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- W4282927013 abstract "All-inorganic perovskites are considered as preferred materials for next-generation X-ray detectors. However, preparing high-quality thick films by traditional solution-based methods remains challenging due to the low solubility of the precursors. In this work, chemical vapor deposition technology is employed to grow Si-based all-inorganic cesium-lead-bromide perovskite thick films. By introducing a SnO2 nanocrystal interlayer onto the Si substrate to facilitate the heterogeneous nucleation of the perovskite, we are able to grow high-quality films with a smooth surface and compact grains at a relatively low substrate temperature of 260 °C. The resultant X-ray detectors exhibit a decent sensitivity of 2930 μC Gyair-1 cm-2, a small dark current density of 1.5 nA cm-2, and a low detection limit of 120 nGyair s-1. Moreover, the devices show excellent biasing stability with a record small baseline drift of 4.6 × 10-9 nA cm-1 s-1 V-1 under a large electric field of 1100 V/cm among all perovskite polycrystalline film-based detectors ever reported." @default.
- W4282927013 created "2022-06-16" @default.
- W4282927013 creator A5033189948 @default.
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- W4282927013 date "2022-06-09" @default.
- W4282927013 modified "2023-10-14" @default.
- W4282927013 title "Interlayer-Assisted Growth of Si-Based All-Inorganic Perovskite Films via Chemical Vapor Deposition for Sensitive and Stable X-ray Detection" @default.
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- W4282927013 doi "https://doi.org/10.1021/acs.jpclett.2c01389" @default.
- W4282927013 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/35679535" @default.
- W4282927013 hasPublicationYear "2022" @default.
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