Photoreflectance and Photoluminescence Study of Antimony Selenide Crystals.

Among inorganic, Earth-abundant, and low-toxicity photovoltaic technologies, SbSe has emerged as a strong material contender reaching over 10% solar cell power conversion efficiency. Nevertheless, the bottleneck of this technology is the high deficit of open-circuit voltage ( ) as seen in many other emerging chalcogenide technologies. Commonly, the loss of is related to the nonradiative carrier recombination through defects, but other material characteristics can also limit the achievable .