A review on BiI3 perovskites and composites for direct X-ray detection

Chaudhari, Ritu; Kant, Chhaya Ravi

doi:10.1016/j.sna.2022.113863

Cited by 8 publications

(3 citation statements)

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“…The noise equivalent dose rate (NED) determines the noise or fluctuations in the dark current that disrupt the quality and performance of the device. 38 Figure 5d shows the relationship of operating voltage to sensitivity and NED under 0.2 and 1.432 mGy air s −1 , which are given by eqs 1 and 2, respectively. 39…”

Section: Resultsmentioning

confidence: 99%

“…This low-power device performance is significantly better than those of most known organic direct X-ray detectors and conventional medical diagnostic requirements (Table S2). The noise equivalent dose rate (NED) determines the noise or fluctuations in the dark current that disrupt the quality and performance of the device Figure d shows the relationship of operating voltage to sensitivity and NED under 0.2 and 1.432 mGy air s –1 , which are given by eqs and , respectively …”

Section: Resultsmentioning

confidence: 99%

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Toward Low-Voltage and High-Sensitivity Direct X-ray Detectors Based on Thick Bulk Heterojunction Organic Device

Li,

Chen,

Hao

et al. 2024

ACS Appl. Mater. Interfaces

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Organic semiconducting materials are promising for the fabrication of flexible ionizing radiation detectors for imaging because of their tissue equivalence, simple large-scale processing, and mass production. However, it is challenging to achieve highsensitivity detection for organic direct detectors prepared by low-cost solution processing because of the compromise between thickness and carrier transport. In this study, high-performance organic direct X-ray detectors were fabricated by building a micrometer-thick bulk heterojunction (BHJ) using poly(3-hexylthiophene-2,5-diyl) (P3HT):(6,6)-phenyl c71 butyric acid methyl ester. A 5 μm BHJ film was fabricated by drop-casting and enhanced crystallization of P3HT using binary solvents and high-boilingpoint additives to improve the charge carrier mobility. Furthermore, this organic direct X-ray detector has a sensitivity of >654.26 μC Gy air s −1 and a self-powered response. Because of the architecture of the thick active layer and the energy cascade in this diode detector, it has a very low dark current of 46.26 pA at −2 V. A fast and efficient approach was developed for fabricating thick, highly mobile organic BHJ films for high-performance direct X-ray detectors. It has great potential for application in a new generation of flexible and portable large-area flat-panel detectors.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Toward Low-Voltage and High-Sensitivity Direct X-ray Detectors Based on Thick Bulk Heterojunction Organic Device

Li,

Chen,

Hao

et al. 2024

ACS Appl. Mater. Interfaces

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show abstract

“…[8][9][10][11] Halide perovskites, which have a similar structure to traditional inorganic ABO 3 -type perovskites, have been shown to be promising candidates for use in photovoltaics, photodetection, X-ray detection, and other applications due to their excellent photoelectric properties and carrier transportation. [12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31] Compared to traditional materials such as a-Se and CZT, halide perovskites have high defect tolerance, thanks to their unique octahedral structure, which allows for adjustment of their composition and structure as needed. Currently, hundreds of novel perovskite materials with different compositions and structural dimensions are reported, providing a rich platform for material property adjustment.…”

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confidence: 99%