“…Generally, optical and photoelectric properties of the PbSe thin films can be improved by doped with other elements, such as Te [8], S [9], Sn [10], Cd [11], Sr [12], etc., since the band structure, especially the band gap and the density of states (DOS) of PbSe, can be modified by these doping elements. Te element has attracted great attention due to the superior photoelectric and thermoelectric properties of the PbSeTe materials.…”