@article {Kumar2015, title = {Strategic review of secondary phases, defects and defect-complexes in kesterite CZTS{\textendash}Se solar cells}, journal = {Energy Environ. Sci.}, volume = {8}, year = {2015}, month = {Jan-01-2015}, pages = {3134 - 3159}, issn = {1754-5692}, doi = {10.1039/C5EE02153G}, url = {http://xlink.rsc.org/?DOI=C5EE02153G}, author = {Kumar, Mukesh and Dubey, Ashish and Adhikari, Nirmal and Venkatesan, Swaminathan and Qiao, Qiquan} } @article {Shockley1961, title = {Detailed Balance Limit of Efficiency of p-n Junction Solar Cells}, journal = {Journal of Applied Physics}, volume = {32}, number = {3}, year = {1961}, pages = {510-519}, publisher = {AIP}, doi = {10.1063/1.1736034}, url = {http://link.aip.org/link/?JAP/32/510/1}, author = {William Shockley and Hans J. Queisser} }