文献类型：期刊文献

英文题名：Effects of emissive layer architecture on recombination zone and Forster resonance energy transfer 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：35

期号：5

起止页码：247

外文期刊名：DISPLAYS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000346455800003)】；

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：Forster resonance energy transfer; Spacer; Recombination zone; Emissive spectra; Electron block effect

摘要：Recombination zone and Forster resonance energy transfer (FRET) in multilayer organic light-emitting diodes (OLEDs) were investigated. Basis device architecture is indium tin oxide (ITO)/N, N'-diphenyl-N, N'-bis(1-naphthyl-phenyl)-1, 1'-biphenyl-4, 4'-diamine (NPB)/4-(dicyanomethylene)-2-tert-butyl-6-(1, 1, 7, 7- tetramethyljulolidyl-9-enyl)-4H-pyran (DCJTB)/NPB (spacer)/tris-(8-hydroxyl quinoline) aluminum (Alq(3))/2, 9-dimethyl-4, 7-diphenyl-1, 10-phenanthroline (BCP)/Al. Exciton recombination zone is located at DCJTB and Alq(3) layers. When the NPB spacer is 10-nm-thick, Alq(3) emission governs in electro-luminescent (EL) spectra owing to absence of FRET between DCJTB and Alq3. FRET occurs while the NPB spacer is 5-nm-thick and thus DCJTB emission is dominant in EL spectra. As the emissive layout of DCJTB/Alq(3)/NPB substitutes for DCJTB/NPB/Alq(3), both DCJTB and NPB emissions are observed due to electron-blocking effect of NPB. (C) 2014 Elsevier B.V. All rights reserved.