Persistent luminescence properties of SrB X Al 2−X O 4 :Eu,Dy laser-sintered ceramics
Source abstract
Abstract
Abstract This paper describes the use of a laser sintering technique to produce persistent luminescence SrAl2O4:Eu2+Dy3+ ceramics, doped with boron that exhibit enhanced translucency in the visible/near infrared spectral range. In this technique, a CO2 laser is used as the main heat source for sintering with no atmospheric control. The ceramics, sintered at a power density of 3.1 W/mm2, yielded a single monoclinic SrAl2O4 phase, a homogeneous grain size distribution, and transmittance of up to 50% over 400 nm–800 nm. Even when sintered in air, the ceramics exhibited the characteristic green emission from Eu2+ ions, which corresponds to the 5d → 4f transition at 514 nm. The method of inserting the boron into the matrix is the key to improving the transparency of ceramics.
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Research context
OpenAlex topics: Luminescence Properties of Advanced Materials · Glass properties and applications · Solid State Laser Technologies
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