Patent ID: 7163719
Filing Date: 2007-01-16
Classification: C23C

Abstract:
1. A method of depositing a thin film using a hafnium compound on a wafer, the thin film being formed of HfSi x O y using a reaction chamber comprising a reactor block in which a wafer block is received; a top lid for covering the reactor block to maintain a predetermined pressure; and a shower head installed under the top lid and including a plurality of first spray holes for spraying a first reactive gas on the wafer, a plurality of second spray holes for spraying a second reactive gas on the wafer, and a plurality of third spray holes for spraying a third reactive gas on the wafer, the method comprising: mounting the wafer on the wafer block; and depositing the HfSi depositing a primary thin film; and depositing a secondary thin film, the depositing the HfSi the depositing the primary thin film step comprising: feeding the first reactive gas by spraying TEMAH(Hf((C purging the first reactive gas by spraying an inert gas through all the spray holes of the shower head; feeding the third reactive gas by spraying one of O purging the third reactive gas by spraying the inert gas through all the spray holes of the shower head, the depositing the primary thin film being performed by repeating the feeding the first reactive gas, the purging the first reactive gas, the feeding the third reactive gas, and the purging the third reactive gas a plurality of (N) times, the depositing the secondary thin film comprising: feeding the second reactive gas by spraying one of TMDSO(O(Si(CH purging the second reactive gas by spraying the inert gas through all the spray holes of the shower head; feeding the third reactive gas by spraying one of O purging the third reactive gas by spraying the inert gas is sprayed through all the spray holes of the shower head, the depositing the secondary thin film being performed by repeating the feeding the second reactive gas, the purging the second reactive gas, the feeding the third reactive gas, and the purging the third reactive gas a plurality of (M) times, wherein while a corresponding reactive gas is being sprayed through one of the first spray holes, the second spray holes, and the third spray holes, the inert gas is sprayed through the other two types of spray holes.