Degradation of black phosphorus is contingent on UV-blue light exposure

Ahmed, T, Balendhran, S, Karim, M, Mayes, E, Field, M, Ramanathan, R, Singh, M, Bansal, V, Sriram, S, Bhaskaran, M and Walia, S 2017, 'Degradation of black phosphorus is contingent on UV-blue light exposure', npj 2D Materials and Applications, vol. 1, 18, pp. 1-7.

Document type: Journal Article
Collection: Journal Articles

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Title Degradation of black phosphorus is contingent on UV-blue light exposure
Author(s) Ahmed, T
Balendhran, S
Karim, M
Mayes, E
Field, M
Ramanathan, R
Singh, M
Bansal, V
Sriram, S
Bhaskaran, M
Walia, S
Year 2017
Journal name npj 2D Materials and Applications
Volume number 1
Article Number 18
Start page 1
End page 7
Total pages 7
Publisher Nature Publishing Group
Abstract Layered black phosphorous has recently emerged as a promising candidate for next generation nanoelectronic devices. However, the rapid ambient degradation of mechanically exfoliated black phosphorous poses challenges in its practical implementation in scalable devices. As photo-oxidation has been identified as the main cause of degradation, to-date, the strategies employed to protect black phosphorous have relied upon preventing its exposure to atmospheric oxygen. These strategies inhibit access to the material limiting its use. An understanding of the effect of individual wavelengths of the light spectrum can lead to alternatives that do not require the complete isolation of black phosphorous from ambient environment. Here, we determine the influence of discrete wavelengths ranging from ultraviolet to infrared on the degradation of black phosphorous. It is shown that the ultraviolet component of the spectrum is primarily responsible for the deterioration of black phosphorous in ambient conditions. Based on these results, new insights into the degradation mechanism have been generated which will enable the handling and operating of black phosphorous in standard fabrication laboratory environments.
Subject Functional Materials
Keyword(s) Two-dimensional materials
Black phosphorus
Functional materials and microsystems
DOI - identifier 10.1038/s41699-017-0023-5
Copyright notice The Author(s) 2017. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. To view a copy of this license, visit:
ISSN 2397-7132
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