sputtering. X‐ray diffraction, SEM, and photoemission electron microscope studies were
carried out to characterize the films. An influence of the nature of substrate on the Cu2O and
CuO phases formed was observed. Copper silicide formation in case of silicon substrates
aided in formation of Cu2O rather than CuO unlike glass and quartz substrates. Formation of
nanocrystallites was observed by SEM and X‐ray diffraction. Copyright© 2016 John Wiley & …