Pulse Excitation of Electroluminescent Films of ZnS:Cu(Cl,Br,I)

Abstract

RADIATION OF FLUORESCENTLAMP PHOSPHORS 41 fluorescent lamp if its operation caused slow deposition of ultraviolet-absorbing materials such as mercury (6) or mercuric oxide on the phosphor surfaces. Thus it is conceivable that such a process would produce an apparent depreciation of the barium titanium phosphate due only to increased temperature of the phosphor surface, but which would have a negligible effect on the halophosphate phosphors. ABSTRACTThin electroluminescent films of ZnS:Cu, (C1,Br,I) between tin-oxide-onglass and aluminum electrodes were excited with unidirectional voltage pulses of either polarity. Results are given for the delay, rise, and decay time and the emission intensity of the light pulses under varying conditions of voltage, pulse duration, and repetition rate. The decay of the light pulse can be represented by a fast exponential superposed on a slower bimolecular form. Voltage pulses with the metal electrode positive suppress the longer wavelength emission band.) unless CC License in place (see abstract). ecsdl.org/site/terms_use address. Redistribution subject to ECS terms of use (see 134.117.10.200 Downloaded on 2014-12-30 to IP ) unless CC License in place (see abstract). ecsdl.org/site/terms_use address. Redistribution subject to ECS terms of use (see