文献类型：期刊文献

英文题名：Emission spectra dependence on voltage and emissive layer layout in organic light-emitting diodes

作者：Lu, Zhaoyue[1];Hou, Ying[1];Xiao, Jing[2];Xu, Haisheng[1,3]

机构：[1]E China Univ Sci & Technol, Sch Sci, Dept Phys, Shanghai 200237, Peoples R China;[2]Taishan Univ, Phys & Elect Engn Coll, Tai An 271021, Shandong, Peoples R China;[3]Kunshan Hisense Elect Co Ltd, Kunshan 215300, Jiangsu, Peoples R China

年份：2014

卷号：109

起止页码：197

外文期刊名：VACUUM

收录：;EI(收录号：20143418080863);WOS:【SCI-EXPANDED(收录号:WOS:000342716000035)】；

基金：We thank the Fundamental Research Funds for the Central Universities (222201314022 & 222201314010), China Postdoctoral Science Foundation (2013M541480), Science and Technology Commission of Suzhou Municipality (ZXG2012037), the National Natural Science Foundation of China (61204051 & 51303053) and the Science & Technology Development Project of Tai'an (20122053) for financially supporting this work.

语种：英文

外文关键词：Electroluminescent spectrum; Voltage-induced spectra variation; Emissive layer parameter; Organic light-emitting diode

摘要：Based on the device structure of indium tin oxide(ITO)/N,N'-diphenyl-N,N'-bis(1-naphthyl-phenyl)-1,1'-biphenyl-4,4'-diamine (NPB)/4-(dicyanomethylene)-2-tert-buty1-6-(1,1,7,7-tetramethyljulolidyl-9-enyl)-4H-pyran (DCJTB)/tris (8-hydroxy quinoline) aluminum (Alq(3))/NPB/bathocuproine (BCP)/AL the variation of emissive spectra with voltage and emissive unit (DCJTB/Alq(3)/NPB) parameters has been investigated. All electroluminescent spectra contain two components: blue emission from NPB and red emission of DCJTB. The Alq(3) emission is not observed due to its relative shallow LUMO (the lowest unoccupied molecular orbital) and deep HOMO (the highest occupied molecular orbital). The emission of NPB is increased with voltages as well as the thickness of NPB and Alq(3) for more holes escape from DCJTB and get in NPB to recombine with electrons. (C) 2014 Elsevier Ltd. All rights reserved.