Continuous dripping method as a deposition route for highperformance mesoporous perovskite solar cells

The past five years have witnessed the uniquely rapid emergence of the mixed organic-inorganic halide perovskite solar cells. Here, a modified deposition process, continuous dripping method, is reported for fabricating high-performance and reproducible perovskite solar cells. The best power conversion efficiency (PCE) of 17.76 % and an average PCE of 16.74 % were obtained via this process. Moreover, the conventional solution two steps method was also carried out as a comparison to this process. This work provides a new simple solution approach to obtain high quality of perovskite thin films for high-performance and reproducible PSCs. (C) 2016 The Authors. Published by Elsevier Ltd.