Controlling neutral and charged excitons in MoS₂ with defects

Abstract

Abstract

Strain-induced structural, elastic, and electronic properties of 1L-MoS2

“…There are several experimental approaches for tuning the band gap of MoS 2 , such as layer reduction [7,15], heterostructure synthesis [16,17], alloy engineering [18,19], and strain engineering [20], as well as doping by chemical route [16,17] and ion beams [8,[21][22][23][24][25][26]. Among the countless practical experimental approaches, strain engineering is a better way to carefully tune the band gap of 1L-MoS 2 within the direct nature of band gap.…”

Recent progresses on ion beam irradiation induced structure and performance modulation of two-dimensional materials

“…The structural modulation under ion irradiation can further enrich the functionalities of devices. Burns et al 200 uncovered the tailored optical properties of 2D MoS 2 under heavy ion irradiation using photoluminescence spectroscopy. Under 3 MeV Au 2+ ion irradiation with doses ranging from 1 × 10 12 cm −2 to 1 × 10 16 cm −2 , the optical excitation could be controlled by binding A and B excitons through generated defects.…”

Closed‐Loop Defect States in 2D Materials with Honeycomb Lattice Structure: Molybdenum Disulfide

“…More recently, also vacancy clusters and holes in the interior of TMDCs have been established as sites, which are catalytically very active [ 32–34 ] and may be used to tune the optoelectronic [ 35 ] and thermoelectric properties. [ 36 ] Those defects, however, also act as localized scattering centers and potentially deteriorate, e.g., the electronic transport properties.…”

“…[26][27][28][29] As the rim is the growth front of the ribbon or platelet, the different terminations and also composition variations are accessible in a controlled manner by the growth conditions. [30,31] More recently, also vacancy clusters and holes in the interior of TMDCs have been established as sites, which are catalytically very active [32][33][34] and may be used to tune the optoelectronic [35] and thermoelectric properties. [36] Those defects, however, also act as localized scattering centers and potentially deteriorate, e.g., the electronic transport properties.…”