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Blue Non-Doped Organic Light Emitting Diodes Based on a Novel Donor–Acceptor Molecule

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Blue organic electroluminescent devices with the structure of ITO/NPB (40 nm)/TcTA (5 nm)/TPAMI (x nm)/TPBi (20 nm)/LiF (0.5 nm)/Al (100 nm), (x = 10, 15, 20, 25) were successfully fabricated in this study. The N,N'-diphenyl-4'-(1-phenyl-1H-benzl[d]imidazol-2-yl)-[1,1'-biphenyl]-3-amine (TPAMI) blue fluorescent dye was used as single light emitting layer. The effects of TPAMI layer on luminescence performance by the devices were investigated in detail. All the four devices were entirely in the blue region and there was a slight change of Commission International de l'Eclairage coordinates at (0.17, 0.17). When the TPAMI thickness was fixed at 15 nm, the maximum luminance was 3080 cd/m2 and the current efficiency was 1.31 cd/A.
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Keywords: BLUE-LIGHT EMISSION; DONOR–ACCEPTOR MOLECULE; FLUORESCENT; NON-DOPED

Document Type: Short Communication

Publication date: March 1, 2017

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  • Nanoscience and Nanotechnology Letters (NNL) is a multidisciplinary peer-reviewed journal consolidating nanoscale research activities in all disciplines of science, engineering and medicine into a single and unique reference source. NNL provides the means for scientists, engineers, medical experts and technocrats to publish original short research articles as communications/letters of important new scientific and technological findings, encompassing the fundamental and applied research in all disciplines of the physical sciences, engineering and medicine.
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