Ge0.05Te1Pb0.95

Ge₀.₀₅Te₁Pb₀.₉₅ is a lead telluride-based narrow-bandgap semiconductor alloy, where small germanium additions modify the electronic and thermal properties of the PbTe host material. This compound belongs to the IV-VI semiconductor family and is primarily investigated for thermoelectric applications where efficient conversion between thermal and electrical energy is needed, particularly in mid-temperature regimes where PbTe is a leading candidate material. The germanium doping in PbTe-based systems can improve carrier mobility and optimize band structure for enhanced thermoelectric performance compared to undoped lead telluride.