Unveiling the Excited-State Dynamics of Mn²⁺ in 0D Cs₄PbCl₆ Perovskite Nanocrystals.

ABSTRACT: Doping is an effective strategy for tailoring the optical properties of 0D Cs₄PbX₆ (X = Cl, Br, and I) perovskite nanocrystals (NCs) and expanding their applications. Herein, a unique approach is reported for the controlled synthesis of pure-phase Mn²⁺-doped Cs₄PbCl₆ perovskite NCs and the excited-state dynamics of Mn²⁺ is unveiled through temperature-dependent steady-state and transient photoluminescence (PL) spectroscopy. Because of the spatially confined 0D structure of Cs₄PbCl₆ perovskite, the NCs exhibit drastically different PL properties of Mn²⁺ in comparison with their 3D CsPbCl₃ analogues, including significantly improved PL quantum yield in solid form (25.8%), unusually l

SUBMITTER: Zhang W 

PROVIDER: S-EPMC7675042 | biostudies-literature | 2020 Nov

REPOSITORIES: biostudies-literature