Photonic Structure-Integrated Two-Dimensional Material Optoelectronics

Abstract

Abstract:The rapid development and unique properties of two-dimensional (2D) materials, such as graphene, phosphorene and transition metal dichalcogenides enable them to become intriguing candidates for future optoelectronic applications. To maximize the potential of 2D material-based optoelectronics, various photonic structures are integrated to form photonic structure/2D material hybrid systems so that the device performance can be manipulated in controllable ways. Here, we first introduce the photocurrent-generation mechanisms of 2D material-based optoelectronics and their performance. We then offer an overview and evaluation of the state-of-the-art of hybrid systems, where 2D material optoelectronics are integrated with photonic structures, especially plasmonic nanostructures, photonic waveguides and crystals. By combining with those photonic structures, the performance of 2D material optoelectronics can be further enhanced, and on the other side, a high-performance modulator can be achieved by electrostatically tuning 2D materials. Finally, 2D material-based photodetector can also become an efficient probe to learn the light-matter interactions of photonic structures. Those hybrid systems combine the advantages of 2D materials and photonic structures, providing further capacity for high-performance optoelectronics.

Resonant photonic crystals based on van der Waals heterostructures for effective light pulse retardation

“…Owing to van der Waals forces one can create heterostructures from such materials [11]. Planar photonic crystals can integrate the 2D materials to form hybrid systems of different functionality [12]. We are interested in materials with optical gap, which have exciton resonance with strong oscillator strength, like TMDs [13,14].…”

In situ monitoring of electrical and optoelectronic properties of suspended graphene ribbons during laser-induced morphological changes

“…It is obvious that V pc has a nearly similar gate-dependent pattern to the calculated Seebeck coefficient, suggesting that photocurrent signals in folded structures are mainly attributed to the PTE. 41,42 Recently PTEinduced photocurrent responses have also been observed at single-bilayer graphene junctions and TMDC-metal junctions due to the Seebeck coefficient difference across these junctions. 43,44…”

Integrated Photonic Structure Enhanced Infrared Photodetectors

“…[ 61–65 ] In this way, microcavities are proposed to enhance the absorptance and the photoresponse of infrared detection materials in microcavities. Graphene can respond to a wide spectral range of photons due to the zero bandgap, [ 66 ] and have fast speed due to the high mobility. [ 65 ] So graphene has been studied as a promising infrared detection material.…”