Title: Biblio RTF Export
Author: Biblio 7.x

P.  Jackson, Wuerz, R., Hariskos, D., Lotter, E., Witte, W., and Powalla, M., ?Effects of heavy alkali elements in Cu (In, Ga) Se_2 solar cells with efficiencies up to 22.6%?, physica status solidi (RRL)?Rapid Research Letters, vol. 10, pp. 583?586, 2016.

M.  Powalla et al., ?High-efficiency Cu(In,Ga)Se_2 cells and modules?, Solar energy materials and solar cells, vol. 119, pp. 51?58, 2013.