Haoyun Wang, Zexin Li, Dongyan Li, Ping Chen, Lejing Pi, Xing Zhou*, Tianyou Zhai*, Van der Waals Integration Based on 2D Materials for High-Performance Infrared Photodetectors, Advanced Functional Materials 2021, accepted.
https://doi.org/10.1002/adfm.202103106.
Abstract: Infrared photodetectors have been widely applied in various fields, including thermal imaging, biomedical imaging, communication, etc. Van der Waals (vdW) integration based on two-dimensional (2D) materials provides a new solution for high-performance infrared photodetectors due to the versatile device configurations and excellent photoelectric properties. In recent years, great progress has been made in infrared photodetectors based on van der Waals integration. In this review, recent progress in van der Waals integration based infrared photodetectors is presented. First, the working mechanisms and advantages of photodetectors with different structures and band alignments are presented. Then, the recent progress of vdW integration based infrared photodetectors is reviewed, focusing on 2D/nD (n=0, 1, 2, 3) van der Waals integration, and the band engineering as well as the performance of the photodetectors are discussed in detail. Finally, a summary is delivered, and the challenges and future directions of van der Waals integration based infrared photodetectors are provided.
