PTAS (nucleation promoter)
Please click on liquid and solid phase perylene-3,4,9,10-tetracarboxylic acid tetrapotassium salt (PTAS) organics for more details.
The only commercially available PTAS organic salt. This is the type of nucleation promoter actively used by our R&D team to product variety of large area 1cm2 to wafer scale CVD products. Examples include CVD MoS2, MoSe2, WS2, WSe2, ReS2, ReSe2, PtS2, PtSe2, SnS2, and SnSe2.
Solution form ~200mL solution. Our CVD products require ~10uM (for Mo, W based TMDCs) to ~1mM concentration of PTAS for (Pt, Re, and Sn based TMDCs). The solution is intentionally packaged in 2mL bottle in liquid form at 2mM concentration to make ~200mL to 2L of solution. Thus, 2 mL bottle should be diluted to 200mL (using DI water) to grow CVD MoS2, MoSe2, WS2, and WSe2 monolayers.
Solid form PTAS. We also offer solid phase PTAS organics as a nucleation promoter for our customer to try out their own concentration recipes. It is particularly useful if the recipe calls for highly condensed concentrations of PTAS typical for Bi2Se3, Bi2Te3, and other 2D layer growth.