Recent Progress on the Performance of Lead‐Based Halide Perovskite APbX₃ Detectors

Abstract

Lead‐based halide perovskites APbX3 are likely to become competitive candidates in applications of photodetectors and X/γ‐ray detectors owing to their excellent optical and electrical characteristics, such as high and balanced carrier mobility, long carrier diffusion length, and adjustable bandgap. Based on this system, the article summarizes the performance parameters, such as responsivity, detectivity, external quantum efficiency, and response time of photodetector, and generalizes the research status of its application in near‐infrared light, visible light, and ultraviolet light photodetectors. In addition to that, it also summarizes the recent progress of X/γ‐ray detectors. What is more, the influence of radii of A‐site cations on the photoelectric performance are discussed. Finally, based on these summary and discussion, a research trend could be raised that more and more researchers tend to fabricate APbX3 perovskite with single‐crystalline thin‐film for high‐performance photodetectors in the future. It is proposed that if the A‐site ion is an organic group with a larger radius than the formamidinium (FA+), it may have better photoelectric properties than FAPbX3. Inorganic lead‐based perovskite single crystals with few defects, fast carrier mobility, and good stability are beneficial for attaining low dose rate and high‐energy resolution X/γ‐ray detectors.

Exploring the Limits: Degradation Behavior of Lead Halide Perovskite Films under Exposure to Ultrahigh Doses of γ Rays of Up to 10 MGy

“…The discovery and rapid development of lead halide perovskites have had a strong impact on different fields of science and technology. , In addition to the impressive progress of perovskite solar cells, which deliver now efficiencies of >25.7%, perovskite semiconductors based on complex lead halides have provided tremendous opportunities to improve chemical sensors, photodetectors, and detectors of ionizing radiation, in particular X-rays and γ rays. − The latter applications as well as the featured implementation of perovskite solar cells in space , require very high radiation hardness from these materials. Indeed, perovskite absorber films and solar cells could successfully tolerate high electron, proton, and neutron fluences as well as γ rays and X-rays. , Among different types of ionizing radiation, γ rays have very high penetration ability and hence could hardly be mitigated by simple shielding used to suppress the damage caused by proton and electron fluences .…”

Fast ultraviolet detection response achieved in high-quality Cs3Bi2Br9 single crystals grown by an improved anti-solvent method

“…13 Consequently, it can lead to diminished photocurrent and lower efficiency than lead-based perovskite photodetectors. 31…”

Perovskite quantum dots embedded paper photodetectors with high flexibility and self-powered operation

“…18,19 In particular, metal halide perovskite detectors have been extensively explored in various light detection regions, including near-infrared, visible, ultraviolet, and X/g-ray detectors, thanks to their exceptional optical and electrical properties. 20 In addition, halide perovskite-based flexible photodetectors have been identified as key components in wearable and portable electronics, benefiting from innovative device architectures and encapsulation strategies to enhance their optoelectronic and mechanical properties. 21 Nevertheless, many reported flexible perovskite devices are based on perovskite polycrystalline films, which are not mechanically robust to fractures along grain boundaries and may hinder their application in highly deformed circumstances.…”