Semiconducting Monolayer Materials as a Tunable Platform for Excitonic Solar Cells
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Grossman_Semiconducting monolayer.pdf
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618.19 KB
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Author(s)
Bernardi, Marco
Palummo, Maurizia
Grossman, Jeffrey C.
Date Issued
October 2012
Journal
ACS Nano
Publisher
American Chemical Society (ACS)
Citation
Bernardi, Marco, Maurizia Palummo, and Jeffrey C. Grossman. “Semiconducting Monolayer Materials as a Tunable Platform for Excitonic Solar Cells.” ACS Nano 6, no. 11 (November 27, 2012): 10082-10089.
Version
Author's final manuscript
Abstract
The recent advent of two-dimensional monolayer materials with tunable optical properties and high carrier mobility offers renewed opportunities for efficient, ultrathin excitonic solar cells alternative to those based on conjugated polymer and small molecule donors. Using first-principles density functional theory and many-body calculations, we demonstrate that monolayers of hexagonal BN and graphene (CBN) combined with commonly used acceptors such as PCBM fullerene or semiconducting carbon nanotubes can provide excitonic solar cells with tunable absorber gap, donor–acceptor interface band alignment, and power conversion efficiency, as well as novel device architectures. For the case of CBN–PCBM devices, we predict power conversion efficiency limits in the 10–20% range depending on the CBN monolayer structure. Our results demonstrate the possibility of using monolayer materials in tunable, efficient, ultrathin solar cells in which unexplored exciton and carrier transport regimes are at play.
Description
25 Jun 2012 Author Manuscript
MIT Department
Massachusetts Institute of Technology. Department of Materials Science and Engineering
Terms of Use
Creative Commons Attribution-Noncommercial-Share Alike 3.0
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1021/nn303815z
