Affiliation:
1. Research Center for Frontier Fundamental Studies Zhejiang Labs Yuhang District Hangzhou Zhejiang 311121 P. R. China
2. State Key Laboratory of Extreme Photonics and Instrumentation College of Optical Science and Engineering Zhejiang University Hangzhou 310027 P. R. China
3. Center for High Technology Materials and the Department of Mechanical Engineering The University of New Mexico Albuquerque NM 87131 USA
4. Department of Physics College of Science United Arab Emirates University Al‐Ain 15551 United Arab Emirates
5. Department of Physics University of Peshawar Peshawar 25000 Pakistan
6. School of Physics State Key Laboratory for Silicon Materials Zhejiang University Hangzhou 310027 P. R. China
Abstract
AbstractOwing to their extraordinary photophysical properties, organometal halide perovskites are emerging as a new material class for X‐ray detection. However, the existence of toxic lead makes their commercialization questionable and should readily be replaced. Accordingly, several lead alternatives have been introduced into the framework of conventional perovskites, resulting in various new perovskite dimensionalities. Among these, Pb‐free lower dimensional perovskites (LPVKs) not only show promising X‐ray detecting properties due to their higher ionic migration energy, wider and tunable energy bandgap, smaller dark currents, and structural versatility but also exhibit extended environmental stability. Herein, first, the structural organization of the PVKs (including LPVKs) is summarized. In the context of X‐ray detectors (XDs), the outstanding properties of the LPVKs and active layer synthesis routes are elaborated afterward. Subsequently, their applications in direct XDs are extensively discussed and the device performance, in terms of the synthesis method, device architecture, active layer size, figure of merits, and device stability are tabulated. Finally, the review is concluded with an in‐depth outlook, thoroughly exploring the present challenges to LPVKs XDs, proposing innovative solutions, and future directions. This review provides valuable insights into optimizing non‐toxic Pb‐free perovskite XDs, paving the way for future advancements in the field.
Funder
National Natural Science Foundation of China
Subject
Biomaterials,Biotechnology,General Materials Science,General Chemistry
Reference144 articles.
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2. Materials science and X-ray techniques