TY - JOUR ID - 15044 TI - Synthesis and photoluminescence study on europium ion activated titania nanoparticle JO - Advanced Materials Letters JA - AML LA - en SN - 0976-3961 AU - Nando Singhi, Thoudam AU - Gomti Devi, Thongam AU - Dorendrajit Singh, Shougaijam AD - Y1 - 2017 PY - 2017 VL - 8 IS - 4 SP - 557 EP - 564 KW - Titania KW - Nanoparticle KW - photoluminescence KW - lifetime KW - judd KW - ofelt DO - 10.5185/amlett.2017.1432 N2 - Eu 3+ doped TiO2 (0.2-1at. %) is synthesized successfully by non-aqueous sol-gel technique at low temperature. They are characterized structurally and optically with the used of X-ray diffraction (XRD), UV-visible spectrophotometer, Photoluminescence (PL), microscopy (SEM) and Transmission electron microscopy (TEM). The anatine toretile phase transition is observed at 750 o C and lattice distortion ratios are reduced whereas crystallites sizes are found to increase with increases of temperature. The emission spectrum under excitation at the 7 F0→ 5 L6 (393nm) transition of the Eu 3+ ion shows broad emission bands arising from the 5 DJ (J=0, 1) levels and with the emission decays lifetime varying between 0.243 and 0.375ms for samples prepared at different temperatures. The Judd-Ofelt intensity parameters W2 are found in the range 6.57 - 17.14 x10 -20 cm 2 at different concentrations and temperatures. Quantum yield of all the samples are more than 80% at different temperature. The average decay lifetime decreases with the increase of Eu 3+ concentration.  UR - https://aml.iaamonline.org/article_15044.html L1 - https://aml.iaamonline.org/article_15044_7225c4f541fc22b3f756d970cfcf69f5.pdf ER -