@article{c0545fbddb2a4ed68daeea21f773b59d,
title = "Efficiency Enhancement of Single-Walled Carbon Nanotube-Silicon Heterojunction Solar Cells Using Microwave-Exfoliated Few-Layer Black Phosphorus",
abstract = "Carbon nanotube-silicon (CNT-Si)-based heterojunction solar cells (HJSCs) are a promising photovoltaic (PV) system. Herein, few-layer black phosphorus (FL-BP) sheets are produced in N-methyl-2-pyrrolidone (NMP) using microwave-assisted liquid-phase exfoliation and introduced into the CNTs-Si-based HJSCs for the first time. The NMP-based FL-BP sheets remain stable after mixing with aqueous CNT dispersion for device fabrication. Due to their unique 2D structure and p-type dominated conduction, the FL-BP/NMP incorporated CNT-Si devices show an impressive improvement in the power conversion efficiency from 7.52% (control CNT-Si cell) to 9.37%. Our density-functional theory calculation reveals that lowest unoccupied molecular orbital (LUMO) of FL-BP is higher in energy than that of single-walled CNT. Therefore, we observed a reduction in the orbitals localized on FL-BP upon highest occupied molecular orbital to LUMO transition, which corresponds to an improved charge transport. This study opens a new avenue in utilizing 2D phosphorene nanosheets for next-generation PVs.",
keywords = "2D materials, black phosphorus, carbon nanotubes, phosphorene, solar cells",
author = "Munkhjargal Bat-Erdene and Munkhbayar Batmunkh and Tawfik, {Sherif Abdulkader} and Marco Fronzi and Ford, {Michael J.} and Shearer, {Cameron J.} and Yu, {Le Ping} and Mahnaz Dadkhah and Gascooke, {Jason R.} and Gibson, {Christopher T.} and Shapter, {Joseph G.}",
note = "Funding Information: M.B.-E. and M.B. contributed equally to this work. The authors acknowledge the use of South Australian node of the Australian Microscopy & Microanalysis Research Facility (AMMRF) and the Australian National Fabrication Facility (ANFF) at Flinders University. The support of the Australian Research Council Discovery Program (Grant Nos. DP150101354 and DP160101301) is gratefully acknowledged. Theoretical calculations were undertaken with resources provided by the National Computational Infrastructure (NCI) supported by the Australian Government and by the Pawsey Supercomputing Centre funded by the Australian Government and the Government of Western Australia. Publisher Copyright: {\textcopyright} 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim",
year = "2017",
month = dec,
day = "22",
doi = "10.1002/adfm.201704488",
language = "English",
volume = "27",
journal = "Advanced Materials for Optics and Electronics",
issn = "1057-9257",
publisher = "Wiley-VCH Verlag",
number = "48",
}