Direct ultraviolet excitation of an amorphous AlN:praseodymium phosphor by codoped Gd3+ cathodoluminescence
作者： Muhammad Maqbool , I. Ahmad , H. H. Richardson , M. E. Kordesch
DOI: 10.1063/1.2809607
关键词: Ultraviolet 、 Optoelectronics 、 Thin film 、 Praseodymium 、 Electron excitation 、 Amorphous solid 、 Cathodoluminescence 、 Materials science 、 Analytical chemistry 、 Phosphor 、 Visible spectrum
摘要: Sputter deposited thin film amorphous AlN:Pr (1at.%) emits in the blue-green (490–530nm) and red (∼650nm) regions of visible spectrum under electron excitation. The addition Gd 1at.% enhances blue emission by an order magnitude. enhancement region is a result cathodoluminescence from Gd3+ at 313nm. optical bandgap AlN about 210nm, so that transparent ultraviolet, allowing to excite Pr3+ ions. No significant quenching observed when Pr ions are mixed. even with two films containing each separated 500μm thick quartz spacer, showing due entirely UV radiation.
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