Depth profiling of oxygen in indium tin oxide (ITO) films, fabricated
by a hot cathode Penning discharge sputtering (HC-PDS) on glass substr
ates with negative substrate voltage in Ar atmosphere has been investi
gated using a high-energy ion beam. The substrate bias voltage was cha
nged from -100 to 0 V. The oxygen content in the deposited film change
d with substrate bias voltage. it was considered that Ar ion bombardme
nt affected the change in oxygen composition. Correlation between oxyg
en content and the electrical and optical properties will be discussed
.