TY - JOUR T1 - Cd-Free Cu(In,Ga)(Se,S)2 Thin-Film Solar Cell With Record Efficiency of 23.35% JF - IEEE Journal of Photovoltaics Y1 - 2019 A1 - M. Nakamura A1 - K. Yamaguchi A1 - Y. Kimoto A1 - Y. Yasaki A1 - T. Kato A1 - H. Sugimoto VL - 9 UR - https://ieeexplore-ieee-org.udel.idm.oclc.org/document/8825469/authors#authors KW - Nakamura2019Cdfree ER -