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​Ultrasensitive X-ray detection enabled by graphene/perovskite heterostructures 

Researchers from Dongguan University of Technology have developed a high-performance X-ray detector based on a graphene/perovskite heterostructure, addressing the limitations of traditional perovskite detectors that suffer from charge recombination in thick and defect-rich films. 

By exploiting graphene’s exceptional carrier mobility (> 10⁴ cm²·V⁻¹·s⁻¹), the device achieves efficient charge transport and reduced non-radiative recombination at the interface with CsPbBr₃. Incorporating a MAPbCl₃ buffer layer minimizes lattice mismatch at the perovskite/Si interface, enhancing mechanical adhesion by an order of magnitude. 

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Researchers from Dongguan University of Technology have developed a high-performance X-ray detector based on a graphene/perovskite heterostructure, addressing the limitations of traditional perovskite detectors that suffer from charge recombination in thick and defect-rich films. By exploiting graphene’s exceptional carrier mobility (> 10⁴ cm²·V⁻¹·s⁻¹), the device achieves efficient charge transport and reduced non-radiative recombination at the interface with CsPbBr₃. Incorporating a MAPbCl₃ buffer layer minimizes lattice mismatch at the perovskite/Si interface, enhancing mechanical adhesion by an order of magnitude.  

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