Electronic-Grade Silane Purification: Distillation, Adsorption, and Trace Boron/Phosphorus Control
Electronic-grade silane purification requires different separation mechanisms for different impurity classes. Crude SiH₄ can contain light gases, heavier silicon compounds, chlorosilane-related contaminants, and trace boron or phosphorus species that cannot all be controlled economically by the same operation. Silane distillation…