@article{article_334427, title={Concentration and Cyrstalline Phase Effects on the Spectroscopic Properties of Sol-Gel Synthesized Er<sup>3+</sup>:Y<sub>2</sub>Si<sub>2</sub>O<sub>7</sub> Nanopowders}, journal={Süleyman Demirel Üniversitesi Fen Bilimleri Enstitüsü Dergisi}, volume={21}, pages={173–177}, year={2017}, DOI={10.19113/sdufbed.05477}, author={Erdem, Murat and Örücü, Hümeyra}, keywords={Yttrium disilicate,Nanophosphors; Phase properties; Sol-Gel}, abstract={&lt;p&gt;Nanosized yttrium disilicate powders activated with trivalent erbium ions were produced by Sol-Gel known as wet chemical process. The structure and morphology of the synthesized powders were characterized by using X-ray diffraction spectroscopy (XRD), Transmission electron microscopy (TEM) and Photoluminescence spectroscopy. The XRD analysis revealed that the formation of triclinic  a-Y &lt;sub&gt;2 &lt;/sub&gt;Si &lt;sub&gt;2 &lt;/sub&gt;O &lt;sub&gt;7 &lt;/sub&gt; and monoclinic  b-Y &lt;sub&gt;2 &lt;/sub&gt;Si &lt;sub&gt;2 &lt;/sub&gt;O &lt;sub&gt;7 &lt;/sub&gt;polymorphs were obtained at 1050  and 1450 , respectively. The photoluminescence properties were also investigated in terms of sintering temperature and doping effect on different polymorphs. &lt;/p&gt;}, number={1}, publisher={Süleyman Demirel University}