Resolution of the enrichment of bismuth in thermoelectric materials grain boundary

Thermoelectric materials have produced from energy to the solid state cooling of a variety of applications.Bismuth telluride (Bi2Te3) and its alloys is the most commonly used thermoelectric materials electric refrigeration equipment.
Shown here is silver - lead - bi - (AgPb18BiTe20) figure, the grain boundary in bi.Lead and tellurium is uniformly distributed in the material, and the concentration of silver local fluctuations in the mini map is visible.Lead and bismuth in EDS spectrum has a strong overlap.ESPRIT 2 automatic peak fitting reconciliation convolution algorithm can distinguish between lead and bismuth peak peak with strong overlap.