公开(公告)号：US07102235B2

公开(公告)日：2006-09-05

申请号：US10737315

申请日：2003-12-15

申请人： Ivo Raaijmakers ,  Suvi P. Haukka ,  Yille A. Saanila ,  Pekka J. Soininen ,  Kai-Erik Elers ,  Ernst H. A. Granneman

发明人： Ivo Raaijmakers ,  Suvi P. Haukka ,  Yille A. Saanila ,  Pekka J. Soininen ,  Kai-Erik Elers ,  Ernst H. A. Granneman

IPC分类号： H01L23/52

CPC分类号： C23C16/45525 ,  C23C16/0272 ,  C23C16/045 ,  C23C16/08 ,  C23C16/14 ,  C23C16/32 ,  C23C16/34 ,  C23C16/44 ,  C23C16/45534 ,  C23C16/45536 ,  C30B25/02 ,  C30B29/02 ,  C30B29/36 ,  H01L21/28562 ,  H01L21/7681 ,  H01L21/76814 ,  H01L21/76843 ,  H01L21/76846 ,  H01L21/76873 ,  H01L23/5226 ,  H01L23/53223 ,  H01L23/53238 ,  H01L23/53242 ,  H01L23/53252 ,  H01L23/5329 ,  H01L23/53295 ,  H01L2924/0002 ,  H01L2924/00

摘要： Method and structures are provided for conformal lining of dual damascene structures in integrated circuits. Trenches and contact vias are formed in insulating layers. The trenches and vias are exposed to alternating chemistries to form monolayers of a desired lining material. Exemplary process flows include alternately pulsed metal halide and ammonia gases injected into a constant carrier flow. Self-terminated metal layers are thus reacted with nitrogen. Near perfect step coverage allows minimal thickness for a diffusion barrier function, thereby maximizing the volume of a subsequent filling metal for any given trench and via dimensions.

摘要翻译： 提供了集成电路中双镶嵌结构的保形衬里的方法和结构。 沟槽和接触通孔形成在绝缘层中。 沟槽和通孔暴露于交替的化学物质以形成所需衬里材料的单层。 示例性工艺流程包括交替脉冲的金属卤化物和注入恒定载流子的氨气。 自身端接的金属层因此与氮气反应。 接近完美的台阶覆盖允许扩散阻挡功能的最小厚度，从而使任何给定沟槽和通孔尺寸的后续填充金属的体积最大化。