Attempting to realize n-type BiCuSeO

BiCuSeO is an intrinsic p-type semiconductor, and the maximum ZT of 1.5 was achieved after several years efforts in the thermoelectric community since 2010, however, n-type BiCuSeO has not been reported so far. Here, we reported that n-type BiCuSeO can be realized, and a ZT value of 0.05 at 475 K was obtained in Bi1.04Cu1.05Se0.99Br0.01O+15% Ag.248