Photodetectors

Towards single photon sensing

The figures below show how bandgaps can be tuned with lattice constant in III-V and II-VI alloys. Clearly going down the column of a periodic table makes the lattice constant go up and the bandgap go down. Our focus is on building a detailed model of the underlying materials chemistry of optoelectronic materials, understand the impact on band-alignment and build transport models that connect them with optoelectronic properties, such as detectivity in Mid-IR photodiodes, or gain-bandwidth product in III-V avalanche photodetectors.