Journal
APPLIED PHYSICS LETTERS
Volume 87, Issue 8, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.2032606
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Both charge-injection balance and high transmittance for the cathode are important to achieve high electroluminescence (EL) efficiency for a top-emitting organic light-emitting device (TEOLED) fabricated on silicon substrate. In this letter, by optimizing the electrical resistivity of the p-type silicon chip used as the anode and applying a Yb/Au double layer cathode with high electron-injection property and high transmittance, the TEOLED with a configuration of p-type silicon/thermal grown SiO2/NPB/Alq(3)/Yb/Au exhibits a higher EL efficiency than those of the TEOLEDs each with a Si chip as the anode reported previously. Its current efficiency is almost equal to that of a TEOLED with the same configuration except for an indium tin oxide anode. (c) 2005 American Institute of Physics.
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