ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

The role of Cs⁺ inclusion in formamidinium lead triiodide-based perovskite solar cell

Manuel Salado, Samrana Kazim, and Shahzada Ahmad

Bld. Martina Casiano UPV/EHU Science Park, Leioa, Spain

E-mail: shahzada.ahmad@bcmaterials.net

Abstract: Herein, we report our observation of Cs⁺ inclusion in a formamidinium lead triiodide (Cs/FA)-based perovskite solar cells, further by employing electrochemical impedance spectroscopy techniques charge carrier’s generation and recombination was studied. Upon 45 days of ageing, no noticeable changes were observed for Cs/FA-based perovskite solar cells. Our findings suggest that though the inclusion of Cs imparts structural stability, reduces the hysteresis behavior, meanwhile the charge carrier’s dynamics remain unaltered; a vital clue for understanding their operating mechanism.

Keywords: Perovskite ; Solar cells ; Cesium ; Formamidinium ; Impedance spectroscopy 

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-017-0373-7

Chemical Papers 72 (7) 1645–1650 (2018)