2021-7-16 · Iron pentacarbonyl FeCO 5 and H 2 Se have generally and extensively been used for the fabrication of FeSe at a flow rate of 31×10 −6 and 15×10 −4 mol min −1 by separate mass flow controllers under hydrogen with flow rate of 191 min −1 and 99999 purity for 30 min at 260 °C