Direct conversion X-ray sensing nature of bismuth (III) iodide thick films

Karthieka, R.R.; Begum, Raihana; Prakash, T.

doi:10.1016/j.cjph.2021.02.017

Cited by 10 publications

(1 citation statement)

References 31 publications

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“… Material Sensitivity (µC Gy −1 cm −3 ) X-ray tube voltage (kV) Dose rate (mGy s −1 ) Voltage/electric field Ref. CsPbI 3 : PVDF-HFP 4.7 70 2.5 2 V [ 24 ] BiI 3 0.053 70 2.5 2 V [ 25 ] Bi 5 O 7 I 1.926 70 2.5 2 V [ 26 ] TMCM-CdCl 3 128.9 ± 4.64 µC Gy −1 cm −2 40 1.06 µGy −1 s −1 10 V [ 27 ] ω-Bi 2 O 3 3.077 μCGy −1 cm −2 60 56.95 μGy −1 s −1 20 V [ 28 ] CsPbI 3 83.6 μC Gy −1 cm −2 60 1.7 0.17 V μm −1 [ 29 ] Y 2 O 3 (high temp.) 0.143 70 2.5 2 V [ …”

Section: Resultsmentioning

confidence: 99%

Polymer-BiI3 composites for high-performance, room-temperature, direct X-ray detectors

2022

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Low-energy X-rays have a predominant role in medical diagnostic applications, grown tremendously during recent Covid-19 pandemic times. Synthesis of stable, PMMA/polystyrene-BiI 3 composites has been done through a facile, low-cost, dry-tumble mixing technique for direct X-ray detector applications. Comparative analysis of structural, optical, and photocurrent responses upon irradiation with low-energy X-rays (30 and 60 kV) ensue that PS-BiI 3 demonstrates high SNR 3300, sensitivity 189 µC Gy −1 cm −3 and fast response time 30 ms, at dose rate 1.68 mGy s −1 , affirming the composite to be prospective candidate for low-energy, room-temperature, direct X-ray detectors under low bias conditions. Graphical abstract Supplementary Information The online version contains supplementary material available at 10.1557/s43579-022-00185-6.

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