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Advances in flexible weak-light detectors based on perovskites:preparation,optimization,and application
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Advances in flexible weak-light detectors based on perovskites:preparation,optimization,and application
Photodetectors with weak-light detection capabilities play an indispensable role in various crucial fields such as health monitors,imaging,optical communication,and etc.Nevertheless,the detection of weak light signals is often severely interfered by multiple factors such as background light,dark noise and circuit noise,making it difficult to accurately capture sig-nals.While traditional technologies like silicon photomultiplier tubes excel in sensitivity,their high cost and inherent fragility restrict their widespread application.Against this background,perovskite materials have rapidly emerged as a research focus in the field of photodetection due to their simple preparation processes and exceptional optoelectronic properties.Not only are the preparation processes of perovskite materials straightforward and cost-effective,but more importantly,they can be flexi-bly integrated into flexible and stretchable substrates.This characteristic significantly compensates for the shortcomings of tradi-tional rigid electronic devices in specific application scenarios,opening up entirely new possibilities for photodetection technol-ogy.Herein,recent advances in perovskite light detection technology are reviewed.Firstly,the chemical and physical proper-ties of perovskite materials are discussed,highlighting their remarkable advantages in weak-light detection.Subsequently,the review systematically organizes various preparation techniques of perovskite materials and analyses their advantages in differ-ent application scenarios.Meanwhile,from the two core dimensions of performance improvement and light absorption enhance-ment,the key strategies of improving the performance of perovskite weak-light photodetectors are explored.Finally,the review concludes with a brief summary and a discussion on the potential challenges that may arise in the further develop-ment of perovskite devices.
perovskiteweak-lightphotodetectorflexible
Yaqian Yang、Ying Li、Di Chen、Guozhen Shen
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School of Integrated Circuits and Electronics,Beijing Institute of Technology,Beijing 100081,China
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