Listed in Table 1, are the results of a mass balance
analysis for the PECVD and CVD reactions, using the
same process conditions as given in the preceding paragraph.
The zinc in the film is calculated from the volume of
the deposit times an assumed density of 5:6g=cm3 [13]. The
deposition efficiency is obtained by dividing the Zn in the
film by the amount of Zn fed to the reactor. The film
deposited by PECVD with O2 exhibited an average growth
rate of 37 nm/min, and a deposition efficiency of 17%.
Films grown by PECVD with carbon dioxide or CVD with
oxygen yielded slightly lower growth rates of 33 nm/min,
and the same deposition efficiency. On the other hand,
thermal CVD with CO2 exhibited the lowest growth rate
and efficiency, most likely due to the lower reactivity of
carbon dioxide with diethylzinc.