Abstract
NaYF4 is well known and most promising upconversion yttrium based fluoride phosphor till date. Fluoride synthesis is rather tricky due to their peculiar physico-chemical properties. Fluorides are highly susceptible to hydrolysis. This is detrimental to the luminescence. Conventional method for preparing complex fluoride compounds is solid state reaction which is a tedious task. In recent years, many new methods such as wet chemical synthesis have been suggested for these novel materials. These new syntheses provide more milder and efficient ways of materials preparation. Here, preparation of two luminescent hosts NaYF4 and KYF4 was attempted via Wet-Chemical synthesis. Among these, NaYF4 could be successfully prepared, whereas synthesis of KYF4 was partially successful. Formation of these compounds was confirmed by various measurements. Photoluminescence was obtained for Ce3+ doped NaYF4.
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