Abstract
The performance of an organic light-emitting diode (OLED) with a vacuum-deposited perylene layer over a fluorine-doped tin oxide (FTO) surface is reported. To investigate the effect of the perylene layer on OLED performance, different thicknesses of perylene are deposited on the FTO surface and their current density–voltages (J–V), luminance–voltages (L–V) and device efficiency characteristics at their respective thickness are studied. Further analysis is carried out with an UV–visible light double-beam spectrophotometer unit, a four-probe resistivity unit and a field emission scanning electron microscope set up to study the optical transmittance, sheet resistance and surface morphology of the bilayer anode film. We used N,N′-bis(3-methyl phenyl)-N,N′(phenyl)-benzidine (TPD) as the hole transport layer, Tris(8-hydroxyquinolinato)aluminum (Alq3) as a light-emitting layer and lithium fluoride as an electron injection layer. The luminance efficiency of an OLED structure with a 9-nm-thick perylene interlayer is increased by 2.08 times that of the single-layer FTO anode OLED. The maximum value of current efficiency is found to be 5.25 cd/A.
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Saikia, D., Sarma, R. Organic Light-Emitting Diodes with a Perylene Interlayer Between the Electrode–Organic Interface. J. Electron. Mater. 47, 737–743 (2018). https://doi.org/10.1007/s11664-017-5806-0
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DOI: https://doi.org/10.1007/s11664-017-5806-0