Krishanu Dey is a Cambridge India Ramanujan PhD scholar in Physics at the Cavendish Laboratory, University of Cambridge and is a member of Churchill College.
Belonging to a remote border town in the state of Assam in India, Krishanu was always fascinated by light-electricity or photon-electron interactions that have revolutionised many modern-day electronic inventions. Solar photovoltaic research really appealed to him and he had experience of working on solar-driven water splitting and a variety of photovoltaic material technologies. These included III-V tandem solar cells, CIGS solar cells and perovskite solar cells.
In his PhD, Krishanu is using a host of optical spectroscopy and electrical methods to unravel various fundamental optoelectronic properties of mixed lead-tin halide perovskite materials which are key components of the next generation all-perovskite tandem solar cells. He also uses many of the insights obtained from such fundamental studies to fabricate lab-scale high efficiency mixed lead-tin perovskite solar cells with minimised loss channels.
The Hudswell International Research Scholarship will help him to explore halide perovskite materials for the reverse process of light emission by developing several internal and external collaborations. The scholarship will support him in disseminating his work at major international scientific conferences in the coming year.