Fabrication of two domain Cu2O(0Â 1Â 1) films on MgO(0Â 0Â 1) by pulsed laser deposition

► The single orientated Cu2O(0 1 1) films with two kinds of domains were successfully fabricated by PLD. ► The deposition process was monitored by in situ RHEED; oxidation state of Cu for the as grown films was investigated by in situ XPS and XAES. ► The in-plane and out-of-plane orientation of Cu2O(0 1 1) films were determined, the formation mechanism was also discussed. ► The optical band gap was determined by using the linear extrapolation method from the (αE)2versus photon energy plot since.