Photoluminescence Spectroscopy of many-body Effects in Heavily Doped Al${}_x$Ga${}_{1-x}$As

Subhasis Ghosh, Niladri Sarkar

We present an experimental investigation of heavy doping-induced many-body effects such as band gap narrowing(BGN) and Fermi edge singularity(FES) in Al${}_x$Ga${}_{1-x}$As using photo…