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Synthesis and microstructural studies of annealed Cu 2 O/Cu x S bilayer as transparent electrode material for photovoltaic and energy storage devices
Author(s) -
TALEATU B. A.,
ARBAB E. A.A.,
OMOTOSO E.,
MOLA G. T.
Publication year - 2014
Publication title -
journal of microscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.569
H-Index - 111
eISSN - 1365-2818
pISSN - 0022-2720
DOI - 10.1111/jmi.12158
Subject(s) - crystallite , materials science , annealing (glass) , bilayer , scanning electron microscope , crystallinity , band gap , thin film , copper , chemical engineering , analytical chemistry (journal) , nanotechnology , optoelectronics , composite material , metallurgy , chemistry , biochemistry , chromatography , membrane , engineering
Summary Cu 2 O thin film and a transparent bilayer have been fabricated by electrodeposition method. The growths were obtained in potentiostatic mode with gradual degradation of anodic current. X‐ray diffraction (XRD) study showed that the bilayer is polycrystalline and it possesses mixture of different crystallite phases of copper oxides. Surface morphology of the films was investigated by scanning electron microscopy (SEM). The SEM images revealed that the films were uniformly distributed and the starting material (Cu 2 O) had cubical structure. Grains agglomeration and crystallinity were enhanced by annealing. Optical studies indicated that all the samples have direct allowed transition. Energy band gap of the bilayer film was reduced by annealing treatment thus corroborating quantum confinement upshot.