Patent ID: 6057250
Filing Date: 2000-05-02
Classification: C23C,H01L

Abstract:
A method of forming a fluorine doped borophosphosilicate glass (F-BPSG) on a semiconductor wafer in a low pressure chemical vapor deposition chamber comprising the steps of:mixing and reacting in a low pressure chemical vapor deposition chamber gaseous sources of TEOS, fluoroalkoxy silane, boron and phosphorous dopants and an oxygen source at a temperature of about 650 to 850.degree. C. and a pressure of about 0.5 to 5 torr;depositing a layer of fluorine doped BPSG on a semiconductor substrate disposed in the chamber; andreflowing the layered F-BPSG on the semiconductor substrate at a temperature below about 800.degree. C. for an effective time to planarize the deposited layer.