Efficient production of phosphorene nanosheets via shear stress mediated exfoliation for low‐temperature perovskite solar cells
File(s)accepted version sm .doc (3.79 MB)
Accepted version
Author(s)
Type
Journal Article
Abstract
A simple and fast “top‐down” protocol is introduced herein to prepare solution processable few‐layer phosphorene nanosheets using vortex fluidic mediated exfoliation under near‐infrared (NIR) pulsed laser irradiation. This novel shear‐exfoliation method requires short processing times and produces highly crystalline, atomically thin phosphorene nanosheets (4.3 ± 0.4 nm). The as‐prepared phosphorene nanosheets are used as an effective electron transporting material (ETM) for low‐temperature processed, planar n‐i‐p perovskite solar cells (PSCs). With the addition of phosphorene, the average power conversion efficiency (PCE) increases from 14.32% to 16.53% with a maximum PCE of 17.85% observed for the phosphorene incorporated PSCs which is comparable to the devices made using the traditional high‐temperature protocol. Experimental and theoretical (density‐functional theory) investigations reveal the PCE improvements are due to the high carrier mobility and suitable band energy alignment of the phosphorene. The work not only paves the way for novel synthesis of 2D materials, but also opens a new avenue in using phosphorene as an efficient ETM in photovoltaic devices.
Date Issued
2019-05
Online Publication Date
2020-04-29T14:30:47Z
Date Acceptance
2019-02-01
ISSN
2366-9608
Publisher
Wiley
Start Page
1
End Page
8
Journal / Book Title
Small Methods
Volume
3
Issue
5
Copyright Statement
© 2019 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim. This is the accepted version of the following article: Batmunkh, M., Vimalanathan, K., Wu, C., Bati, A. S. R., Yu, L., Tawfik, S. A., Ford, M. J., Macdonald, T. J., Raston, C. L., Priya, S., Gibson, C. T., Shapter, J. G., Small Methods 2019, 3, 1800521, which has been published in final form at https://doi.org/10.1002/smtd.201800521
Identifier
https://onlinelibrary.wiley.com/doi/full/10.1002/smtd.201800521
Publication Status
Published
Date Publish Online
2019-02-08