Study of ethoxyethane deposition time and Co (III) complex doping on the performance of mesoscopic perovskite based solar cells

By Sidhik, Siraj; Esparza, Diego; L
Published in Solar Energy Materials and Solar Cells NULL 2017

Abstract

Abstract In this paper, we report a simple and highly reproducible strategy to fabricate a high-performance hysteresis-free organic-inorganic based perovskite solar cell (PSC). A single-step, fast deposition-crystallization method has been adopted for preparing {MAPbI3} based perovskite film. The role of ethoxyethane as an anti-solvent and the importance of deposition time in film crystallization have been investigated in detail. The solvent deposition time is observed to have a significant impact on the crystal growth and performance of PSCs. Intensive characterization, which includes scanning electron microscopy, UV-visible spectroscopy, X-ray diffraction studies and photovoltaic characterization, has been carried out to attribute the improved performance. In addition, the influence of {FK209} Co(III) complex doped in organic hole transporting material for better charge extraction and transportation in {PSC} has been discussed in detail. This proposed strategy, involving a co-solvent deposition time of 10 s and 1.3% doping of {FK209} Co (III) complex, provides a high 90% reproducible, hysteresis-free {PSC} with an average power conversion efficiency of 13.3% corresponding to an increment in photocurrent density (Jsc) by 31% and open circuit voltage (Voc) by 6%.

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