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Toward next-generation X-ray imaging: Pb-free PErovskite Charge Transport engineering

Project description

Innovative semiconductors for X-ray imaging with reduced health impact

The use of X-ray imaging in medical, security and scientific fields is on the rise. However, this also increases exposure to ionising X-rays, which can directly impact health. With this in mind, the ERC-funded X-PECT project aims to develop materials that facilitate more sensitive X-ray detectors, thereby reducing operational radiation doses. Metal halide perovskite (MHP) semiconductors show promise for sensitive X-ray detection due to their high-energy solid X-ray absorption and efficient charge carrier generation and transport. X-PECT intends to create highly sensitive and sustainable lead-free MHPs to mitigate X-ray-related health risks. The project will process selected candidate materials into a stable, scalable pixelated X-ray demonstrator device, expected to offer a 20- to 50-fold improvement in sensitivity and resolution.

Objective

X-rays are widely applied in medical diagnostics, security screening and scientific research. The growing demand for X-ray imaging has increased the frequency with which humans are exposed to ionizing X-rays, directly increasing radiation-related health risks. To minimize these health risks, X-PECT aims to rationally design materials that enable more sensitive X-ray detectors, thus allowing the use of lower operational radiation doses. Metal halide perovskite (MHP) semiconductors have emerged as a highly promising material class for sensitive X-ray detection. Besides their easy processing, the popularity of MHPs arises from their outstanding optoelectronic properties, such as strong high-energy X-ray absorption, and efficient charge carrier generation and transport, outperforming current market standards. However, the intrinsic instability and toxicity of popular lead-based MHPs hinders their large-scale application in sustainable X-ray technology. X-PECT aims for a fundamental understanding of the intrinsic strengths and limitations of MHPs as photoactive material for X-ray detection. In this context, X-PECT will address urging scientific hurdles related to toxicity, structural and chemical stability, intrinsic charge carrier transport efficiency, and processing efforts. The ultimate goal of X-PECT is to rationally develop highly sensitive, sustainable lead-free MHPs through micromanaging their electronic structure by composition and dimensionality engineering. Tailoring their functionality will be guided by applying a full arsenal of both established characterization techniques and unique (micro)spectroscopy platforms for the full assessment of the structural and photophysical properties to identify and suppress the factor(s) currently limiting the X-ray sensitivity and stability. Ultimately, selected candidate materials will be processed into a stable, scalable pixelated X-ray demonstrator device with a 20- to 50-fold improved sensitivity and resolution.

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Programme(s)

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Topic(s)

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Funding Scheme

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HORIZON-ERC - HORIZON ERC Grants

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Call for proposal

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(opens in new window) ERC-2023-STG

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Host institution

KATHOLIEKE UNIVERSITEIT LEUVEN
Net EU contribution

Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.

€ 2 035 525,00
Address
OUDE MARKT 13
3000 LEUVEN
Belgium

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Region
Vlaams Gewest Prov. Vlaams-Brabant Arr. Leuven
Activity type
Higher or Secondary Education Establishments
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Total cost

The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.

€ 2 035 525,00

Beneficiaries (1)

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