한국반도체및디스플레이장비학회:학술대회논문집 (Proceedings of the Korean Society Of Semiconductor Equipment Technology)
- 한국반도체및디스플레이장비학회 2004년도 춘계학술대회 발표 논문집
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- Pages.92-96
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- 2004
반도체 장비 부품의 Ti/TiN 흡착물 세정 공정 연구
초록
Scales, accumulated on semiconductor equipment parts during device fabrication processes, often lower equipment lifetime and production yields. Thus, many equipments parts have be cleaned regularly. In this study, an attempt to establish an effective process for the removal of scales on the sidewall of collimators in the chamber of sputter is made. The EDX analysis revealed that the scales are composed of Ti and TiN with the colummar structure. It was found that the heat-treatment at 700 for 1 min. after the oxide removal in the HF solution, and then etching in the HNO3 : H2SO4 : H2O =4:2:4 solution for 5.5 hrs at 67 was the most effective process for the scale removal.
키워드