title: Colloidal Organometal Halide Perovskite (MAPbBrxI3-x, 0≤x≤3) Quantum Dots: Controllable Synthesis and Tunable Photoluminescence.
abstract: Organic-inorganic perovskite materials, typically methylammonium lead trihalide (MAPbX3: MA = methylammonium; X = Br, I), are recently attract enormous attention for their distinguished photo-electronic properties. The control of morphology, composition and dispersability of MAPbX3perovskite nanocrystals is crucial for the property tailoring and still a major challenge. Here we report the synthesis of colloidal MAPbBrxI3-x(0 ≤ x ≤ 3) nanocrystals at room temperature by using alkyl carboxylate as capping ligands. These nanocrystals exhibit continuously tunable UV-vis absorption and photoluminescence (PL) across the visible spectrum, which is attributed to the quantum confinement effect with certain stoichiometry. Their unique exciton recombination dynamics was investigated and discussed.
authors: State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Advanced Microstructures, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, PR China.
authors: Ying
authors: Y
authors: Zhao
authors: School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, PR China.
authors: Xiangxing
authors: X
authors: Xu
authors: State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Advanced Microstructures, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, PR China.
authors: Xiaozeng
authors: X
authors: You