This product contains full area coverage WSe2 few-layers that measure 3-5 layers in thickness. Sheets are grown through chemical vapor deposition technique onto c-cut double side polished sapphire substrates. Few-layer WSe2 sheets can also be transferred onto desired substrates, such as quartz, SiO2/Si, metal surfaces etc., on demand. The sample is 1cmx1cm in size and the entire sample surface contains few-layer thick WSe2 sheet. Grown few-layers are high-crystalline as evidenced by HR-TEM, Raman, EDS, and XRD measurements.
|Sample size||1cm x 1cm in size|
|Substrate type||(0001) c-cut sapphire (other substrates on request)|
|Coverage||Full coverage few-layers that measure 3-5 layers|
|Crystal structure||Hexagonal Phase|
|Unit cell parameters||a = b = 0.327 nm, c = 1.295 nm, α = β = 90°, γ = 120°|
|Production method||Low pressure Chemical Vapor Deposition (LPCVD)|
|Characterization methods||Raman, photoluminescence, TEM, EDS|