Zhang Yiqi, Ma Yao, Wang Yaxi, Zhang Xindong, Zuo Chuantian, Shen Liang, Ding Liming
State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, 130012, China.
Center for Excellence in Nanoscience (CAS), Key Laboratory of Nanosystem and Hierarchical Fabrication (CAS), National Center for Nanoscience and Technology, Beijing, 100190, China.
Adv Mater. 2021 Jul;33(26):e2006691. doi: 10.1002/adma.202006691. Epub 2021 May 24.
State-of-the-art photodetectors which apply hybrid perovskite materials have emerged as powerful candidates for next-generation light sensing. Among them, lead-based ones are the most popular beyond doubt on account of their unique and superior optoelectronic properties. Nevertheless, trade-off toward commercialization exists between nontoxicity and high performance, with the poor stability of lead-based perovskites, indicating that it is indispensable to substitute lead with nontoxic element meanwhile bringing about a comparable figure of merit of photodetectors and relatively long-term stability. Herein, recent advances in lead-free perovskite photodetectors are reviewed, analyzing the principle while designing new materials and highlighting some remarkable progress, which are comparable, even superior, to lead-based photodetectors. Furthermore, their potential strategy in optical communication, image sensing, narrowband photodetection, etc., is examined and a perspective on developing new materials and photodetectors with superior properties for more practical applications is provided.
应用混合钙钛矿材料的先进光电探测器已成为下一代光传感的有力候选者。其中，铅基光电探测器因其独特且优异的光电特性，无疑是最受欢迎的。然而，在无毒与高性能之间存在着商业化的权衡，铅基钙钛矿的稳定性较差，这表明用无毒元素替代铅，同时实现可比的光电探测器品质因数和相对长期的稳定性是必不可少的。在此，本文综述了无铅钙钛矿光电探测器的最新进展，分析了新材料设计的原理，并突出了一些显著进展，这些进展与铅基光电探测器相当，甚至更优。此外，还研究了它们在光通信、图像传感、窄带光探测等方面的潜在策略，并对开发具有更优异性能以用于更实际应用的新材料和光电探测器提供了展望。
