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We present here a planar perovskite solar cell with a stabilized power conversion efficiency (PCE) of 17.6% at the maximum power point and a PCE of 17% extracted from quasi-static J–V with an open-circuit voltage of 1.11 V. Such excellent figures of merit can be achieved by engineering a solution-processed electron buffer layer that does not require high temperature steps. A compact thin film of perovskite absorber is grown onto a PCBM-based electron extraction layer by implementing a novel two-step procedure which preserves the soluble organic interlayer during the deposition of successive layers. We demonstrate that efficient charge extraction is the key for high steady state efficiency in perovskite solar cells with a highly integrable architecture.
Royal Society of Chemistry
Publication date: 
1 Jan 2015

Chen Tao, Stefanie Neutzner, Letizia Colella, Sergio Marras, Ajay Ram Srimath Kandada, Marina Gandini, Michele De Bastiani, Giuseppina Pace, Liberato Manna, Mario Caironi, Chiara Bertarelli, Annamaria Petrozza

Biblio References: 
Volume: 8 Issue: 8 Pages: 2365-2370
Energy & Environmental Science