Devaraju, M.K.Yin, S.Sato, T.2025-12-172025-12-172009European Journal of Inorganic Chemistry, 2009; 2009(29-30):4441-44451434-19481099-0682https://hdl.handle.net/11541.2/129788Tm3+-doped Y2O3 nanocrystals were prepared via hydrothermal conditions at high autogenous pressure (ca 40 MPa) using batch reactors at 220 and 250 degrees C for very short periods of reaction time (10 min). The as-prepared materials were identified as Y(OH)(3) nanoparticles The precursor materials with two types of morphologies, such as sphere and rod-shaped particles were prepared at 220 and 250 degrees C within 10 min. The sizes of the as-prepared sphere particles are 1015 nil. in diameter, whereas the rod-shaped particles show 15-20 nm in diameter and 0.1-0.2 mu m to lengths The precursor materials were calcined at 500 and 800 degrees C for 5 h in air to obtain (3 mol-%) Tm3+-doped Y2O3 nanocrystals For the characterization, KRD, FESEM, EDS and TG-DTA were employed. The photoluminescence spectra of sphere and rod-shaped particles show higher blue emission at 450 nm than the reference sample.enCopyright 2008 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.hydrothermal synthesisnanostructureluminescencelathanidesthuliumyttriumJournal article10.1002/ejic.2009005112-s2.0-70350170614