Unreacted PbI 2 as a Double-Edged Sword for Enhancing the Performance of Perovskite Solar Cells
University of Cambridge · École Polytechnique Fédérale de Lausanne · +4 more institutions
Abstract
Lead halide perovskites have over the past few years attracted considerable interest as photo absorbers in PV applications with record efficiencies now reaching 22%. It has recently been found that not only the composition but also the precise stoichiometry is important for the device performance. Recent reports have, for example, demonstrated small amount of PbI2 in the perovskite films to be beneficial for the overall performance of both the standard perovskite, CH3NH3PbI3, as well as for the mixed perovskites (CH3NH3)x(CH(NH2)2)(1-x)PbBryI(3-y). In this work a broad range of characterization techniques including X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy…
Citation impact
- FWCI
- 51.51
- Percentile
- 100%
- References
- 79
Authors
12- TJT. Jesper Jacobsson
University of Cambridge, École Polytechnique Fédérale de Lausanne
- JCJuan‐Pablo Correa‐Baena
École Polytechnique Fédérale de Lausanne
- EHElham Halvani Anaraki
Isfahan University of Technology, École Polytechnique Fédérale de Lausanne
- BPBertrand Philippe
Uppsala University
- SDSamuel D. Stranks
Cavendish Hospital, Massachusetts Institute of Technology
Topics & keywords
- Perovskite (structure)
- Photoluminescence
- Chemistry
- Photocurrent
- Charge carrier
- Spectroscopy
- Scanning electron microscope
- Electroluminescence