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Inne
Synthesis and structural characterization of a new molecular precursor for BaHfO3: a simple approach to Eu-based phosphors.
Autorzy
Rok wydania
2011
Czasopismo
Numer woluminu
23
Strony
4212-4219
DOI
10.1021/cm201553j
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
A single-source molecular precursor [Ba4Hf2(μ6-O)(μ3,η2-OR)8(μ-OR)2(μ-ROH)4Cl4] (ROH = CH3OCH2CH2OH) for mixed-metal oxide materials was prepared via elimination of the cyclopentadienyl ring from Cp2HfCl2 as CpH, in the presence of Ba(OR)2 in an alcohol ROH as a source of protons. The precursor was characterized by elemental analysis, infrared (IR) and nuclear magnetic resonance (NMR) spectroscopy, and single-crystal X-ray structural analysis. This complex undergoes thermal decomposition at 800 °C to a BaCl2/BaHfO3 mixture. After barium dichloride has been leached from the raw powder using deionized water, the resulting particles are of submicrometer size (30–50 nm). Preliminary studies of barium hafnate doped with Eu3+ sintered at 900 °C showed that a dominant luminescence band belongs to the strong electric dipole transition 5D0→7F2.
Słowa kluczowe
barium hafnate, perovskite, single-source precursor (SSP), phosphors
Adres publiczny
https://doi.org/10.1021/cm201553j
Strona internetowa wydawcy
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