Photo-excitation effects on oxide-ion conductors: case study of zirconia thin films Investigators
نویسنده
چکیده
Enhanced grain growth in ultra-thin yttria-doped-zirconia (YDZ) films synthesized under ultraviolet (UV) irradiation is reported. The mean grain size in UV-activated 7.5 mol % yttria doped zirconia films nearly 56 nm thick increased to 85 nm upon annealing in an oxygen-rich ambient at 900 C for one hour, while in thermally grown YDZ they grew only to ~15 nm under identical annealing conditions. In-situ electron microscopy kinetic studies reveal an enhanced kinetic constant and a self-limiting grain growth behaviour in the UV-synthesized oxide films.
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