Metal Halide Perovskites (MHPs) have garnered significant attention for several attractive properties, making them suitable for numerous applications, including light-emitting devices, lasers, photodetectors, solar cells, and radiation detectors. This study focuses on the deposition of MHPs via pulsed laser ablation (PLD), with a particular emphasis on CsPbBr3/Cs4PbBr6 films. The robust stability of PLD-deposited Cs-Pb-Br-based films over two years is demonstrated through an examination of their structural, optical, and emission properties of the films. They retain UV-Vis absorption characteristics and crystalline phases, with only a slight variation in peak intensity. Notably, a robust emission at 520 nm under 395 nm diode laser excitation is recorded two years after deposition, even without the presence of a protective layer. Our study point out that the choice of the deposition conditions is a critical factor to obtain film stability over time. Specifically, the films are deposited using a KrF laser beam at a background pressure of 10^-2 Pa and a target-substrate distance of 3 cm. The rationale behind choosing these conditions is discussed in relation to the unique aspects of the deposition process and their interplay with perovskite physics.
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