Method of Wet Etching and Method of Fabricating Semiconductor Device Using the Same

Disclosed are a method of wet etching and a method of fabricating a semiconductor device. The wet etching method includes providing a wafer in a process bath in which an etchant is accommodated, supplying the process bath with a primary etchant to control a concentration of a specific material in th...

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Hauptverfasser: KWANGSU KIM, KYUNGHYUN KIM, CHANGSUP MUN, SUNJOONG SONG, YONGSUN KO, SE-HO CHA, KEONYOUNG KIM, HOON HAN, JINWOO LEE, CHOONGKEE SEONG
Format: Patent
Sprache:chi ; eng
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Zusammenfassung:Disclosed are a method of wet etching and a method of fabricating a semiconductor device. The wet etching method includes providing a wafer in a process bath in which an etchant is accommodated, supplying the process bath with a primary etchant to control a concentration of a specific material in the etchant, supplying the process bath with a first additive to increase the concentration of the specific material in the etchant, and supplying the process bath with a second additive to suppress a defect caused by an increase in the concentration of the specific material in the etchant. The etchant includes at least one, of the primary etchant, the first additive, and the second additive. The first additive and the second additive are separately supplied to the process bath, 公开了湿蚀刻方法和制造半导体装置的方法。湿蚀刻方法包括:在工艺槽中提供晶圆,工艺槽在其中容纳蚀刻剂;向工艺槽供应主要蚀刻剂以控制蚀刻剂中的特定材料的浓度;向工艺槽供应第添加剂以增大蚀刻剂中的特定材料的浓度;以及向工艺槽供应第二添加剂以抑制由蚀刻剂中的特定材料的浓度的增大而导致的缺陷。蚀刻剂包括主要蚀刻剂、第添加剂和第二添加剂中的至少种。将第添加剂和第二添加剂分开地供应到工艺槽。