It is shown that a-c powder EL deterioration is closely related to sulfur vacancy in the phosphor and the phosphor crystal quality, by measurement of ESR spectrum and x-ray diffraction pattern. The EL phosphor life is improved with a decrease in the sulfur vacancy density in the phosphor. It is further improved with a decrease in the x-ray diffraction (111) peak intensity of the phosphor. ) unless CC License in place (see abstract). ecsdl.org/site/terms_use address. Redistribution subject to ECS terms of use (see 128.210.126.199 Downloaded on 2015-05-31 to IP ) unless CC License in place (see abstract). ecsdl.org/site/terms_use address. Redistribution subject to ECS terms of use (see 128.210.126.199 Downloaded on 2015-05-31 to IP Vol. 130, No. 11
Liquid-crystal microprism arrays are shown to be useful for providing electrically controlled alignment of optical beams and fixed various free-space optical interconnections. They can deflect closely spaced micro-optical beams individually to any position with high transmittance (95%), high deflection angle (~10°), and low voltage (<2.8 V(rms)). Various fixed optical interconnections can be made simply by changes in the voltages applied to the microprism.
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