- Solid state chemistry
- Inorganic chemistry not elsewhere classified
- Chemical characterisation of materials
Engineering and technology
- Materials synthesis
Our digital world is growing at great speed implying the constant need for improving the network quality, broadening band widths allowing fast data traffic. Electro-optical modulators are used in these state-of-the-art networks and are much faster that classic electrical switches. Tuned constructive and destructive interaction of light waves is achieved by changing the refractive index of the modulator material. A piezoelectric material as Pb(Zr,Ti)O3 is often used in these kind of modulators. These systems use lead-based precursors stimulating the search for “greener” and “superior” alternatives. We aim at the integration of a material with high Pockels coefficient for electro-optical modulation on state-of-the-art SiN photonic platforms by a low-cost and efficient methods paving the path towards industrial integration. In this project, we investigate the integration of lead-free epitaxial BaTiO3 thin films on SiN photonic platforms by using an intermediate seed La2O2CO3 layer locally deposited by ink-jet printing as the chemical solution deposition technique of choice. This allows the construction of a 2D electro-optic thin BaTiO3 layer pattern on SiN platforms without the use of additional etching steps.