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Electrodeposition of quantum‐confined metal/semiconductor nanocomposites
Author(s) -
Switzer Jay A.,
Hung ChenJen,
Bohannan Eric W.,
Shumsky Mark G.,
Golden Teresa D.,
Van Aken David C.
Publication year - 1997
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.19970090411
Subject(s) - materials science , nanocomposite , copper , crystallite , quantum dot , semiconductor , electrode , aqueous solution , current density , cathodic protection , metal , nanotechnology , phase (matter) , chemical engineering , electrochemistry , analytical chemistry (journal) , optoelectronics , metallurgy , chemistry , organic chemistry , physics , quantum mechanics , engineering
Electrodepositiona s an approach to quantum confinement is the idea behind the work on nanocomposite films of Cu and Cu 2 O reported here. The phase of the film electrodeposited from an alkaline aqueous solution of copper(II) lactate depends on the cathodic current density used, varying from pure Cu 2 O (a p‐type semiconductor) to 98 mol‐% Cu, the color of the film changing correspondingly; the electrode potential oscilates spontaneously at fixed current density. It is shown that the Cu 2 O crystallites exhibit the optical properties of quantum dots.