摘要:
A method of forming at least one deep trench structure having an increased trench depth is provided. The method includes providing at least one deep trench having sidewalls that extend to a common bottom wall in a surface of a substrate. Each deep trench has initial dimensions that are wider than targeted dimensions for the deep trenches. To reduce the initial dimensions to that of the targeted dimensions, an epitaxial silicon film is formed selectively or non-selectively on at least some portions of the sidewalls using a low-temperature ultra-high vacuum epitaxial silicon growth tehnique.
摘要:
A method of forming at least one deep trench structure having an increased trench depth is provided. The method includes providing at least one deep trench having sidewalls that extend to a common bottom wall in a surface of a substrate. Each deep trench has initial dimensions that are wider than targeted dimensions for the deep trenches. To reduce the initial dimensions to that of the targeted dimensions, an epitaxial silicon film is formed selectively or non-selectively on at least some portions of the sidewalls using a low-temperature ultra-high vacuum epitaxial silicon growth tehnique.
摘要:
The present invention provides methods of producing trench structures having substantially void-free filler material therein. The fillers may be grown from a liner material such as polysilicon formed along the sidewalls of the trench. Previously formed voids may be healed by exposing the voids and growing epitaxial silicon.
摘要:
A “wafer-less” etch chamber cleaning method varies the capacitance applied to radio frequency components of the chuck that is within the etch chamber (varies impedance of the chuck) so as to cause electric field lines within the etch chamber to terminate (bend) away from the chuck. Then the etch chamber can be cleaned using a very aggressive etch chemistry (e.g., NF3) that would otherwise damage the chuck; however, the electric field lines protect the chuck from the etch chemistry. The capacitance is varied according to a pre-established model. Further, the process evaluates the effectiveness of the pre-established model to produce feedback and constantly adjusts the pre-established model to increase the effectiveness of the cleaning process (according to the feedback).
摘要:
An SOI chip having an isolation barrier. The SOI chip includes a substrate, an oxide layer deposited on the substrate, and a silicon layer deposited on the oxide layer. A gate is deposited above the silicon layer. A first metal contact is deposited above the gate to form an electrical contact with the gate. Second and third metal contacts are deposited to form electrical contacts with the silicon layer. The isolation barrier extends through the silicon layer and the oxide layer, and partially into the substrate, to block impurities in the oxide layer outside the isolation barrier from diffusing into the oxide layer inside the isolation barrier. The isolation barrier surrounds the gate, the first metal contact, the second metal contact, and the third metal contact—which define an active chip area inside the isolation barrier. A method of manufacturing the SOI chip is also disclosed.
摘要:
An SOI chip having an isolation barrier. The SOI chip includes a substrate, an oxide layer deposited on the substrate, and a silicon layer deposited on the oxide layer. A gate is deposited above the silicon layer. A first metal contact is deposited above the gate to form an electrical contact with the gate. Second and third metal contacts are deposited to form electrical contacts with the silicon layer. The isolation barrier extends through the silicon layer and the oxide layer, and partially into the substrate, to block impurities in the oxide layer outside the isolation barrier from diffusing into the oxide layer inside the isolation barrier. The isolation barrier surrounds the gate, the first metal contact, the second metal contact, and the third metal contact--which define an active chip area inside the isolation barrier. A method of manufacturing the SOI chip is also disclosed.
摘要:
The present invention provides a method of global stress modification which results in reducing number of dislocations in an epitaxially grown semiconducting device layer on a semiconductor substrate where the device layer and the substrate have a lattice mismatch. The invention teaches a method of imparting a convex curvature to the substrate by removing layer(s) of thin film from or adding layers of thin film to the back side of the substrate, so as to achieve a reduced dislocation density in the device layer.
摘要:
An SOI chip having an isolation barrier. The SOI chip includes a substrate, an oxide layer deposited on the substrate, and a silicon layer deposited on the oxide layer. A gate is deposited above the silicon layer. A first metal contact is deposited above the gate to form an electrical contact with the gate. Second and third metal contacts are deposited to form electrical contacts with the silicon layer. The isolation barrier extends through the silicon layer and the oxide layer, and partially into the substrate, to block impurities in the oxide layer outside the isolation barrier from diffusing into the oxide layer inside the isolation barrier. The isolation barrier surrounds the gate, the first metal contact, the second metal contact, and the third metal contact—which define an active chip area inside the isolation barrier. A method of manufacturing the SOI chip is also disclosed.
摘要:
An SOI chip having an isolation barrier. The SOI chip includes a substrate, an oxide layer deposited on the substrate, and a silicon layer deposited on the oxide layer. A gate is deposited above the silicon layer. A first metal contact is deposited above the gate to form an electrical contact with the gate. Second and third metal contacts are deposited to form electrical contacts with the silicon layer. The isolation barrier extends through the silicon layer and the oxide layer, and partially into the substrate, to block impurities in the oxide layer outside the isolation barrier from diffusing into the oxide layer inside the isolation barrier. The isolation barrier surrounds the gate, the first metal contact, the second metal contact, and the third metal contact—which define an active chip area inside the isolation barrier. A method of manufacturing the SOI chip is also disclosed.
摘要:
A reduced pressure epitaxial deposition method is disclosed to maximize performance and leakage limited yield of devices formed in the epitaxial layer. The method includes specified prebake and deposition conditions designed to minimize arsenic (buried subcollector) and boron (buried isolation) autodoping effects when pressures below one atmosphere are selected in accordance with the subcollector-to-isolation area ratio.