  In this letter, we highlight the enhanced functionalization of the electronic
and optical properties in the hybrid heterojunction of 1D Tellurene with 2D
monolayer of Graphene and MoS2 in both lateral and vertical geometries, having
potential applications in the field of photonics and energy harvesting. The
structural geometries of the lateral and vertical assemblies are optimized with
a comparative and systematic analysis of the energetics of the different
positional placement of the 1D system with respect to the hexagonal 2D layer.
The 1D/2D coupling of the electronic structure in this unique assembly enables
the realization of the four different types of heterojunctions, viz. type I,
type II, Z-scheme and Schottky type, with the band-alignments being entirely
dependent upon the stacking geometry of 1D Tellurene with respect to the 2D
monolayer. With the static and time-dependent first-principles calculations, we
indicate the potential applications of these hybrid systems in broadband photo
detection and absorption, covering the full range of Infra-red to visible
(IR-Vis) spectrum and in green energy harvesting with an effective separation
and migration of photo-generated charge carriers.
