Journal of Nanomedicine & Nanotechnology

Lanthanides doped inorganic nanocrystals

11^th International Conference and Expo on Nanoscience and Molecular Nanotechnology

October 20-22, 2016 Rome, Italy

Artur Podhorodecki

Wroclaw University of Technology, Poland

Posters & Accepted Abstracts: J Nanomed Nanotechnol

Abstract:

Over the past decade, high-quality rare earth doped nanocrystals (RENCs) have been successfully synthesized with the rapid development of nanotechnology. Several materials have been successfully applied so far as efficient matrix for RE3+ combinations, where the low crystal field symmetry and low phonon frequency are the main factors defining the best matrix selection. These materials have already found several potential applications in biology, medicine as well as in photovoltaics and photocatalysis, as the most common examples. However, to change their commercial potential to real devices, still several problems must be solved, where low emission quantum efficiency (EQE) and controlling their surface properties are the most important ones. The EQE is directly related with the other challenges in this field: Growth of small size <10 nm RENCs, their shape and architecture control. To solve all abovementioned problems, the correlation between technological, morphological and physical parameters is needed. This is however a difficult task because the system itself is very complicated and consists of number of correlated parameters. In this work, we will discuss synthesis and optical properties of down-shifting NaGdF4 NCs based on Eu3+ emission and NaGdF4 up-converting NCs based on Yb3+-Er3+ emission. We will discuss how to control their size, shape and core-shell architecture. Finally, based on our work on nanocrystals surface functionalization and their toxicity tests, we will briefly discuss potential use of RENCs in biology and medicine.

Biography :

Email: artur.p.podhorodecki@pwr.edu.pl