Akademik Veri Yönetim Sistemi
Laser and Photonics Reviews, 2026 (SCI-Expanded, Scopus)
Organic-inorganic halide perovskite materials have demonstrated exceptional potential for X-ray detection due to their high X-ray attenuation coefficient and large mobility-lifetime product. However, severe ion migration leads to signal current baseline drift and increased noise, limiting the imaging performance. In this work, we report a new mechanism by introducing a lattice-matched MABr–PMMA composite polymer film, fabricated through a solution-processed epitaxial growth method. The formation of a PN heterojunction, enabled by electron donation from the MABr component, not only provides efficient surface passivation but also effectively suppresses ion migration in MAPbBr3 perovskite single crystals (SCs). Consequently, the X-ray detector exhibits an ultralow baseline drift of 2.4 × 10−6 nA cm−1 s−1 V−1 under a high electric field of 1000 V cm−1, comparable to that of 2D perovskite SCs. It also achieves a high sensitivity of 1.46 × 105µC Gyair−1cm−2 and a low detection limit of 51.2 nGyair s−1. Moreover, the device also demonstrates excellent stability and reliability under various demanding operational conditions, including high-dose irradiation, high-temperature, long-term high biasing, and long-term air exposure storage. In addition, the detector delivers high-resolution and real-time X-ray imaging, highlighting its potential for high-resolution integrated X-ray imaging array applications.