Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9812985 | Thin Solid Films | 2005 | 5 Pages |
Abstract
This study focuses on the structures and the crystallographic orientations of copper electrodeposits in trench patterns by the electron backscattered diffraction (EBSD) technique. The EBSD measurement was made on the surface of annealed deposits before and after removal of their over-plated layers by chemical mechanical polishing (CMP) and also on the section normal to trench lines. The textures of the annealed deposit with and without the over-plated layer are almost same. The major and minor orientation components in the annealing textures of trench specimens were approximated by {111}ã110ã and its twin components, {115}ã110ã and {115}ã141ã, respectively. Here {hkl}ãuvwã indicates that {hkl} is the crystallographic planes parallel to the trench base plane and ãuvwã is the crystallographic directions parallel to the trench line direction. By measuring the line-normal sectional EBSD analysis, the copper electrodeposit in a trench plug is figured as a single crystal having a few of twinning, and hence the over-plated layer has almost the same texture as the trench plug. Therefore, the texture of trench plugs can be inferred by that of the over-plated layer.
Related Topics
Physical Sciences and Engineering
Materials Science
Nanotechnology
Authors
Hyo-Jong Lee, Dong Ik Kim, Jeong Hun Ahn, Dong Nyung Lee,