Halide perovskites have gained tremendous attention in the past decade owing to their excellent properties in optoelectronics. Recently, a fascinating property, ferroelectricity, has been discovered in halide perovskites and quickly attracted widespread interest. Compared with traditional perovskite oxide ferroelectrics, halide perovskites display natural advantages such as structural softness, low weight, and easy processing, which are highly desirable in applications pursuing miniaturization and flexibility. This review focuses on the current research progress in halide perovskite ferroelectrics, encompassing the emerging materials systems and their potential applications in ferroelectric photovoltaics, self-powered photodetection, and X-ray detection. We also attempt to point out the main challenges and possible solutions in the future development of halide perovskite ferroelectric materials. This article is protected by copyright. All rights reserved.
Keywords: ferroelectricity; halide perovskite; photodetection; photovoltaics; structural dimensionality.
This article is protected by copyright. All rights reserved.