In article number 1700809 by Jung Inn Sohn, SeungNam Cha, and co-workers, flexible quantum dot solar cells mediated by a porous piezoelectric poly(vinylidenefluoride-trifluoroethylene) layer are presented for an advanced energy harvesting technology. An induced piezoelectric potential modulates junction properties of the solar cells, resulting in efficient transport and a reduced non-radiative recombination of photo-generated charge carriers and consequently significant improvements in flexible quantum dot solar cell performances.