A method and an apparatus for detecting photons are disclosed. The apparatus includes a solid state photo multiplier device having a plurality of microcells that have a band gap greater than about 1.7 eV at 25° C. The solid state photo multiplier device further includes an integrated quenching device and a thin film coating associated with each of the microcells. The solid state photo multiplier device disclosed herein operates in a temperature range of about −40° C. to about 275° C.
