On-chip Two-dimensional Materials-based Waveguide-integrated Photodetectors

TL;DR: This review summarizes the development of mid-infrared optoelectronic waveguide devices using 2D materials, focusing on passive photonic devices, modulators, photodetectors, and light sources, and discusses challenges and prospects in this area for infrared physics and optoelectronics applications.

TL;DR: Researchers developed Ge-doped BiTe nanofilms via pulsed-laser deposition, achieving room-temperature long-wave infrared photodetection with high responsivity (1.41 mA W−1), external quantum efficiency (0.017%), and detectivity (1.96 × 10^6 Jones).

TL;DR: Recent advances in 2D materials, such as MXenes and transition metal dichalcogenides, have revolutionized optoelectronics with exceptional properties, enabling ultrafast photodetectors, efficient solar cells, and adaptive light-tracking devices, but practical implementation faces challenges in scalability and reliability.

TL;DR: Graphene has high mobility and optical transparency, in addition to flexibility, robustness and environmental stability as discussed by the authors, and its true potential lies in photonics and optoelectronics, where the combination of its unique optical and electronic properties can be fully exploited, even in the absence of a bandgap, and the linear dispersion of the Dirac electrons enables ultrawideband tunability.

TL;DR: An overview and evaluation of state-of-the-art photodetectors based on graphene, other two-dimensional materials, and hybrid systems based on the combination of differentTwo-dimensional crystals or of two- dimensional crystals and other (nano)materials, such as plasmonic nanoparticles, semiconductors, quantum dots, or their integration with (silicon) waveguides are provided.

TL;DR: Black phosphorus (BP), the most stable allotrope of phosphorus with strong intrinsic in-plane anisotropy, is reintroduced to the layered-material family and shows great potential for thin-film electronics, infrared optoelectronics and novel devices in which anisotropic properties are desirable.

TL;DR: In this article, the authors describe the photonic bandgap as a periodicity in dielectric constant, which can create a range of 'forbidden' frequencies called a photonic Bandgap.