NDLI: Investigation on Structural and Optical Properties of Willemite Doped Mn 2 + Based Glass-Ceramics Prepared by Conventional Solid-State Method

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Investigation on Structural and Optical Properties of Willemite Doped Mn 2 + Based Glass-Ceramics Prepared by Conventional Solid-State Method

Content Provider	Semantic Scholar
Author	Samsudin, Nur Farhana Matori, Khamirul Amin Liew, Josephine Ying Chi Fen, Yap Wing Zaid, Mohd Hafiz Mohd Alassan, Zarifah Nadakkavil
Copyright Year	2015
Abstract	Mn-doped willemite (Zn 2 SiO 4 :Mn) glass-ceramics derived from ZnO-SLS glass system were prepared by a conventional meltquenching technique followed by a controlled crystallization step employing the heat treatment process. Soda lime silica (SLS) glass waste, ZnO, and MnO were used as sources of silicon, zinc, and manganese, respectively. The obtained glass-ceramic samples were characterized using the X-ray diffraction (XRD), Field Emission Scanning ElectronMicroscopy (FESEM), Fourier Transform Infrared (FTIR), UV-Visible (UV-Vis), and photoluminescence (PL) spectroscopy. The results of XRD revealed that ZnO crystal and willemite (β-Zn 2 SiO 4 ) were presented as major embedded crystalline phases. This observation was consistent with the result of FESEM which showed the presence of irregularity in shape and size of willemite crystallites. FTIR spectroscopy exhibits the structural evolution of willemite based glass-ceramics. The optical band gap shows a decreasing trend as the Mn-doping content increased. Photoluminescent technique was applied to characterize the role ofMn ions when entering the willemite glass-ceramic structure. By measuring the excitation and emission spectra, the main emission peak of the glass-ceramic samples located at a wavelength of 585 nm after subjecting to 260 nm excitations. The following results indicate that the obtained glass-ceramics can be applied as phosphor materials.
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://downloads.hindawi.com/journals/jspec/2015/730753.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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