Publication date: 22nd July 2026
Exposure to high doses of X-rays in medical imaging poses significant health risks due to their high photon energy and deep skin penetration, necessitating the development of highly sensitive detectors capable of operating at lower radiation doses. Perovskite materials have emerged as promising candidates for X-ray detection, with research evolving from organic systems (e.g., CH₃NH₃PbBr₃) to inorganic counterparts (CsPbBr₃) owing to their superior photo-, thermal-, and moisture stability1. However, challenges such as material instability and high dark current continue to limit their practical application2.
Low-dimensional perovskites, particularly quasi-2D structures composed of inorganic slabs separated by organic cations, offer enhanced structural stability. Nevertheless, they often suffer from limited charge transport and reduced sensitivity. To address these limitations, semiconductor heterostructure engineering has emerged as an effective strategy, combining the advantages of different components to improve charge separation and transport while suppressing undesirable effects such as dark current3.
In this work, we report the synthesis of PEA2Cs2Pb3Br10/CsPbBr3 perovskite heterostructure microcrystals (~20–40 μm) and their structural and optical characterization4. Their charge carrier behaviour at the interface is investigated upon chemically connecting the two phases. Further their potential for X-ray detectors is demonstrated through proof-of-concept X-ray detector devices.
Compared to their individual constituents, the heterostructures achieve a high sensitivity of 13488.57 μC/Gycm2 and a low limit of detection of 18 μGy/s. This improvement is attributed to more efficient charge-carrier seperation at the heterointerface and suppressed ion migration.
These results highlight quasi-2D/3D perovskite heterostructures as promising candidates for next-generation, high-performance X-ray detectors
nanoGe is a prestigious brand of successful science conferences that are developed along the year in different areas of the world since 2009. Our worldwide conferences cover cutting-edge materials topics like perovskite solar cells, photovoltaics, optoelectronics, solar fuel conversion, surface science, catalysis and two-dimensional materials, among many others.
Previously nanoGe Spring Meeting (NSM) and nanoGe Fall Meeting (NFM), MATSUS is a multiple symposia conference focused on a broad set of topics of advanced materials preparation, their fundamental properties, and their applications, in fields such as renewable energy, photovoltaics, lighting, semiconductor quantum dots, 2-D materials synthesis, charge carriers dynamics, microscopy and spectroscopy semiconductors fundamentals, etc.
International Conference on Hybrid and Organic Photovoltaics
International Conference on Hybrid and Organic Photovoltaics (HOPV) is celebrated yearly in May. The main topics are the development, function and modeling of materials and devices for hybrid and organic solar cells. The field is now dominated by perovskite solar cells but also other hybrid technologies, as organic solar cells, quantum dot solar cells, and dye-sensitized solar cells and their integration into devices for photoelectrochemical solar fuel production.
Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics
The main topics of the Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics (IPEROP) are discussed every year in Asia-Pacific for gathering the recent advances in the fields of material preparation, modeling and fabrication of perovskite and hybrid and organic materials. Photovoltaic devices are analyzed from fundamental physics and materials properties to a broad set of applications. The conference also covers the developments of perovskite optoelectronics, including light-emitting diodes, lasers, optical devices, nanophotonics, nonlinear optical properties, colloidal nanostructures, photophysics and light-matter coupling.
The International Conference on Perovskite Thin Film Photovoltaics Perovskite Photonics and Optoelectronics (NIPHO) is the best place to hear the latest developments in perovskite solar cells as well as on recent advances in the fields of perovskite light-emitting diodes, lasers, optical devices, nanophotonics, nonlinear optical properties, colloidal nanostructures, photophysics and light-matter coupling.