Patent ID: 7264849

Claim:
A method of thin-silicon chemical vapor deposition (CVD), comprising: spawning a hydrogen plasma cloud proximate to a workpiece substrate in a deposition chamber with an RF-field generator; injecting a gas into said hydrogen plasma cloud during operation from a silane input so as to roll said hydrogen plasma cloud into a coaxial vortex; injecting p-type impurities, n-type impurities, or no impurities into said hydrogen plasma cloud during operation which provides for alternative deposition of p-type, n-type, and intrinsic silicon layers having substantially equal effective concentrations of said p-type and n-type impurities, respectively, on said workpiece substrate; and receiving a deposition gas mixture from said deposition chamber through an exhaust system; wherein, a controlled pressure and a consistent concentration of said silane gas is provided for in said hydrogen plasma cloud during operation.