Temperature-dependent optical spectra of single-crystal (CH${}_3$NH${}_3$)PbBr${}_3$ cleaved in ultrahigh vacuum

Daniel Niesner, Oskar Schuster, Max Wilhelm +6

We measure temperature-dependent one-photon and two-photon induced photoluminescence from (CH3NH3)PbBr3 single crystals cleaved in ultrahigh vacuum. An approach is presented to ext…