Crystal-site engineering approach for preparation of Mg B2O4:Mn2+, Mn4+ (B= Al, Ga) phosphors: Control of green/red luminescence properties
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Abstract
Abstract The luminescence color (green/red) of Mg B2O4:Mn (B = Al, Ga) phosphors was controlled by crystal-site engineering approach through adjusting the quantity of MgO in raw materials. Though the stoichiometric samples (Mg/B = 1:2) indicated both green and red luminescence, the samples prepared with deficient-MgO and excess-MgO showed only green and red emission, respectively. The green and red luminescence were caused by Mn2+ in tetrahedral A-site and Mn4+ in octahedral B-site. The excess-MgO suppressed the substitution of Mn2+ dopant for Mg2+ in tetrahedral A-site and also acted as charge compensation agent for Mn4+ which replaced the B3+ ion (B = Al, Ga). We proposed the mechanism of green/red luminescence in Mn-doped Mg B2O4 (B = Al, Ga) phosphors with several Mg quantities.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Luminescence Properties of Advanced Materials · Luminescence and Fluorescent Materials · Glass properties and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (38)
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