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Abstract
AbstractIn this study, color tunable phosphors (Mn2+‐doped Zn2GeO4) were successfully synthesized by a facile microwave hydrothermal process with H2O as solvent. Crystal field modulation and band gap doping by Mn2+ substitution for Zn2+ realizes color tunable Mn2+ emission from 424 to 535 nm. Mn2+‐doping on the phase and size transition of Zn2GeO4 nanocrystals was discussed, and a possible Zn2GeO4 : xMn crystal growth mechanism is discussed. Photoluminescence (PL) spectra indicate that the d‐d transition of manganese ions (4T1→6A1) corresponds to a strong green emission of Zn2GeO4 : xMn phosphors.
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