Patent ID: 6159872
Filing Date: 2000-12-12
Classification: C23C,H01L

Abstract:
A process for forming a dielectric material comprising the steps of:forming silicon oxide by depositing by one of PECVD and HDPCVD a silicon oxide film having a thickness of between about 500 .ANG. and 1500 .ANG.; andion implanting sufficient concentrations of fluorine into the silicon oxide to lower a dielectric constant of the silicon oxide to below about 3.2 by,implanting .sup.19 F.sup.+ at an energy of about 13 KeV with a dose of between about 1.6.times.10.sup.15 ions/cm.sup.2 and 6.4.times.10.sup.15 ions/cm.sup.2implanting .sup.19 F.sup.+ at an energy of about 33 KeV with a dose of between about 3.9.times.10.sup.15 ions/cm.sup.2 and 1.5.times.10.sup.16 ions/cm.sup.2 ; andimplanting .sup.19 F.sup.+ at an energy of about 54 KeV with a dose of between about 5.0.times.10.sup.15 ions/cm.sup.2 and 2.0.times.10.sup.16 ions/cm.sup.2.