2013年11月12日 · 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.

2010年3月15日 · 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.

2014年5月16日 · 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.

2014年11月18日 · 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...

2024年12月27日 · A stronger photoluminescence (PL) phenomenon was observed for the p-doped monolayer MoS2. The results show that the PL of MoS2-2D films can be enhanced in a simple and convenient way compatible with device fabrication processes by p-type doping and annealing in an oxygen atmosphere.

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]. ...

2018年7月1日 · 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.

2014年7月4日 · 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...

luminescence (PL) emission enhancement. The enhancement effect of plasmonic hybrids on the PL emission of MoS 2 has been systematically studied on MoS 2 /Ag spherical nanoparticle (SP) hybrid systems with different architectures by changing the stacking position of Ag SPs. It is demonstrated that the sandwich-like hybrid composed of monolayer MoS

2019年4月25日 · 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.