Sol?Gel Approach to Sr2CeO4 Phosphor from Single Alkoxide Precursors
Source abstract
Abstract
Syntheses and characterizations of sol–gel precursors of Sr2CeO4 were carried out. Each molecular precursor, [Sr2Ce(OCH2CH2OCH3)8] (1), [Sr2Ce(O i Pr)8] (2) and [Sr2Ce2(O i Pr)12( i PrOH)4] (3) was prepared from mixtures of Sr complexes and cerium(IV) alkoxides. The molecular structure of 3 showed that [CeO6] octahedra are connected with distorted [SrO6] octahedra by sharing edges with oxo bridges. X-ray powder diffraction patterns and spectrofluorometry were used to determine the evolution of structure from the precursor molecules to the luminescent oxides. The luminescent strontium cerium oxides were derived at relatively mild reaction conditions (700 °C for 1 h), and complete conversion was observed at 1000 °C for 1 h from these precursors. Comparing the spectra of the oxides derived from 2 and 3, the emission intensity of the oxide derived from 2 is much stronger.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Luminescence Properties of Advanced Materials · Crystal Structures and Properties · Nuclear materials and radiation effects
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References (16)
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