Novel Embedded Wire Electrode Approach for High Spatial Resolution X-ray and Gamma-Ray Imaging Detectors Using Methylammonium Lead Tribromide (MAPbBr3)Perovskite Single Crystals

This study addresses challenges posed by the high cost of traditional high-Z materials, difficulties with conventional electrode deposition methods, and limited availability of large single crystals for X-ray and Gamma-ray imaging spectrometer applications. The research introduces a groundbreaking method for fabricating high-resolution detectors using metal-organic Perovskite single crystals. In this study, we are focusing on MAPbBr 3. We have attempted to embed gold-coated wire electrodes during crystal growth, to improve detector’s charge collection properties and spectral performance and simplify the manufacturing process. Strategic enhancements such as including a 3D mesh wire, continuous saturated solvent flow to optimize the crystal growth process are highly challenging. Despite a multitude of challenges, ongoing optimization efforts have shown promising results, enhancing detector performance. Further refinement is crucial to fully exploit these enhancements and address manufacturing challenges. Collaborative efforts between DTU Space, DTU Chemistry, and Nagoya Institute of Technology, NiTech, Japan, are expected to drive significant advancements in detector technology. Future work will optimize larger crystal growth with different perovskites and enhance spectral performance using advanced simulation models, highlighting the immense promise of this pioneering technique for compact, efficient, and high-resolution detectors in medical imaging and high-energy astronomy applications.