Bilir G. – TechConnect Briefs

Effect of Pressure and Excitation Power on Up-conversion Assisted White Light Emission in Yttrium Oxide and Silicate Nanophosphors

Eryurek G., Erdem M., Bilir G., Istanbul Technical University, TR

The production of warm artificial white light (WL) become a big challenge of engineers and scientists after the revolutionary introduction of incandescent lamp by Thomas Edison. Although several strategies have been developed in past, none [...]

Upconversion emission properties and un-expected white light emission from Er3+/Yb3+ doped Gd2O3 nano – phosphors

Bilir G., Erguzel O., Eryurek G., Istanbul Technical University, TR

Gd2O3 nano-powders doped with Er3+ and Yb3+ were synthesized using the combustion method. X-ray diffraction and the scanning electron microscope techniques were used to estimate the crystalline sizes and the morphologies of the materials. The [...]

Structural and Optical Properties of Rare Earth Nano-Crystalline Oxides Embedded in Polymethyl Methacrylate

Tabanli S., Bilir G., Erdem M., Eryurek G., Istanbul Technical University, TR

In this study, various ratio and sizes of Nd2O3, Yb2O3 and Er2O3 nano-crystalline oxides were doped into polymethyl methacrylate (PMMA) host material. PMMA is an amorphous, thermoplastic polymer with an optical transparency region from 300 [...]