Air‐Stable and Flexible Photodiode for X‐Rays Detection Based on a Hybrid Perovskite Active Layer and Organic Interlayers

• DOI: 10.1002/admi.202300968
• Publication Date: 2024-12-02T10:14:12Z
• Authors: Marco Natali; Andrea Ciavatti; Matteo Verdi; Margherita Taddei; Franco Corticelli; Mario Prosa; Mirko Seri; Giampiero Ruani; Michele Muccini; Stefano Toffanin; Margherita Bolognesi; Beatrice Fraboni
• Keywords: Photodiode; Active layer

Abstract Solution‐processed organic and hybrid semiconductor materials have great potential for ionizing radiation direct detection, as they combine high sensitivity, low‐power consumption, flexibility. There is, however, an open challenge related to the stability in ambient/operational conditions of this class devices. In work, air‐stable, solution‐processed flexible X‐ray detector is reported, based on integration perovskite thin films used active layer functional interlayers, respectively. The diode architecture engineering interface between hole transporting material (solvent‐modified poly(3,4‐ethylenedioxythiophene):polystyrene sulfonate) key achieve enhanced detector's air performance. unencapsulated device, measured passive operation (0 V), shows a limit‐of‐detection 0.37 ± 0.04 µGy s −1 sensitivity 5.2 µC Gy cm −2 , which retained within 25% after 42 days exposure ambient conditions.