Pb0.9Ge0.1Te

Pb0.9Ge0.1Te is a lead telluride-based semiconductor alloy with germanium doping, belonging to the IV-VI narrow bandgap semiconductor family. This material is primarily investigated for thermoelectric applications where its ability to convert heat directly into electrical current is valuable, particularly in mid-to-high temperature regimes (200–600 K). Lead telluride compounds are preferred over alternatives like bismuth telluride in higher-temperature thermoelectric systems because of their higher Seebeck coefficients and thermal stability, though germanium alloying is used to optimize band structure and carrier concentration for enhanced performance.