Flexible X‐ray detector based on sliced lead iodide crystal

A promising flexible X‐ray detector based on inorganic semiconductor PbI 2 crystal is reported. The sliced crystals mechanically cleaved from an as‐grown PbI 2 crystal act as the absorber directly converting the impinging X‐ray photons to electron hole pairs. Due to the ductile feature of the PbI 2 crystal, the detector can be operated under a highly curved state with the strain on the top surface up to 1.03% and still maintaining effective detection performance. The stable photocurrent and fast response were obtained with the detector repeated bending to a strain of 1.03% for 100 cycles. This work presents an approach for developing efficient and cost‐effective PbI 2 ‐based flexible X‐ray detector.Photocurrent responses of the flexible PbI 2 X‐ray detector with the strain on the top surface up to 1.03% proposed in this work with the cross sectional structure and curved detector photograph as insets. (© 2016 WILEY‐VCH Verlag GmbH &Co. KGaA, Weinheim)