper Information | |
| Registration To | EID |
| Conference Code | 2012-01-EID-IDY-EDD |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Measurement of two-wavelength excited photoluminescence in Ba3Si6O12N2:Eu2+ phodphor |
| Sub Title (in English) | |
| Keyword(1) | Phosphor for LED lamp |
| Keyword(2) | Non-radiative recombination center |
| Keyword(3) | Two-wavelength excited photoluminescence |
| Keyword(4) | Thermoluminescence |
| Keyword(5) | |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Ryo Ishioka |
| 1st Author's Affiliation | Saitama University (Saitama Univ.) |
| 2nd Author's Name | Kouhei Igarashi |
| 2nd Author's Affiliation | Saitama University (Saitama Univ.) |
| 3rd Author's Name | Takeshi Fukuda |
| 3rd Author's Affiliation | Saitama University (Saitama Univ.) |
| 4th Author's Name | Yasuo Shimomura |
| 4th Author's Affiliation | Mitsubishi Chemical Group (STRC, Mitsubishi Chemical) |
| 5th Author's Name | Norihiko Kamata |
| 5th Author's Affiliation | Saitama University (Saitama Univ.) |
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| Speaker | Author-1 |
| Date Time | 2012-01-27 14:38:00 |
| Presentation Time | 8 minutes |
| Registration for | EID |
| Paper # | EID2011-19 |
| Volume (vol) | vol.111 |
| Number (no) | no.421 |
| Page | pp.21-24 |
| #Pages | 4 |
| Date of Issue | 2012-01-20 (EID) |
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