Abstract:
A method for forming a layer for a semiconductor process is provided to form an insulation layer with a predetermined thickness by relatively reducing an etch rate in a cleaning process even if a layer is formed at a relatively low temperature. In a first process, first process gas and foregoing gas as one of third and fourth process gases with respect to a process region are supplied while second process gas and following gas as the other of the third and fourth process gases with respect to the process region stop their supply. While the following gas with respect to the process region is supplied, the supply of the foregoing gas and the second process gas with respect to the process region is stopped in a second process. While the second process gas with respect to the process region is supplied, the supply of the first process gas with respect to the process region is stopped in a third process. A cycle alternately including first, second and third processes is repeated several times so that thin films stacked by the cycle are stacked to form an insulation layer with a predetermined thickness. Each cycle can include an intervening process between the second and third processes so that the process region is exhausted while the supply of the first, second, third and fourth process gases with respect to the process region is stopped.
Abstract:
반도체 처리용 성막 방법은, 실리콘 소스 가스와 금속 소스 가스가 선택적으로 공급 가능한 처리 용기의 처리 영역 내에서, 피처리 기판 상에 금속 도프된 실리콘 함유 절연막을 형성하는 성막 처리를 행한다. 성막 처리는 상기 금속 소스 가스의 공급의 차단을 유지하는 동시에, 상기 실리콘 소스 가스를 화학적으로 반응시켜 제1 절연 박층을 형성하는 공정과, 다음에 상기 실리콘 소스 가스의 공급의 차단을 유지하는 동시에, 상기 금속 소스 가스를 화학적으로 반응시켜 제1 금속 박층을 형성하는 공정과, 다음에 상기 금속 소스 가스의 공급의 차단을 유지하는 동시에, 상기 실리콘 소스 가스를 화학적으로 반응시켜 제2 절연 박층을 형성하는 공정을 구비한다. 절연 박층, 금속 박층, 실리콘 소스 가스, 금속 소스 가스, 성막 장치
Abstract:
An insulating film is formed on a target substrate by CVD, in a process field to be selectively supplied with a first process gas containing a silane family gas, a second process gas containing a nitriding gas or oxynitriding gas, a third process gas containing a boron-containing gas, and a fourth process gas containing a carbon hydride gas. A first step performs supply of the first process gas and a preceding gas, which is one of the third and fourth process gases, while stopping supply of the second process gas and a succeeding gas, which is the other of the third and fourth process gases. A second step performs supply of the succeeding gas, while stopping supply of the second process gas and the preceding gas. A third step performs supply of the second process gas while stopping supply of the first process gas.
Abstract:
PURPOSE: A film forming method for a semiconductor process is provided to control metal concentration in forming a metal doped insulation film including silicon. CONSTITUTION: While supply of a metal source gas is blocked, a first insulation film is formed by chemically reacting to a silicon source gas(S1). While supply of the silicon source gas is blocked, a first metal film is formed by chemically reacting to the metal source gas(S2). While supply of the metal source gas is blocked, a second insulation film is formed by chemically reacting to the silicon source gas(S3). The first insulation film, the first metal film, and the second insulation film are successively laminated.