Light scattering from a nanopatterned back contact enables 7 times thinner CIGS solar cells while maintaining the current at 93% of the world record and raising the voltage.
Optoelectronic enhancement of ultrathin CuInGaSe Solar Cells by nanophotonic contacts
G. Yin, M.W. Knight, M.C. van Lare, M. Solà Garcia, A. Polman, and M. Schmid, Adv. Opt. Mater. 1600637 (2017)