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4th Edition of World Nanotechnology Conference

April 25-27, 2022

April 25 -27, 2022 | Las Vegas, USA
2021 Speakers

Thriving narrow band gap ferroelectric oxides for photovoltaic applications

Fábio Figueiras, Speaker at
Instituto de Nanociência e Nanotecnologia, Portugal
Title : Thriving narrow band gap ferroelectric oxides for photovoltaic applications


The formation of a ferroelectric Bi2ZnTiO6 (BZT) perovskite-like phase in the thin film form is demonstrated to be viable onto Pt/Si-based substrates at 550 ºC using the rf-sputtering method. This “lead-free” BZT polycrystalline phase has a noncentrosymmetric P4mm tetragonal structure, exhibiting a noteworthy piezoelectric response and an optical gap of 1.48 eV in agreement with the theoretical calculations. Further research and development of BZT thin films can be regarded as a thriving material for innovative generation of optoelectronic and photovoltaic devices where the intrinsic polarization field can replace the function of p-n junctions in semiconductors.


PhD Researcher in Physics, Nanotechnology, Science and Engineering of Advanced Multifunctional Materials at IFIMUP, Portugal. Expertise in multiferroic oxides, thin film deposition, Nano powders synthesis, electric and magnetic characterization, atomic force microscopy, high resolution X-ray diffraction and Raman spectroscopy.