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How Oxygen Absorption Affects the Al 2 O 3 ‐Encapsulated Blue Phosphorene–Au Alloy
Author(s) -
Faraone Gabriele,
Martella Christian,
Bonera Emiliano,
Molle Alessandro,
Grazianetti Carlo
Publication year - 2021
Publication title -
physica status solidi (rrl) – rapid research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.786
H-Index - 68
eISSN - 1862-6270
pISSN - 1862-6254
DOI - 10.1002/pssr.202100217
Subject(s) - phosphorene , alloy , graphene , substrate (aquarium) , materials science , oxygen , molecular oxygen , absorption (acoustics) , spectroscopy , intercalation (chemistry) , nanotechnology , chemical engineering , chemistry , metallurgy , inorganic chemistry , composite material , physics , organic chemistry , oceanography , geology , engineering , quantum mechanics
The urgent quest to introduce the Xenes, a new family of graphene‐like materials, into everyday technological devices furthers demands for a specific understanding of their reactivity to different environments. Herein, the role of oxygen on blue phosphorene fragments alloyed with the Au(111) substrate, the so‐called BlueP–Au alloy, is investigated both on a microscopic scale and at the interface with Al 2 O 3 , commonly used to protect Xenes in ambient conditions. Although molecular oxygen does not affect the BlueP–Au alloy or intercalate below it, the role of oxygen is fundamental to relieve the charging effects at the very interface between Al 2 O 3 and the BlueP–Au alloy when exposed to air. These findings highlight the importance of combining different tools, including microscopy and spectroscopy, to ascertain the stability of 2D materials in device‐ready configurations.