Recent progress in waveguide-integrated photodetectors based on 2D materials for infrared detection

Abstract Two-dimensional (2D) materials have received extensive attention in optoelectronics because of their unique characteristics. However, due to the extremely thin thickness 2D materials, optical absorption is limited. In recent years, researchers used different effects and structures enhance materials. The waveguide, as a device guide limit light propagation, has been integrated into photodetectors based on most which applied infrared spectrum. This article reviews development waveguide-integrated mainly spectrum years. Discussions focus preparation photodetectors, design simulation waveguide structures, summary research results applications Finally, challenges prospects are put forward discussed.