Halide perovskites and perovskite related materials for particle radiation detection

Liu, Fangze; Wu, Rong Gang; Zeng, Yicheng; Wei, Jing; Li, Hongbo; Manna, Liberato; Mohite, Aditya

doi:10.1039/d2nr01292h

Cited by 24 publications

(17 citation statements)

References 139 publications

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“…The APbX 3 Pb halide perovskites (HaPs), with A being a monovalent cation and X a halide anion, are attractive materials for inexpensive yet very efficient thin polycrystalline film solar cells, , light-emitting diodes, , and radiation , and particle detectors . However, doubts about the stability of the devices and even of the materials themselves overshadows their outstanding performance because, under certain conditions, HaPs degrade during exposure to intense radiation and humid conditions. , To date, most studies on stability have been done on complete devices with a multicomponent architecture, where it is likely that changes occur at interfaces and in the non-HaP parts of the devices .…”

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confidence: 99%

A-Site Cation Dependence of Self-Healing in Polycrystalline APbI₃ Perovskite Films

et al. 2023

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In terms of sustainable use, halide perovskite (HaP) semiconductors have a strong advantage over most other classes of materials for (opto)electronics, as they can self-heal (SH) from photodamage. While there is considerable literature on SH in devices, where it may not be clear exactly where damage and SH occur, there is much less on the HaP material itself. Here we perform “fluorescence recovery after photobleaching” (FRAP) measurements to study SH on polycrystalline thin films for which encapsulation is critical to achieving complete and fast self-healing. We compare SH in three photoactive APbI3 perovskite films by varying the A-site cation ranging from (relatively) small inorganic Cs through medium-sized MA to large FA (the last two are organic cations). While the A cation is often considered electronically relatively inactive, it significantly affects both SH kinetics and the threshold for photodamage. The SH kinetics are markedly faster for γ-CsPbI3 and α-FAPbI3 than for MAPbI3. Furthermore, γ-CsPbI3 exhibits an intricate interplay between photoinduced darkening and brightening. We suggest possible explanations for the observed differences in SH behavior. This study’s results are essential for identifying absorber materials that can regain intrinsic, insolation-induced photodamage-linked efficiency loss during its rest cycles, thus enabling applications such as autonomously sustainable electronics.

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confidence: 99%

A-Site Cation Dependence of Self-Healing in Polycrystalline APbI₃ Perovskite Films

et al. 2023

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“…[ 13,14 ] Typically, lead halide perovskite NSs with good solution processability and compatibility with flexible substrate have become a favored candidate for next‐generation flexible scintillators due to their strong X‐ray absorption and intense radioluminescence (RL). [ 15–19 ] Although the photoluminescence quantum yield (PLQY) of these lead‐based perovskite NSs have reached near unity, the RL light yield is still inferior to that of traditional inorganic single‐crystal scintillators due to their strong reabsorption effect deriving from the inherent small stokes shift. [ 20–22 ] Besides, the intrinsic instability caused by spontaneous phase transformation from photo‐active α‐phase to inactive δ‐phase at room temperature and high toxicity of lead component severely restrict their real‐world applications.…”

Section: Introductionmentioning

confidence: 99%

Mn²⁺‐Activated Cs₃Cu₂I₅ Nano‐Scintillators for Ultra‐High Resolution Flexible X‐Ray Imaging

Wang

Wei

Liu

et al. 2023

Laser & Photonics Reviews

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Zero‐dimensional (0D) copper‐based perovskite‐derivative nano‐scintillators (NSs), as a promising non‐toxic alternative to lead‐based halide perovskite, have shown great potential in flexible X‐ray detection and imaging. However, their practical applications are still impeded by low X‐ray imaging resolution associated with inadequate radioluminescence (RL) and poor environmental stability. Herein, for the first time a simple but valid Mn2+‐activation strategy is proposed to highly enhance the RL and stability of 0D Cs3Cu2I5 NSs, where the Mn2+ ions are embedded into the highly localized [Cu2I5]3− units by utilizing a modified hot‐injection method. As such, a newly emerged emission band of Mn2+ ion centered at ≈562 nm coupled with much improved intrinsic self‐trapped excitons (STE) emission of the 0D Cs3Cu2I5 host peaking at ≈445 nm can be achieved in these resultant Mn2+‐activated 0D Cs3Cu2I5 NSs, thereby delivering a light yield of 71 000 photons MeV−1 that is much superior to their lead‐based perovskite counterparts and commercial scintillators. As a consequence, X‐ray detectors made of these Mn2+‐activated NSs implement an ultrahigh X‐ray imaging resolution of 16.2 line pairs mm−1 and an ultra‐low detection limit of 127.5 nGyair s−1, highlighting their potential as promising candidates for flexible X‐ray detection and imaging.

