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发光层厚度优化对有机电致发光器件性能的影响

发表时间:2014-10-31  浏览量:1599  下载量:437
全部作者: 徐维,王莉,王强,刘澧浦,孟欢,童叶翔
作者单位: 西安交通大学机械制造系统工程国家重点实验室;中山大学化学与化学工程学院,生物无机与合成化学教育部重点实验室,环境与能源化学广东普通高校重点实验室;江门市长优实业有限公司
摘 要: 通过优化有机电致发光器件发光层(emission layer,EML),使其发光效率得到提高。通过调节EML厚度,电流密度为20 mA/cm2时,电流效率达到6.53 cd/A(Device2),与EML厚度未经优化的2个器件Device1及Device3相比,Device2的电流效率分别提高了40%和23%. 改善的原因是EML的厚度优化使EML区域的载流子达到有效平衡。
关 键 词: 电子技术;有机电致发光器件;优化;电流效率;厚度
Title: Effect of optimization of emission layer on the performance of organic light-emitting diodes
Author: XU Wei, WANG Li, WANG Qiang, LIU Lipu, MENG Huan, TONG Yexiang
Organization: State Key Laboratory for Manufacturing Systems Engineering, Xi’an Jiaotong University; Key Laboratory of Environment and Energy Chemistry of Guangdong Higher Education Institutes, Key Laboratory of Bioinorganic and Synthetic Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Sun Yat-sen University; Jiangmen Chancsun Umicore Industry Co. Ltd.
Abstract: In this paper, luminous efficiency of organic light-emitting diodes has been enhanced by the optimization of the emission layer (EML). By optimizing the thickness of EML, we achieved a current efficiency of 6.53 cd/A (Device 2) at a current density of 20 mA/cm2, Which is 40% higher compared with Device 1 and 23% higher compared with Device 3. This improvement in the device efficiency has been attributed to the optimization of the EML which leads to the effective carrier balance in the emission zone.
Key words: electronic technology; organic light-emitting diodes; optimization; current efficiency; thickness
发表期数: 2014年10月第20期
引用格式: 徐维,王莉,王强,等. 发光层厚度优化对有机电致发光器件性能的影响[J]. 中国科技论文在线精品论文,2014,7(20):2003-2006.
 
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