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| Presentation | 2012-11-19 14:15 Impedance spectroscopy analysis of buffer layer insertion at the interface between ITO and organic layer for the improvement of device stability in Alq3 organic light-emitting devices Tomoyuki Oshiro, Masahiro Konishi, Hirotake Kajii (Osaka Univ.), Takeo Otsuka (KANEKA Fundamental Technology Research Alliance Lab.), Yutaka Ohmori (Osaka Univ.)  OME2012-69 Link to ES Tech. Rep. Archives: OME2012-69 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | The properties of tris(8-hydroxyquinolinato)aluminum (Alq_3)-based OLEDs without and with a 10-nm-thick 1,4,5,8,9,11-hexaazatriphenylene-hexacarbonitrile (HAT(CN)_6) buffer layer at the interface between indium-tin-oxide(ITO) and N,N’-bis(1-naphtyl)-N,N’-diphenyl-1,1’-biphenyl-4,4’-diamine ($\alpha$-NPD) layer were investigated. The device lifetime was taken from the initial luminance of 5000 cd/m^2 to 2500 cd/m2. For a device with HAT(CN)_6, lifetime value is improving, and an Alq3 based OLED with an estimated lifetime of over 180 hours (time to reach 50 % of initial intensity) at 5,000 cd/m^2 was obtained. From measurement of impedance spectroscopy analysis, the improved hole injection from ITO to $\alpha$-NPD results in the improved lifetime of an Alq_3 based OLED. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | organic light-emitting diode / bufferlayer / Alq3 / impedance spectroscopy / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 112, no. 304, OME2012-69, pp. 39-42, Nov. 2012. | |
| Paper # | OME2012-69 | |
| Date of Issue | 2012-11-12 (OME) | |
| 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 | OME2012-69 Link to ES Tech. Rep. Archives: OME2012-69 |
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| Conference Information | |
| Committee | OME |
| Conference Date | 2012-11-19 - 2012-11-19 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Room 302, Nakanoshima Ctr., Osaka Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Organic Materials, etc. |
| Paper Information | |
| Registration To | OME |
| Conference Code | 2012-11-OME |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Impedance spectroscopy analysis of buffer layer insertion at the interface between ITO and organic layer for the improvement of device stability in Alq3 organic light-emitting devices |
| Sub Title (in English) | |
| Keyword(1) | organic light-emitting diode |
| Keyword(2) | bufferlayer |
| Keyword(3) | Alq3 |
| Keyword(4) | impedance spectroscopy |
| Keyword(5) | |
| Keyword(6) | |
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| 1st Author's Name | Tomoyuki Oshiro |
| 1st Author's Affiliation | Osaka University (Osaka Univ.) |
| 2nd Author's Name | Masahiro Konishi |
| 2nd Author's Affiliation | Osaka University (Osaka Univ.) |
| 3rd Author's Name | Hirotake Kajii |
| 3rd Author's Affiliation | Osaka University (Osaka Univ.) |
| 4th Author's Name | Takeo Otsuka |
| 4th Author's Affiliation | KANEKA Fundamental Technology Research Alliance Laboratories (KANEKA Fundamental Technology Research Alliance Lab.) |
| 5th Author's Name | Yutaka Ohmori |
| 5th Author's Affiliation | Osaka University (Osaka Univ.) |
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| Speaker | Author-1 |
| Date Time | 2012-11-19 14:15:00 |
| Presentation Time | 25 minutes |
| Registration for | OME |
| Paper # | OME2012-69 |
| Volume (vol) | vol.112 |
| Number (no) | no.304 |
| Page | pp.39-42 |
| #Pages | 4 |
| Date of Issue | 2012-11-12 (OME) |
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