2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/124696Based on the Gauss law for the electric field, a new integral formula is deduced together with one of its possible applications, in the area of semiconductor junctions, specifically an analytical formula for the built-in potential of diffused semiconductor junctions. The measurement technique for the determination of the built-in voltage is also described.4 pagesMaterials Sciencetext