摘要:
Adhesion of dielectric layer stacks to be formed after completing the basic configuration of transistor elements may be increased by avoiding the formation of a metal silicide in the edge region of the substrate. For this purpose, a dielectric protection layer may be selectively formed in the edge region prior to a corresponding pre-clean process or immediately prior to deposition of the refractory metal. Hence, non-reacted metal may be efficiently removed from the edge region without creating a non-desired metal silicide. Hence, the further processing may be continued on the basis of enhanced process conditions for forming interlayer dielectric materials.
摘要:
Adhesion of dielectric layer stacks to be formed after completing the basic configuration of transistor elements may be increased by avoiding the formation of a metal silicide in the edge region of the substrate. For this purpose, a dielectric protection layer may be selectively formed in the edge region prior to a corresponding pre-clean process or immediately prior to deposition of the refractory metal. Hence, non-reacted metal may be efficiently removed from the edge region without creating a non-desired metal silicide. Hence, the further processing may be continued on the basis of enhanced process conditions for forming interlayer dielectric materials.
摘要:
A method for treating a semiconductor device includes dissolving an inert gas species in a wet chemical cleaning solution and treating a material layer of a semiconductor device with the wet chemical cleaning solution in ambient atmosphere. The inert gas species is oversaturated in the wet chemical cleaning solution in the ambient atmosphere.
摘要:
Electromigration behavior in complex metallization systems of semiconductor devices may be enhanced at critical areas between a metal line and a via by locally forming a copper/silicon compound. In some illustrative embodiments, the formation of the copper/silicon compound may be combined with other treatments for cleaning the exposed surface areas and/or modifying the molecular structure thereof.
摘要:
During the formation of a complex metallization system, the influence of a manufacturing environment on sensitive barrier/seed material systems may be monitored or controlled by using an appropriate test pattern and applying an appropriate test strategy. For example, actual probe and reference substrates may be prepared and may be processed with and without exposure to the manufacturing environment of interest, thereby enabling an efficient evaluation of one or more parameters of the environment. Furthermore, an “optimized” manufacturing environment may be obtained on the basis of the test strategy disclosed herein.
摘要:
Electromigration behavior in complex metallization systems of semiconductor devices may be enhanced at critical areas between a metal line and a via by locally forming a copper/silicon compound. In some illustrative embodiments, the formation of the copper/silicon compound may be combined with other treatments for cleaning the exposed surface areas and/or modifying the molecular structure thereof.
摘要:
By forming an alloy in a highly localized manner at a transition or contact area between a via and a metal line, the probability of forming an electromigration-induced shallow void may be significantly reduced, while not unduly affecting the overall electrical resistivity of the metal line. In one illustrative embodiment, an electroless deposition process may provide the alloy-forming species on the exposed metal region on the basis of an electroless plating process.
摘要:
During the formation of a complex metallization system, the influence of a manufacturing environment on sensitive barrier/seed material systems may be monitored or controlled by using an appropriate test pattern and applying an appropriate test strategy. For example, actual probe and reference substrates may be prepared and may be processed with and without exposure to the manufacturing environment of interest, thereby enabling an efficient evaluation of one or more parameters of the environment. Furthermore, an “optimized” manufacturing environment may be obtained on the basis of the test strategy disclosed herein.
摘要:
By providing a test structure for electromigration tests in semiconductor devices, which may indicate the status of a barrier layer at the bottom of a test via in the structure, a significantly increased reliability of respective electromigration tests may be obtained. Furthermore, the degree of porosity of the barrier layer may be estimated on the basis of the resulting test structure, which comprises a feed line having an increased probability for void formation compared to the test via, when a specific degree of porosity is created in the test via.
摘要:
A semiconductor structure comprises a semiconductor substrate. A layer of an electrically insulating material is formed over the semiconductor substrate. An electrically conductive feature is formed in the layer of electrically insulating material. A first layer of a semiconductor material is formed between the electrically conductive feature and the layer of electrically insulating material.