Jump to main content
Jump to site search


Edge functionalized graphene nanoribbons with tunable band edges for carrier transport interlayers in organic–inorganic perovskite solar cells

Author affiliations

Abstract

Organic based graphene nanoribbons (GNRs) can be good candidates as carrier extraction interlayers for organic/inorganic hybrid perovskite solar cells, owing to the possibility of tuning the band edge energy levels through varying the width and the type of edge functionalization. By using the density functional theory (DFT) method, the electronic structures of H or F edge functionalized armchair type GNRs on MAPbI3(001) are calculated. It is shown that the electronic structure of H- or F-passivated GNRs is almost undisrupted by the non-covalent interaction with the PbI2 surface layer of MAPbI3(001), thereby one can tune the width and edge chemistry of GNRs to enhance the carrier extraction or blocking. Especially all H-GNRs five to ten carbon atoms wide exhibit good matching for hole extraction, while F-GNRs require a specific width for electron extraction. Exploiting the unzipping synthesis of carbon nanotubes in the solution phase, our result provides a facile strategy for efficient carrier extraction.

Graphical abstract: Edge functionalized graphene nanoribbons with tunable band edges for carrier transport interlayers in organic–inorganic perovskite solar cells

Back to tab navigation

Supplementary files

Article information


Submitted
28 Nov 2019
Accepted
06 Jan 2020
First published
06 Jan 2020

Phys. Chem. Chem. Phys., 2020, Advance Article
Article type
Paper

Edge functionalized graphene nanoribbons with tunable band edges for carrier transport interlayers in organic–inorganic perovskite solar cells

E. M. Kim, S. Javaid, J. H. Park and G. Lee, Phys. Chem. Chem. Phys., 2020, Advance Article , DOI: 10.1039/C9CP06430C

Social activity

Search articles by author

Spotlight

Advertisements