https://scholars.lib.ntu.edu.tw/handle/123456789/155558
標題: | Voltage reduction of Organic Light-Emitting Device (OLED) with an n-type organic material and a silver cathode | 作者: | Wu, Meng-Hsiu JIUN-HAW LEE MAN-KIT LEUNG Hsu, Yu-Nu |
關鍵字: | Metal-doped; OLED; Organic; Silver cathode | 公開日期: | 2005 | 卷: | 5632 | 起(迄)頁: | 178 - 183 | 來源出版物: | Proceedings of SPIE - The International Society for Optical Engineering | 會議論文: | Light-Emitting Diode Materials and Devices | 摘要: | In this paper, a 1.85V reduction in driving voltage of an OLED is presented by using an alkali-metal doped electron transport layer (ETL) and a silver (Ag) cathode. Such an ETL is composed of 2,9-dimethyl-4,7-diphenyl 1,10-phenanthroline (BCP) doped with Cseium (Cs) to increase the conductivity of the organic material and achieve ohmic contact at the ETL/cathode interface regardless the work function of the cathode material. Ag is used to replace the conventional aluminum as the cathode material due to its lower electrical resistivity and optical absorption in visible range. In our devices, the drive voltage was reduced by 1.45V when using MD technique only. When we change the cathode material from Al to Ag, the driving voltage has a further of 0.4V reduction. In those devices, current efficiency is around 3.3 to 4.1 cd/A at 100 mA/cm2.That corresponds to an improvement of 53.36% in power efficiency at 10 mA/cm2. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-19844362088&doi=10.1117%2f12.567637&partnerID=40&md5=1a3f43a37fe210c0c1b02a5af94dc5a2 | ISSN: | 0277786X | DOI: | 10.1117/12.567637 |
顯示於: | 電機工程學系 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。