Stability, structural, optical, and morphological properties of cesium lead bromine films deposited by laser ablation

Anna Paola Caricato; Chiara Provenzano; Mario Calora; Marcella Marra; Gianluca Quarta; Maria Rachele P. Guascito; Maura Cesaria; Maurizio Martino; Lucio Calcagnile

doi:10.1117/12.3016548

11 April 2024 Stability, structural, optical, and morphological properties of cesium lead bromine films deposited by laser ablation

Anna Paola Caricato, Chiara Provenzano, Mario Calora, Marcella Marra, Gianluca Quarta, Maria Rachele P. Guascito, Maura Cesaria, Maurizio Martino, Lucio Calcagnile

Author Affiliations +

Proceedings Volume 12939, High-Power Laser Ablation VIII; 129390A (2024) https://doi.org/10.1117/12.3016548
Event: SPIE High-Power Laser Ablation, 2024, Santa Fe, New Mexico, United States

Abstract

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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Anna Paola Caricato, Chiara Provenzano, Mario Calora, Marcella Marra, Gianluca Quarta, Maria Rachele P. Guascito, Maura Cesaria, Maurizio Martino, and Lucio Calcagnile "Stability, structural, optical, and morphological properties of cesium lead bromine films deposited by laser ablation ", Proc. SPIE 12939, High-Power Laser Ablation VIII, 129390A (11 April 2024); https://doi.org/10.1117/12.3016548

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