J. Aarik et al., DEPOSITION AND ETCHING OF TANTALUM OXIDE-FILMS IN ATOMIC LAYER EPITAXY PROCESS, Journal of crystal growth, 144(1-2), 1994, pp. 116-119
Effects of the reactor temperature and TaCl5-precursor dose on the ato
mic layer epitaxy (ALE) growth of tantalum oxide films are studied. It
is shown that etching takes place instead of growth when high TaCl5 d
oses are used. The etching rate is enhanced by increase of the reactor
temperature. In the case of optimum precursor doses, a growth rate eq
ual to 0.06 nm per cycle was obtained at 300 degrees C growth temperat
ure.