High-energy optical transitions and optical constants of CH${}_3$NH${}_3$PbI${}_3$ measured by spectroscopic ellipsometry and spectrophotometry

Christopher G. Bailey, Giacomo M. Piana, Pavlos G. Lagoudakis

Optoelectronics based on metal halide perovskites (MHPs) have shown substantial promise, following more than a decade of research. For prime routes of commercialization such as tan…