Nov 12, 2013 · We demonstrate the tunability of the photoluminescence (PL) properties of monolayer (1L)-MoS 2 via chemical doping. The PL intensity of 1L-MoS 2 was drastically enhanced by the adsorption of p-type dopants with high electron affinity but reduced by the adsorption of n-type dopants.

Mar 15, 2010 · Bulk MoS 2, a prototypical metal dichalcogenide, is an indirect bandgap semiconductor with negligible photoluminescence. When the MoS 2 crystal is thinned to monolayer, however, a strong photoluminescence emerges, indicating an indirect to direct bandgap transition in this d-electron system.

May 16, 2014 · We report on a strong photoluminescence (PL) enhancement of monolayer MoS 2 through defect engineering and oxygen bonding. Micro-PL and Raman images clearly reveal that the PL enhancement occurs at cracks/defects formed during high-temperature annealing.

Nov 18, 2014 · In this work we examine the PL characteristics of CVD-grown MoS 2 monolayers with a focus on the role of growth-induced non-uniform strain and GBs. We examine the PL intensity and peak...

Sep 1, 2020 · We have investigated the static and dynamic photoluminescence (PL) of monolayer molybdenum disulfide (MoS 2) from low-temperature (4 K) to room temperature (300 K). Free excitons (A excitons) and bound excitons (X L excitons) can be …

Jul 4, 2014 · We present strong evidence of PL quenching of MoS 2 as a result of charge transfer from MoS 2 to Au: p-doping of MoS 2. The results suggest new avenues for 2D nanoelectronics, active...

Jul 1, 2018 · Low-temperature photoluminescence (PL) properties of monolayer MoS 2 on diverse substrates are primarily studied. As the temperature increases, a decrease in PL intensity and a red shift in PL wavelength are observed.

We demonstrate the tunability of the photoluminescence (PL) properties of monolayer (1L)-MoS2 via chemical doping. The PL intensity of 1L-MoS2 was drastically enhanced by the adsorption of p-type dopants with high electron affinity, but reduced by the adsorption of n-type dopants.

Apr 25, 2019 · The ability to tailor and enhance photoluminescence (PL) behavior in two-dimensional (2D) transition metal dichalcogenides (TMDCs) such as molybdenum disulfide (MoS2) is significant for pursuing optoelectronic applications.

The PL spectra of the MoS 2 shows a typical PL curve for CVD-grown monolayer MoS 2 with one broad peak at 684 nm, corresponding to direct-gap optical transitions of MoS 2 (1.81 eV) [44]. ...