Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 21, 2025

Abstract Large‐area perovskite (PVK) X‐ray detectors exhibit significant potential for commercial applications. However, the production of uniform and dense thick films as well achieving efficient carrier transport over tens microns in PVK films, remain major challenges highly sensitive detection. Herein, an innovative vacuum‐assisted blade coating strategy is proposed using inks that strictly controls nucleation growth PVKs to prepare large‐area, high‐quality MAPbI 3 homojunction films. Arising from formation a type II between top bottom layers, effective reduction density defect states, resultant film exhibits impressive performances, including increase lifetime 1272 9335 ps, surface photovoltage change 93 386 mV, nearly three times higher mobility‐lifetime product compared with pristine NMP‐PVK film. Consequently, detector based on demonstrates high sensitivity 1.3 × 10 5 µC Gy air −1 cm −2 , surpassing most previously reported values method. This research provides convenient approach preparing large‐area establishes solid foundation development

Language: Английский