%0 Journal Article
%T Electron Injection Enhancement by Diamond-Like Carbon Film in Polymer Electroluminescence Devices
%A Li Hongjian
%A Yan Lingling
%A Huang Baiyun
%A Yi Danqing
%A Hu Jin
%A He Yingxuan
%A Peng Jingcui
%A <br>Li Hongjian
%A Yan Lingling
%A Huang Baiyun
%A Yi Danqing
%A Hu Jin
%A He Yingxuan
%A Peng Jingcui
%J 半导体学报
%D 2006
%I 
%X A diamond-like carbon (DLC) film is deposited as an electron injection layer between the polymer light-emitting layer(MEH-PPV) and aluminum (Al) cathode electrode in polymer electroluminescence devices (PLEDs) using a radio frequency plasma deposition system.The source material of the DLC is n-butylamine.The devices consist of indium tin oxide (ITO)/MEH-PPV/DLC/Al.Electron injection properties are investigated through I-V characteristics,and the mechanism of electron injection enhancement due to a thin DLC layer has been studied.It is found that:(1) a DLC layer thinner than 1.0nm leads to a higher turn-on voltage and decreased electroluminescent (EL) efficiency;(2) a 5.0nm DLC layer significantly enhances the electron injection and results in the lowest turn-on voltage and the highest EL efficiency;(3) DLC layer that exceeds 5.0nm results in poor device performance;and(4) EL emission can hardly be detected when the layer exceeds 10.0nm.The properties of ITO/MEH-PPV/DLC/Al and ITO/MEH-PPV/LiF/Al are investigated comparatively.
%K diamond-like carbon
%K polymer electroluminescence device
%K electron injection enhancement<br>类金刚石碳膜
%K 聚合物发光器件
%K 电子注入增强
%K diamond-like
%K carbon
%K polymer
%K electroluminescence
%K device
%K electron
%K injection
%K enhancement
%K 聚合物电致发光器件
%K 类金刚石碳膜
%K 增强
%K 电子注入
%K Devices
%K Electroluminescence
%K Polymer
%K Carbon
%K Film
%K Enhancement
%K Injection
%K emission
%K results
%K device
%K performance
%K efficiency
%K voltage
%K thinner
%K mechanism
%K electron
%K injection
%K enhancement
%K Electron
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=025C8057C4D37C4BA0041DC7DE7C758F&aid=3BFE486D7A54C561&yid=37904DC365DD7266&vid=DB817633AA4F79B9&iid=CA4FD0336C81A37A&sid=340AC2BF8E7AB4FD&eid=339D79302DF62549&journal_id=1674-4926&journal_name=半导体学报&referenced_num=1&reference_num=15