Study on the fabrication and optical properties of core/shell CdS/LaPO4:Eu nanorods

(Arik Kar, et al. J. Mater. Chem., 2010, 20, 916): In this contribution, we have reported the preparation of core/shell CdS/LaPO4:Eu nanorods via a three-step chemical route using citric acid as a capping reagent. The core/shell heterostructure is confirmed by X-ray diffraction studies and transmission electron microscopy (TEM) analysis. The crystal phase of LaPO4 (shell) changes with changing the temperature by heating. It is found that the lattice strain is modified from tensile to compressive by changing the crystal phase of the LaPO4 (shell). We have found that the photoluminescence properties are sensitive to the crystal phase of the LaPO4 shell, which can be tuned by temperature of heating. From the decay time measurements, we have observed effective energy transfer from core CdS nanorods to Eu3+ ions in the LaPO4 shell. The experimental quantum efficiency is found to be 47% for CdS/LaPO4:Eu which is due to energy transfer from CdS to Eu3+ ions in the LaPO4 shell. I have presented two poster presentations onthis work at the International Conference on Nano Science and Technology (ICONSAT-2010)held at IIT Bombay, Mumbai and International Symposium on Advances in Nanomaterials(ANM 2010) held at Central Glass and Ceramic Research Institute, Kolkata. (JournalI.F=6.63, Total Citation-50).