Unraveling the nanoscale morphologies of mesoporous perovskite solar cells and their correlation to device performance - Nanova, Diana; Kast, Anne; Pfannmöller, Martin; Müller-Mai, Christian; Veith, Lisa; Wacker, Irene; Kowalsky, Wolfgang; Schröder, Rasmus R.; Lovrinčić, Robert (Nano letters, 2014)