TY - JOUR
T1 - Synthesis and upconversion luminescence of NaYF 4:Yb, Tm/TiO 2 core/shell nanoparticles with controllable shell thickness
AU - Zhang, Daisheng
AU - Zhao, Dan
AU - Zheng, Kezhi
AU - Liu, Ning
AU - Qin, Weiping
PY - 2011
Y1 - 2011
N2 - NaYF 4:Yb, Tm/TiO 2 core/shell nanoparticles were synthesized by a two-step method. First, the NaYF 4:Yb, Tm nanocrystals were prepared using solvothermal technology; then, TiO 2 shells were deposited on the nanocrystals by the hydrolysis of titanium ethoxide (TEOT) to form core/shell structures. By controlling the reaction time, we can adjust the thickness of TiO 2 shell and thereby the weight percentage of TiO 2 in the core/shell nanoparticles. The effect of shell thickness on the upconversion fluorescence of NaYF 4:Yb, Tm nanocrystals was investigated in detail.
AB - NaYF 4:Yb, Tm/TiO 2 core/shell nanoparticles were synthesized by a two-step method. First, the NaYF 4:Yb, Tm nanocrystals were prepared using solvothermal technology; then, TiO 2 shells were deposited on the nanocrystals by the hydrolysis of titanium ethoxide (TEOT) to form core/shell structures. By controlling the reaction time, we can adjust the thickness of TiO 2 shell and thereby the weight percentage of TiO 2 in the core/shell nanoparticles. The effect of shell thickness on the upconversion fluorescence of NaYF 4:Yb, Tm nanocrystals was investigated in detail.
KW - Core/Shell
KW - NaYF
KW - Rare Earth
KW - TiO
KW - Upconversion Luminescence
UR - http://www.scopus.com/inward/record.url?scp=84863139892&partnerID=8YFLogxK
U2 - 10.1166/jnn.2011.5251
DO - 10.1166/jnn.2011.5251
M3 - Article
AN - SCOPUS:84863139892
SN - 1533-4880
VL - 11
SP - 9761
EP - 9764
JO - Journal of Nanoscience and Nanotechnology
JF - Journal of Nanoscience and Nanotechnology
IS - 11
ER -