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Influence of Sintering Duration on Crystal Phase and Optical Band Gap of Mn -Doped Willemite-Based Glass-Ceramics

Journal of Electronic Materials, ISSN: 1543-186X, Vol: 51, Issue: 3, Page: 1163-1168
2022
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A conventional melt quenching technique was used to successfully fabricate MnO -doped willemite glass-ceramics (ZnSiO:Mn) produced from the ZnO-SLS glasses. The results from XRD revealed that willemite crystallization is improved by increasing the sintering duration. It was revealed that, as the sintering duration progressed, the phase formation shifted from amorphous to α-ZnSiO crystal. In addition, the structural growth of willemite phases can be seen using FTIR spectroscopy. The results of UV-Vis spectroscopy indicated that the intense absorption occurs in the UV zone, with wavelengths ranging from 250 nm to 400 nm, while the optical band gap showed a decreasing trend from 3.61 eV to 2.52 eV. These results perfectly established that Mn dopant is potentially beneficial for producing willemite glass-ceramics for optoelectronic applications.

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