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- W1994840656 abstract "Atomic Layer Epitaxy (ALE) grown Al2O3/SrS/AlxTiyOz/glass films were ion-implanted and annealed to study photoluminescence (PL) characteristics of potential blue color phosphors. 63Cu+ and 37Cl+ or 18O+ ions with partially overlapping spots were implanted with three doses (0.2, 0.6 and 1.7×1016 at./cm2) using ion energies 60, 80 and 120 keV for 18O+, 37Cl+ and 63Cu+, respectively. Cu acts in SrS as an activator, while O and Cl are possible codopants. Samples were annealed in N2 atmosphere at 600∘C and 800∘C for 2 h. Time-of-flight elastic recoil detection analysis (TOF-ERDA) using 34 MeV 127I ions as projectiles was utilized to study diffusion of implanted ions and impurity concentrations. All samples showed green PL. Those codoped with 18O and annealed at 600∘C showed enhanced PL intensity compared to only Cu implanted samples. 37Cl codoping shifted the peak maximum from 520 nm towards blue by 20 nm without decreasing intensity when annealed at 600∘C. In TOF-ERDA analysis, 18O was found to diffuse through the SrS/ATO interface, 37Cl evaporated mainly out and 63Cu remained inside the SrS film. The oxygen impurity concentration increased when samples were annealed at higher temperatures." @default.
- W1994840656 created "2016-06-24" @default.
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- W1994840656 date "1999-01-01" @default.
- W1994840656 modified "2023-10-16" @default.
- W1994840656 title "Modification of ALE-grown SrS thin films by ion implantation of Cu and codopants" @default.
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- W1994840656 doi "https://doi.org/10.1016/s0168-583x(98)00672-7" @default.
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