TY - JOUR T1 - Trigonal Cu 2 -II-Sn-VI 4 (II = Ba, Sr and VI = S, Se) quaternary compounds for earth-abundant photovoltaics JF - Phys. Chem. Chem. Phys. Y1 - 2016 VL - 18 UR - http://xlink.rsc.org/?DOI=C5CP06977G CP - 6 J1 - Phys. Chem. Chem. Phys. KW - Hong2016 ER -