Синтез наноструктурованих порошків ітрій-алюмінієвого гранату, активованого іонами церію і їхнє застосування для формування наповнених полімерних оптичних композитів

• Date: 2017
• Main Authors: Davydova, O. V., Drobyshevskaya, N. E., Poddenezhny, E. N., Boiko, A. A., Borysenko, M. V.
• Format: Article
• Language: Russian
• Published: Chuiko Institute of Surface Chemistry National Academy of Sciences of Ukraine 2017
• Subjects: наноструктуровані порошки; ітрій-алюмінієвий гранат; церій; наповнені полімерні композити
• Online Access: https://www.cpts.com.ua/index.php/cpts/article/view/432
• Journal Title: Chemistry, Physics and Technology of Surface

A method of thermochemical synthesis of powders of yttrium-aluminum garnet doped with cerium (yellow phosphor) for polymer material filling with the purpose of optical composites creation has been developed. As initial ingredients for the synthesis of Y2.95Ce0.05Al5O12; Y(NO3)3•6Н2О, Al(NO3)3•9Н2О, Се(NO3)3•6Н2О and two kinds of organic fuel, sucrose (C12H22O11) and carbamide (СO(NH2)2) with the addition of hexamethylenetetramine ((CH2)6N4) were used. The obtained samples were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA) and photoluminescence spectroscopy. It is found that primary particle diameter of YAG:Ce (average size of the coherent scattering) is 45 nm. Filled Polymer Composites (FPC) was formed by extrusion in the form of tape using as matrix a transparent high-density polyethylene. It has been established that the FPC luminesces with a maximum at the wavelength of 560 nm (yellow light) when excited at the wavelength of 465 nm (blue LED), and the total emission from the composite shows a bright white light.