@article {Gokmen2013,
	title = {Band tailing and efficiency limitation in kesterite solar cells},
	journal = {Applied Physics Letters},
	volume = {103},
	year = {2013},
	pages = {103506},
	doi = {10.1063/1.4820250},
	url = {http://dx.doi.org/10.1063/1.4820250},
	author = {Tayfun Gokmen and Oki Gunawan and Teodor K. Todorov and David B. Mitzi}
}
