Composition and Electrostatic Properties of Grain Boundaries in Cu(In,Ga)Se2 - Schock, HW; Rissom, T; Cojocaru-Mirédin, O; Schaffer, M; Schaffer, B; Kochk, CT; Unold, T; Abou-Ras, D; Schmidt, SS; Caballero Mesa, Ana Raquel (2011)