Plasmon-enhanced upconversion in Yb3+/Er3+ doped inY2O3

In this paper, we study the computational modeling of the localized surface plasmonic and scattering field effect arising from of gold nanorods. We also report the synthesis and optical characterization of core-spacer-shell nanocomposites composed of gold nanorods coated with SiO2 and finally coated with Y2O3:Er3+/Yb3+ (Aunanorods@mSiO2@Y2O3:Er3+/Yb) through a layer-by-layer method. Preliminary upconversion analysis of singly (Aunanorods@mSiO2@Y2O3:Er3+/Yb) at 980 excitation indicates that the composition has to be optimized to understand the role of silica as a spacer and near field enhancer (gold nanorod) in the system.

[1]  Arturo A. Ayon,et al.  Nanostructured thin film silicon solar cells efficiency improvement using gold nanoparticles , 2012 .

[2]  D. Sardar,et al.  Synthesis and spectroscopy of color tunable Y2O2S:Yb3+,Er3+ phosphors with intense emission , 2012 .

[3]  Madhab Pokhrel,et al.  Comparative studies of the spectroscopic properties of Nd 3+ : YAG nanocrystals, transparent ceramic and single crystal , 2012 .

[4]  Catherine J. Murphy,et al.  Seed-Mediated Synthesis of Gold Nanorods: Role of the Size and Nature of the Seed , 2004 .

[5]  A. Tsin,et al.  Enhancement of nonlinear optical properties of BaTiO3 nanoparticles by the addition of silver seeds. , 2012, Optics express.

[6]  D. Reinhoudt,et al.  Fluorescence quenching of dye molecules near gold nanoparticles: radiative and nonradiative effects. , 2002, Physical review letters.

[7]  Richard H. Friend,et al.  An improved experimental determination of external photoluminescence quantum efficiency , 1997 .

[8]  Christopher B. Murray,et al.  Metal-enhanced upconversion luminescence tunable through metal nanoparticle-nanophosphor separation. , 2012, ACS nano.

[9]  Xiaohong Sun,et al.  Fabrication of Ag@SiO(2)@Y(2)O(3):Er nanostructures for bioimaging: tuning of the upconversion fluorescence with silver nanoparticles. , 2010, Journal of the American Chemical Society.

[10]  R. W. Christy,et al.  Optical Constants of the Noble Metals , 1972 .

[11]  Mostafa A. El-Sayed,et al.  Why Gold Nanoparticles Are More Precious than Pretty Gold: Noble Metal Surface Plasmon Resonance and Its Enhancement of the Radiative and Nonradiative Properties of Nanocrystals of Different Shapes , 2006 .

[12]  S. Balaji,et al.  Optical characterization of Er3+and Yb3+ co-doped barium fluorotellurite glass , 2012 .

[13]  Oliver Benson,et al.  Plasmon-enhanced upconversion in single NaYF4:Yb3+/Er3+ codoped nanocrystals. , 2010, Nano letters.

[14]  Hong Zhang,et al.  Upconversion luminescence of β-NaYF4: Yb3+, Er3+@β-NaYF4 core/shell nanoparticles: Excitation power density and surface dependence , 2009 .

[15]  A. Cheetham,et al.  Red-emitting cerium-based phosphor materials for solid-state lighting applications , 2006 .

[16]  S. Rai,et al.  Enhanced upconversion emission in Er3+-doped tellurite glass containing silver nanoparticles , 2010 .