Recent progress in 2D material van der Waals heterostructure-based luminescence devices towards the infrared wavelength range

Van der Waals heterostructures are composed of two-dimensional materials and represent a new kind of exciton material with attractive luminescence properties. They have inspired many applications including valley-polarized, single-photon emitting, and optically pumped lasers. These kinds of heterostructure light sources with versatile functionality are of great significance for realizing high integration and low power on-chip light sources, especially in wavelength expansion. Although more and more efforts with different aspects are being placed on the investigation of infrared luminescence, a systematic and complete picture in this area is lacking. In this paper, the recent progress on infrared luminescence in two-dimensional van der Waals heterostructures is reviewed, including some luminescence mechanisms and properties and applications, as well as the challenges and perspectives for future studies.

Automated summary

Van der Waals heterostructures, composed of two-dimensional materials, have attractive luminescence properties and great significance in achieving high integration and low power on-chip light sources. The recent progress, challenges, and perspectives on infrared luminescence in two-dimensional van der Waals heterostructures are reviewed.