摘要:
A process for preparing an oxidation resistant, electrically conductive copper layer on a substrate, and copper layers so formed, are disclosed. A copper layer is deposited onto the surface of a substrate, and subsequently annealed. The copper layer includes magnesium in an amount sufficient to form an inert magnesium oxide layer at the surface of the copper layer upon annealing.
摘要:
A copper conductor is formed which is included as a component in microelectronic devices. The conductor is formed by forming a metal layer on the surface of a microelectronic substrate, forming a copper layer on the metal layer, and annealing the metal and copper layers. The annealing step diffuses at least some of the metal layer through the copper layer to the surface thereof where the diffused metal forms a protective metal oxide at the surface of the copper layer. As a result, the metal oxide layer passivates the copper layer.
摘要:
A copper conductor is formed which is included as a component in microelectronic devices. The conductor is formed by forming a metal layer on the surface of a microelectronic substrate, forming a copper layer on the metal layer, and annealing the metal and copper layers. The annealing step diffuses at least some of the metal layer through the copper layer to the surface thereof where the diffused metal forms a protective metal oxide at the surface of the copper layer. As a result, the metal oxide layer passivates the copper layer.
摘要:
A process for preparing an oxidation resistant, electrically conductive copper layer on a substrate, and copper layers so formed, are disclosed. A copper layer is deposited onto the surface of a substrate, and subsequently annealed. The copper layer includes magnesium in an amount sufficient to form an inert magnesium oxide layer at the surface of the copper layer upon annealing.
摘要:
Surface contamination of silicon wafers is detected by a combined beam-deflecting magnet and magnetic spectrometer system. Heavy ions are directed onto the surface of a silicon wafer through the beam-deflecting magnet, and ions back-scattered from contaminants in the surface of the wafer pass through the magnetic spectrometer onto a focal-plane detector. One or more Einzel lenses prevent ions back-scattered from the silicon in the wafer from reaching the detector.