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Novel Spray‐Pyrolysis Deposition of Cuprous Oxide Thin Films
Author(s) -
Kosugi Tsuyoshi,
Kaneko Shoji
Publication year - 1998
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1998.tb02746.x
Subject(s) - thin film , materials science , deposition (geology) , oxide , substrate (aquarium) , electrical resistivity and conductivity , chemical engineering , pyrolysis , surface roughness , copper , aqueous solution , spray pyrolysis , band gap , analytical chemistry (journal) , composite material , metallurgy , chemistry , nanotechnology , organic chemistry , optoelectronics , paleontology , oceanography , engineering , sediment , geology , electrical engineering , biology
Spray pyrolysis of aqueous solutions that include copper(II) acetate, glucose, and 2‐propanol was studied for the formation of cuprous oxide (Cu 2 O) thin films on glass substrates. The deposition conditions, based on the phase relations of the films, were investigated in terms of solution concentration and substrate temperature. Also, the formation process was kinetically discussed. The Cu 2 O thin film obtained here was composed of rounded grains ∼50 nm in size with a surface roughness of ∼30 nm. This film was reddish yellow and showed indirect and direct bandgap energies of 1.95 and 2.60 eV, respectively. Furthermore, the film exhibited p ‐type conduction, with a resistivity of ∼100 Omegacm.