Abstract
Polycrystalline cerium hydroxysulfate powders have been prepared by soft solution processing using various basic solvents. The crystals prepared have varying morphologies, spherical and flaky, depending on the solvent used. The crystals obtained from distilled water-pyridine and aqueous ammonia solvent mixtures are spherical, whereas those obtained from mixtures of distilled water and ethylenediamine or hydrazine hydrate are flaky. All the crystalline cerium hydroxysulfate samples display luminescence properties. It was found that the flaky crystals generally show a much stronger luminescence than their spherical counterparts.
Flaky or spherical particles of CeOHSO
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can be produced using different basic solvents. The flaky crystallites show stronger luminescence than the spherical ones. The materials have potential applications in insect-killer lamps and other special phosphor devices.