Ultraflat single-crystal hexagonal boron nitride film grown on Cu/Ni (1 1 1) for high-performance deep ultraviolet photodetectors - Xin Zhang; Hongying Yang; Zhen Su; Yuqing Tian; Yuming Feng; Yanan Ding; Huiwen Ren; Linben Ling; Xiaolei Chen; Haiying Xiao; PingAn Hu (Chemical Engineering Journal, 2025)