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J. Micromech. Microeng. 19 (2009) 065011 "Fabrication of high aspect ratio through-wafer copper interconnects by reverse pulse electroplating" Abstract This study aims to fabricate high aspect ratio through-wafer copper interconnects by a simple reverse pulse electroplating technique. High aspect-ratio (∼18) through-wafer holes obtained by a two-step deep reactive ion etching (DRIE) process exhibit a taper profile, which might automatically optimize the local current density distribution during the electroplating process, thereby achieving void-free high aspect-ratio copper vias. ±¾ÎIJÉÓÃÂö³å³Á»ý·½·¨,ÔÚÉî¿í±ÈµÄ¹èͨ¿×ÖÐÖÆ±¸Í»¥Á¬½ÓÏß.Èýά¹è²ãµþ¼¼ÊõĿǰÊǰ뵼Ìåµç×Ó·â×°ÁìÓòµÄÈÈÃÅ»°Ìâ.Ï£Íû±¾ÎĵÄÑо¿¶Ô´ÓÊÂÕâ·½ÃæÑо¿µÄ³æÓÑÃÇÓаïÖú. ´ËÎÄĿǰһ¸öÔÂÄÚ¿ÉÒÔÃâ·ÑÏÂÔØ: http://www.iop.org/EJ/abstract/0960-1317/19/6/065011/ |
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