Ion energy distributions in a pulsed plasma doping system
2005
Discharge parameters in a pulsed dc plasma doping system have been studied using measurements of time-resolved ion energy distributions, relative ion density, plasma potential, and electron temperature in BF3 and Ar plasmas during active discharge and afterglow periods. Negative plasma potentials are observed when using a hollow cathode to create a plasma while implanting at ultralow energies (<500eV). The kinetics of ion generation and decay in BF3 during the pulse on and off periods have been discussed.
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