https://scholars.lib.ntu.edu.tw/handle/123456789/309147
標題: | High contrast ratio organic light-emitting devices based on CuPC as electron transport material | 作者: | Liao, Chi-Chih Hu, Pier-Jy Chang, Yih JIUN-HAW LEE |
關鍵字: | Ambient contrast ratio; CuPC; Organic light-emitting device | 公開日期: | 2004 | 卷: | 144 | 期: | 3 | 起(迄)頁: | 279-283 | 來源出版物: | Synthetic Metals | 摘要: | In this paper, a high-contrast-ratio organic light-emitting device (OLED) of high brightness is demonstrated. In this device, reflection from the cathode is reduced by inserting a copper-phthalocyanine (CuPC) layer between the emitting layer (EML) and the cathode called the Black Cathode™ technique. The absorption and the destructive interference effect caused by this layer lead to the decrease of the ambient light. With the same injection current density at 6mA/cm2, the contrast ratio of this device increases from 1.9 to 2.5 under 1000lx illumination, when compared with a conventional device. Although the thickness of this device increases by 54.5%, its driving voltage is nearly the same as that of a conventional device. This result implies the high electron mobility in the inserted CuPC layer. © 2004 Elsevier B.V. All rights reserved. |
URI: | http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=ISI&KeyUT=WOS:000222565700011&KeyUID=WOS:000222565700011 https://www.scopus.com/inward/record.uri?eid=2-s2.0-2942633112&doi=10.1016%2fj.synthmet.2004.04.007&partnerID=40&md5=c5e8b6fb512cb6792ae7d143e35c7732 |
DOI: | 10.1016/j.synthmet.2004.04.007 | SDG/關鍵字: | Cathodes; Current density; Current voltage characteristics; Electron mobility; Electron transitions; Indium compounds; Lighting; Photons; Tin compounds; Ambient contrast ratio; Organic light-emitting devices; Light emitting diodes |
顯示於: | 光電工程學研究所 |
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