Prashant Mandlik, Jonathan Gartside, Lin Han, I-Chun Cheng, Sigurd Wagner, Jeff A. Silvernail, Rui-Qing Ma, Michael Hack, Julie J. Brown
A single-layer permeation barrier for organic light-emitting displays
Applied Physics Letters 92 (2008) 103309
Films of a hybrid material with part-SiO2 part-silicone character are deposited as environmental barriers on bottom-emitting and on transparent organic light-emitting diodes. Devices coated with this barrier have lifetimes of up to similar to 7500 h when stored at 65 degrees C and 85% relative humidity, by far exceeding the industrial requirement of 1000 h. The intensity of the Si - O - Si absorption at the wavenumber of 1075 cm(-1), the wetting angle by water, and the indentation hardness support the interpretation of a homogeneous material with the properties of a SiO2-silicone hybrid. The films remain intact over 58 600 cycles of bending to similar to 0.2% tensile strain.
Cited Articles
-
Zajíčková L., Buršíková V., Kučerová Z., Franta D., Dvořák P., Šmíd R., Peřina V., Macková A.,
Deposition of protective coatings in RF organosilicon discharges,
Plasma Sources Science and Technology 16 (2007) S123–S132