%0 Journal Article %J Advanced Energy Materials %D 2016 %T Over 9% Efficient Kesterite Cu 2 ZnSnS 4 Solar Cell Fabricated by Using Zn 1- x Cd x S Buffer Layer %B Advanced Energy Materials %V 6 %P 1600046 %8 Jan-06-2016 %G eng %U http://doi.wiley.com/10.1002/aenm.201600046https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Faenm.201600046 %N 12 %! Adv. Energy Mater. %R 10.1002/aenm.201600046