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“…Lead‐free metal halides, in particular their hybrid derivatives with low‐dimensional molecular structure, such as (Bmpip) 2 SnBr 4 , [ 17 ] (PPN) 2 SbCl 5 , [ 18 ] and (TBA)CuBr 2 , [ 19 ] have shown excellent stability and luminescence properties due to their strong quantum confinement effect and large exciton binding energy. [ 20–23 ] The molecular dimensionality, polyhedral configuration, and luminescence behavior of hybrid metal halides are affected significantly by different organic cations. [ 24–26 ] Recently, low‐dimensional Mn‐based hybrids have been increasingly studied due to high photoluminescence quantum yield (PLQY), low detection limit, and excellent stability.…”

Section: Introductionmentioning

confidence: 99%

Red‐Emitting Organic–Inorganic Hybrid Manganese(II) Halides for X‐Ray Imaging

Zhou

Wang

et al. 2023

Advanced Sensor Research

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Low‐dimensional organic–inorganic hybrid manganese(II) halides are emerging as a highly promising class of candidate materials for X‐ray imaging due to their excellent radioluminescence performance. Here, a red‐emitting (Gua)2MnCl4 (Gua = guanidine, CH6N3+) single crystal scintillator grown by a simple solution‐processing method is reported. (Gua)2MnCl4 crystallizes into a zero‐dimensional (0D) crystal structure consisting of trimeric [Mn3Cl12]6− units. It has a high PLQY of 76% and a large Stokes shift of 125 nm. (Gua)2MnCl4 flexible scintillation screen demonstrates a decent X‐ray detection limit of 145.3 nGyair s−1 and a superior imaging resolution of 8 lp mm−1. These results highlight the potential of low‐dimensional red‐emitting Mn‐based hybrids for X‐ray imaging applications.

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Halide perovskites and perovskite related materials for particle radiation detection

Abstract: Radiation detectors are widely used in physics, material science, chemistry, and biology. Halide perovskites are known for their superior properties including tunable bandgaps and chemical compositions, high defect tolerance, solution-processable...

Cited by 24 publications

References 139 publications

A-Site Cation Dependence of Self-Healing in Polycrystalline APbI₃ Perovskite Films

A-Site Cation Dependence of Self-Healing in Polycrystalline APbI₃ Perovskite Films

Mn²⁺‐Activated Cs₃Cu₂I₅ Nano‐Scintillators for Ultra‐High Resolution Flexible X‐Ray Imaging

Red‐Emitting Organic–Inorganic Hybrid Manganese(II) Halides for X‐Ray Imaging

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Halide perovskites and perovskite related materials for particle radiation detection

Abstract: Radiation detectors are widely used in physics, material science, chemistry, and biology. Halide perovskites are known for their superior properties including tunable bandgaps and chemical compositions, high defect tolerance, solution-processable...

Cited by 24 publications

References 139 publications

A-Site Cation Dependence of Self-Healing in Polycrystalline APbI3 Perovskite Films

A-Site Cation Dependence of Self-Healing in Polycrystalline APbI3 Perovskite Films

Mn2+‐Activated Cs3Cu2I5 Nano‐Scintillators for Ultra‐High Resolution Flexible X‐Ray Imaging

Red‐Emitting Organic–Inorganic Hybrid Manganese(II) Halides for X‐Ray Imaging

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A-Site Cation Dependence of Self-Healing in Polycrystalline APbI₃ Perovskite Films

A-Site Cation Dependence of Self-Healing in Polycrystalline APbI₃ Perovskite Films

Mn²⁺‐Activated Cs₃Cu₂I₅ Nano‐Scintillators for Ultra‐High Resolution Flexible X‐Ray Imaging