Efficiency Enhancement of Single-Walled Carbon Nanotube-Silicon Heterojunction Solar Cells Using Microwave-Exfoliated Few-Layer Black Phosphorus

Bat-Erdene, M, Batmunkh, M, Abbas, S, Fronzi, M, Ford, M, Shearer, C, Yu, L, Dadkhah, M, Gascooke, J, Gibson, C and Shapter, J 2017, 'Efficiency Enhancement of Single-Walled Carbon Nanotube-Silicon Heterojunction Solar Cells Using Microwave-Exfoliated Few-Layer Black Phosphorus', Advanced Functional Materials, vol. 27, no. 48, pp. 1-9.


Document type: Journal Article
Collection: Journal Articles

Title Efficiency Enhancement of Single-Walled Carbon Nanotube-Silicon Heterojunction Solar Cells Using Microwave-Exfoliated Few-Layer Black Phosphorus
Author(s) Bat-Erdene, M
Batmunkh, M
Abbas, S
Fronzi, M
Ford, M
Shearer, C
Yu, L
Dadkhah, M
Gascooke, J
Gibson, C
Shapter, J
Year 2017
Journal name Advanced Functional Materials
Volume number 27
Issue number 48
Start page 1
End page 9
Total pages 9
Publisher Wiley - V C H Verlag GmbH & Co. KGaA
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.
Subject Electronic and Magnetic Properties of Condensed Matter; Superconductivity
Condensed Matter Modelling and Density Functional Theory
Quantum Chemistry
Keyword(s) 2D materials
black phosphorus
carbon nanotubes
phosphorene
solar cells
DOI - identifier 10.1002/adfm.201704488
Copyright notice © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
ISSN 1616-301X
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