1 Supplementary Information Realizing LargeScale, ElectronicGrade TwoDimensional Semiconductors YuChuan Lin 1† , Bhakti Jariwala 1† , Brian M. Bersch 1 , Ke Xu 2 , Yifan Nie 3 , Baoming Wang 4 , Sarah M. Eichfeld 1 , Xiaotian Zhang 1 , Tanushree H. Choudhury 5 , Yi Pan 6 , Rafik Addou, 3 Christopher M. Smyth 3 , Jun Li 7 , Kehao Zhang 1 , M. Aman Haque 4 , Stefan Fölsch 6 , Randall M. Feenstra, 7 Robert M. Wallace, 3 Kyeongjae Cho 3 , Susan K. FullertonShirey 2,8 , Joan M. Redwing 1,5 , and Joshua A. Robinson 1,5‡                   ! "#  $# $# "% "& ’() $ *      "  $#  "+ "+ "& ,- $ * -       ! $#  !.    !/ 0,)() $ * 1     ! "#  $# $# "% "& ’() $ * , !23    ! "#  $# $# "% "& ’() $ * ’ "33 4 5%6%% 7#8 ,30 9 )0 :* 0   "   $# "+ "& ,- $ * (       $#  "+ "+ "& ,- $ * ; + < =  : jrobinson@psu.edu