期刊
JOURNAL OF PHYSICS D-APPLIED PHYSICS
卷 42, 期 6, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0022-3727/42/6/065106
关键词
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资金
- Chinese Academy of Sciences
- National Science Fund for Distinguished Young Scholars of China [50325312]
- Foundation of Jilin Research Council [20050517, 20080337]
- Foundation of Changchun Research Council [2007GH06]
- Science Fund for Creative Research Groups of NSFC [20621401]
- Ministry of Science and Technology of China [2006AA03A161, 2009CB930603, 2009CB623604]
A highly efficient and colour-stable three-wavelength white organic light-emitting diode with the structure of indium tin oxide (ITO)/MoO3/N,N'-diphenyl-N,N'-bis (1-naphthylphenyl)-1,1'-biphenyl-4,4'-diamine (NPB)/4,4'-N,N'-dicarbazole-biphenyl (CBP): bis(2,4-diphenylquinolyl-N,C-2') iridium( acetylacetonate) (PPQ)(2)Ir(acac)/NPB/p-bis(p-N,N-diphenyl-aminostyryl)benzene (DSA-Ph):2-methyl-9,10-di(2-naphthyl) anthracene (MADN)/tris (8-hydroxyquinoline) aluminum (AlQ): 10-(2-Benzothiazolyl)-2,3,6,7-tetrahydro-1,1,7,7-tetramethyl-1H,5H,11H-(1)-benzopyropyrano(6,7-8-i,j)quinolizin-11-one (C545T)/AlQ/LiF/Al is fabricated and characterized. A current efficiency of 12.3 cdA(-1) at an illumination-relevant brightness of 1000 cd m(-2) is obtained, which rolls off slightly to 10.3 cdA(-1) at a rather high brightness of 10 000 cd m(-2). We attribute this great reduction in the efficiency roll-off to the wise management of singlet and triplet excitons between emissive layers as well as the superior charge injection and diffusion balance in the device.
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