This product contains MoS2 flakes solution in ethanol or the solution type you choose. The MoS2 solution has been developed by ultrasonic treatment of bulk MoS2 high quality crystals synthesized through vapor transport (CVT) technique. Since the starting material (CVT grown MoS2 crystals) is highly crystalline, ultrasonic treatment to delaminate MoS2 layers yields highly crystalline MoS2 mono-, few-, and some thick layers suspended in ethanol solution. The solution predominantly contains monolayer flakes, however other thickness might be observed as well. The crystallinity of MoS2 nanomaterials has been confirmed through electron energy dispersive spectroscopy (EDAX), Raman spectroscopy (FWHM<5 cm -1), and scanning electron microscopy (SEM) measurements. Depending on the thickness of the layers, flakes deposited on different substrates produce light emission (photoluminescence). Lateral sizes of MoS2 flakes deposited onto different substrates range from ~10nm - ~10 mm while thickness range from 1L to 10s of layers. N ote on volume, concentration, and solvent type: To reduce shipping costs, we ship supersaturated 2D solutions (~80-120 mg/L depending on the type of 2D layers). However, supersaturated solutions can be diluted to produce ~250-500mL of solution to deposit 2D layers onto desired substrates through simple and cost-effective spin-casting process. In our product, ethanol is used (and recommended) as the dispersant solvent owing to its environmental stability, thermal stability, dispersant properties, and non-contaminating nature. However, if your research needs other solvents, please feel free to contact us. Sample Properties. Sample amount Designer concentration [Standard:1mg/mL] 8mL or larger quantities Solution type Ethanol (highly recommended) [see notes above] Thickness/size range 1 to 10s of layers in thickness / 10nm-10mm in lateral size Fundamental properties 2.02 eV Direct Bandgap Semiconductor Crystal structure Hexagonal Phase Unit cell paramete