Publication date: 21st July 2025
Perovskite and inkjet printing offer a promising combination for the realization of novel X-ray detectors. Perovskite semiconductors combine excellent X-ray absorption properties with high photon-to-charge conversion efficiencies in direct detectors. Moreover, they offer equally promising properties for novel scintillator materials with high photon-to-photon efficiencies for indirect detectors [1]. We have investigated different device architectures for efficient charge collection based on perovskite active layers. Due to the perovskite’s processability at low temperatures, perovskite-based X-ray absorbers can also be realized on polymeric substrates and are therefore particularly attractive for the realization of mechanically flexible and curved detectors [2]. We have elaborated on the design, fabrication, and characterization of suitable device architectures and have demonstrated the use of digital inkjet printing to realize triple cation perovskite X-ray detectors on mechanically flexible substrates. Mechanical flexibility opens a pathway towards folded (“origami-type”) devices that bring 2D printing into 3D devices [3].
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