2006
DOI: 10.1080/15421400600932397
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Significantly Improved Power Efficiency of Organic Light-Emitting Diodes with Surface Dipole on Anode and Ohmic Cathode Contact

Abstract: Dramatically improved power efficiency and stability of organic light-emitting diodes (OLEDs) were achieved by using buckminsterfullerene (C 60 ) as an interlayer between indium tin oxide (ITO) anode and hole transporting layer of N, N 0 -diphenyl-N, N 0 -bis(1,1 0 -biphenyl)-4,4 0 -diamine (NPB) and electron transporting layer (ETL) at the same time. The results are ascribed to the interfacial-dipole formation of C 60 on the surface of ITO anode and Ohmic cathode contact of C 60 . The surface dipole of C 60 o… Show more

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