Single-Source Vapor Deposition of Quantum-Cutting Yb3+:CsPb(Cl1–xBrx)3and Other Complex Metal-Halide Perovskites

• DOI: 10.1021/acsaem.9b00910
• Publication Date: 2019-05-24T20:43:41Z
• Authors: Matthew J. Crane; Daniel M. Kroupa; Joo Yeon Roh; Rayne T. Anderson; Matthew D. Smith; Daniel R. Gamelin
• Keywords: Quantum Efficiency

Metal-halide semiconductors exhibit attractive properties for a host of applications including photovoltaics, solid-state lighting, and photodetection. Among the remarkable recent developments is discovery extraordinarily high photoluminescence quantum yields in Yb3+-doped inorganic lead-halide perovskites. Although all previous research development such quantum-cutting materials has involved solution-phase preparation, particularly as colloidal nanocrystals, methods can introduce both processing technical challenges that limit scope accessible compositions, morphologies, scaled-up applications. Here, we demonstrate scalable single-source vapor deposition (SSVD) method depositing high-quality conformal thin films complex metal-halide perovskites, doped over large areas at rates. Focusing on Yb3+:CsPb(Cl1–xBrx)3, large-area with 183%, starting from powders prepared mechanochemically solid ionic precursors. We also prepare solar absorber material (FA0.81MA0.14Cs0.05)Pb(Cl0.02Br0.14I0.84)3 to illustrate generality this SSVD method. These results promising approach high-throughput coatings photonic optoelectronic