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Controlled Growth and Field‐Emission Properties of Cobalt Oxide Nanowalls
Author(s) -
Yu T.,
Zhu Y. W.,
Xu X. J.,
Shen Z. X.,
Chen P.,
Lim C.T.,
Thong J. T.L.,
Sow C.H.
Publication year - 2005
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200500322
Subject(s) - materials science , foil method , field electron emission , cobalt oxide , nanomaterials , nanotechnology , cobalt , oxide , optoelectronics , metallurgy , composite material , physics , quantum mechanics , electron
Vertically oriented single‐crystalline Co 3 O 4 nanowalls (see Figure) have been successfully fabricated by directly heating Co foil in air using a hot plate. The morphologies of the Co 3 O 4 nanowalls can be controlled by varying the growth temperature and time. The Co 3 O 4 nanowalls show promising field‐emission performance that is comparable to many other nanomaterials.