Thermal Stability of 2D/3D Halide Perovskites

Christians, Jeffrey A.; Surel, Josephine L.; Cutlip, Elizabeth V.

doi:10.1109/pvsc48317.2022.9938922

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“…To fix the stability issue, in the last few years, researchers have put effort into 2D lead halide perovskite for its much better stability (under moisture) which fairly retains similar optoelectronic features as compared to its 3D counterpart. These 2D halide perovskites are essentially layered structures depending on the spacer cation that inhibits ion migration, this also helps to prevent them from degradation [18,19].…”

Section: Introductionmentioning

confidence: 99%

Direct & efficient detection of x-ray radiation using thermally evaporated 2D hybrid lead halide perovskite (BA₂PbBr₄)(BA=n-Butylammonium=C₄H₉NH₃) film

Mitra,

Majhi,

Maity

et al. 2024

Phys. Scr.

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This report demonstrates fast response and direct detection of x-ray radiation by thermally evaporated 2D hybrid halide perovskite (BA2PbBr4)(n-BA=Butylammonium=C4H9NH3) based film. A highly efficient pin-hole free/compact film (thickness∼1 μm), via a controlled evaporation process, has been grown to fabricate solid-state x-ray radiation detector film (typical dimension ∼1 × 1 cm2) of 2D hybrid halide perovskite BA2PbBr4 ( BAPB) material. Direct detection of x-rays is possible using this detector by simple electrical readout method, where a change in resistance occurs while exposed to x-ray radiation at ambient temperature. The detector current increases when an x-ray impinges on it and exhibits the highest sensitivity ∼1000 μC/Gy/cm2. The detector film shows fast response, exhibiting quick response-recovery time ∼ ms towards x-ray. The detector film exhibits reasonably high dark resistivity ∼ 10 10 Ω − cm and good mobility-lifetime ( μ τ ) product 3.308 × 10 − 6 c m 2 / s . The 2D hybrid halide perovskite (BA2PbBr4) based detector can sustain an effective high electric field ∼5000 V cm−1 corresponding to 40 V operational bias. It shows very good radiation resistant towards x-ray and retains its crystal structure, as confirmed from structural data under sustained x-ray exposure. The 2D halide perovskite detector (BAPB) shows long-term stability or shelf life (∼4 months) and response is highly repeatable with less than 5 % fluctuation, which is an important key performance metric for any radiation detector. This detector has good application potential in several areas like, medical imaging, security checking, etc.

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Section: Introductionmentioning

confidence: 99%

Direct & efficient detection of x-ray radiation using thermally evaporated 2D hybrid lead halide perovskite (BA₂PbBr₄)(BA=n-Butylammonium=C₄H₉NH₃) film

Mitra,

Majhi,

Maity

et al. 2024

Phys. Scr.

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Thermal Stability of 2D/3D Halide Perovskites

Cited by 1 publication

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Direct & efficient detection of x-ray radiation using thermally evaporated 2D hybrid lead halide perovskite (BA₂PbBr₄)(BA=n-Butylammonium=C₄H₉NH₃) film

Direct & efficient detection of x-ray radiation using thermally evaporated 2D hybrid lead halide perovskite (BA₂PbBr₄)(BA=n-Butylammonium=C₄H₉NH₃) film

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Thermal Stability of 2D/3D Halide Perovskites

Cited by 1 publication

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Direct & efficient detection of x-ray radiation using thermally evaporated 2D hybrid lead halide perovskite (BA2PbBr4)(BA=n-Butylammonium=C4H9NH3) film

Direct & efficient detection of x-ray radiation using thermally evaporated 2D hybrid lead halide perovskite (BA2PbBr4)(BA=n-Butylammonium=C4H9NH3) film

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Direct & efficient detection of x-ray radiation using thermally evaporated 2D hybrid lead halide perovskite (BA₂PbBr₄)(BA=n-Butylammonium=C₄H₉NH₃) film

Direct & efficient detection of x-ray radiation using thermally evaporated 2D hybrid lead halide perovskite (BA₂PbBr₄)(BA=n-Butylammonium=C₄H₉NH₃) film