Synthesis of semiconductor and metal nanoparticles

1.     Synthesis of semiconductor nanoparticles by laser ablation

The main goal of the project is to develop laser ablation modes for the synthesis of colloidal solutions of nanoparticles in various solvents. Semiconductor nanoparticles (silicon, tungsten disulfide, gallium phosphide, and others) are used as materials for synthesis. The received nanoparticles will be integrated into perovskite solar cells and LEDs to improve the output characteristics of the devices.

It is planned to use various sources of laser radiation with different pulse duration, pulse repetition rate, and laser power to obtain nanoparticles of different sizes in the required solvents. Collaboration with other ITMO laboratories is underway.

Also, work is underway to develop methods for the separation of colloidal solutions of nanoparticles to achieve monodisperse solutions of nanoparticles.


2. Synthesis of core-shell gold / silicon oxide nanoparticles

Gold nanoparticles are synthesized by laser ablation, after which the stabilized particles in a solution of polyvinylpyrrolidone are coated with a silicon oxide shell. These particles can be embedded in perovskite photovoltaic devices since the silicon oxide coating prevents gold from oxidizing in the aggressive perovskite environment.