文摘
A novel all-inorganic perovskite CsPb2Br5 microplate with superior crystallinity, enhanced stability, and tunable optical properties is reported by combining experimental and theoretical studies. The microplate developed in article number 1600788 by Juan Du, Miao Zhou, and co-workers exhibits surprisingly low-threshold amplified spontaneous emission under both one- and two-photon excitation, which is related to its unique spatially distinguished valence/conduction band edge states originating from the intrinsic sandwiched structure.