Ambient protection of few-layer black phosphorus via sequestration of reactive oxygen species

Walia, S, Balendhran, S, Ahmed, T, Singh, M, El-Badawi, C, Brennan, M, Weerathunge, P, Karim, M, Rahman, F, Rassell, A, Duckworth, J, Ramanathan, R, Collis, G, Lobo, C, Toth, M, Kotsakidis, J, Weber, B, Fuhrer, M, Dominguez-Vera, J, Spencer, M, Aharonovich, I, Sriram, S, Bhaskaran, M and Bansal, V 2017, 'Ambient protection of few-layer black phosphorus via sequestration of reactive oxygen species', Advanced Materials, vol. 29, no. 27, 1700152, pp. 1-8.


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Title Ambient protection of few-layer black phosphorus via sequestration of reactive oxygen species
Author(s) Walia, S
Balendhran, S
Ahmed, T
Singh, M
El-Badawi, C
Brennan, M
Weerathunge, P
Karim, M
Rahman, F
Rassell, A
Duckworth, J
Ramanathan, R
Collis, G
Lobo, C
Toth, M
Kotsakidis, J
Weber, B
Fuhrer, M
Dominguez-Vera, J
Spencer, M
Aharonovich, I
Sriram, S
Bhaskaran, M
Bansal, V
Year 2017
Journal name Advanced Materials
Volume number 29
Issue number 27
Article Number 1700152
Start page 1
End page 8
Total pages 8
Publisher Wiley
Abstract Few-layer black phosphorous (BP) has emerged as a promising candidate for next-generation nanophotonic and nanoelectronic devices. However, rapid ambient degradation of mechanically exfoliated BP poses challenges in its practical deployment in scalable devices. To date, the strategies employed to protect BP have relied upon preventing its exposure to atmospheric conditions. Here, an approach that allows this sensitive material to remain stable without requiring its isolation from the ambient environment is reported. The method draws inspiration from the unique ability of biological systems to avoid photo-oxidative damage caused by reactive oxygen species. Since BP undergoes similar photo-oxidative degradation, imidazolium-based ionic liquids are employed as quenchers of these damaging species on the BP surface. This chemical sequestration strategy allows BP to remain stable for over 13 weeks, while retaining its key electronic characteristics. This study opens opportunities to practically implement BP and other environmentally sensitive 2D materials for electronic applications. © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Subject Nanomaterials
Keyword(s) 2D materials
black phosphorus
degradation
ionic liquids
phosphorene
stability
DOI - identifier 10.1002/adma.201700152
Copyright notice © 2017 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim
ISSN 0935-9648
Additional Notes DP140100170
This is the peer reviewed version of the following article: Walia, S, Balendhran, S, Ahmed, T, Singh, M, El-Badawi, C, Brennan, M, Weerathunge, P, Karim, M, Rahman, F, Rassell, A, Duckworth, J, Ramanathan, R, Collis, G, Lobo, C, Toth, M, Kotsakidis, J, Weber, B, Fuhrer, M, Dominguez-Vera, J, Spencer, M, Aharonovich, I, Sriram, S, Bhaskaran, M and Bansal, V 2017, 'Ambient protection of few-layer black phosphorus via sequestration of reactive oxygen species', Advanced Materials, vol. 29, no. 27, 1700152, pp. 1-8, which has been published in final form at https://dx.doi.org/10.1002/adma.201700152. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.
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