ISSN:
1089-7623
Source:
AIP Digital Archive
Topics:
Physics
,
Electrical Engineering, Measurement and Control Technology
Notes:
A high-flux atomic oxygen source has been developed for the deposition of in situ superconducting high Tc films under conditions that require low chamber pressures (≤10−4 Torr). The source uses a remote microwave plasma to generate the atomic species and is capable of producing an atomic oxygen flux greater than 2×1016 cm−2 s−1. The O2 dissociation efficiency of the atomic oxygen source is measured to be approximately 25%–30% for an O2 flow of 5 sccm. This high efficiency is achieved by the combined effects of a boric acid surface treatment to minimize recombination on the quartz tube and the addition of N2 to the oxygen plasma to increase the atomic oxygen yield. We have developed a treatment for the quartz surface that gives reproducible atomic oxygen flux with no degradation of the surface coating with repeated usage.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.1143226
Permalink