摘要:
A semiconductor device and a fabrication method are provided. The fabrication method includes providing a base substrate (300) including a first region (I) for forming a first transistor and a second region (II) for forming a second transistor, the first transistor having a working current less than the second transistor. The fabrication method further includes forming a gate electrode layer on the base substrate; etching the gate electrode layer to form a first gate electrode (231) in the first region; after forming the first gate electrode, etching the gate electrode layer to form a second gate electrode (232) in the second region, with the second gate electrode (232) having an undercut structure; forming a first source/drain doped region in the base substrate on both sides of the first gate electrode and forming a second source/drain region in the base substrate on both sides of the second gate electrode.
摘要:
A system and method for planarizing a patterned semiconductor substrate includes receiving a patterned semiconductor substrate. The patterned semiconductor substrate having a conductive interconnect material filling multiple of features in the pattern. The conductive interconnect material having an overburden portion. The overburden portion includes a localized non-uniformity. An additional layer is formed an the overburden portion. The additional layer and the overburden portion are planarized. The planarizing process substantially entirely removes the additional layer.
摘要:
Method for removing and/or redistributing material in the trenches and/or vias of integrated circuit interconnect structures by a gas cluster ion beam (GCIB) (128) is described to improve the fabrication process and quality of metal (304) interconnects in an integrated circuit. The process entails opening up an undesired 'necked in' region at the entrance to the structure, re-depositing the barrier metal (308) from thicker areas such as the neck or bottom of the structure to the side walls and/or removing some of the excess and undesired material on the bottom of the structure by sputtering. The GCIB process may be applied after the barrier metal deposition and before the copper seed layer (310) / copper (312) electroplating or the process may be applied after the formation of the copper seed layer (310) and before electroplating. The method may extend the usability of the known interconnect deposition technologies to next generation integrated circuits and beyond.
摘要:
There is disclosed a method of treating a substrate material or a film present on the material surface comprising cyclically performing the following steps: (a) etching the material or film; (b) depositing or forming a passivation layer on the surfaces of an etched feature; and (c) selectively removing the passivation layer from the etched feature in order that the etching proceeds in a direction substantially perpendicular to the material or film surface. At least one of the steps (a) or (b) is performed in the absence of a plasma. Also disclosed is an apparatus for performing the method.
摘要:
A process of treating a substrate having photoresist applied thereto, comprising the steps of: (a) removing said photoresist from said substrate by a method selected from the group consisting of photoresist stripping, plasma etch residue cleaning, or a combination thereof; and (b) rinsing said substrate with a non-corrosive rinsing composition comprising: (1) water; and (2) one or more water-soluble corrosion inhibitors selected from the group consisting essentially of hydroxylamine, at least one hydroxylammonium salt, at least one water-soluble organic acid, at least one amino acid, and combinations thereof.
摘要:
The present invention relates to a method for roughening a surface of a semiconductor substrate (1) comprising the steps of arranging the semiconductor substrate (1) in a furnace, providing a gas mixture comprising an inert gas and a halogen or a halogen-hydrogen compound in the furnace and providing a temperature between 700 and 1200°C in the furnace. The inventive method is capable of roughening the surface of a semiconductor substrate resulting in an increased capacitor area with an increased capacity.
摘要:
Die Erfindung betrifft ein Verfahren zur Herstellung dotierter Polysiliciumschichten und -schichtstrukturen sowie ein Verfahren zum Strukturieren derartiger Schichten und Schichtstrukturen, welche Polysilicumschichten umfassen. Das Dotierverfahren zeichnet sich dadurch aus, daß die Dotierverbindung als Prozeßgas bei der chemischen Gasphasenabscheidung des Polysiliciums zugesetzt wird, deren Zufuhr zum Prozeßgas jedoch gegen Ende der Gasphasenabscheidung gestoppt wird, so daß eine Grenzschicht aus undotiertem Silicium abgeschieden wird. Hierdurch wird eine günstige Oberflächenbeschaffenheit und bessere Haftfähigkeit zu einer Nachbarschicht erreicht. Das Strukturierungsverfahren umfaßt einen wenigstens dreistufigen Ätzprozeß, bei welchem in einer ersten Stufe ein fluorhaltiges Gas, in einer zweiten Stufe ein chlorhaltiges Gas und in einer dritten Stufe ein bromhaltiges Gas zum Ätzen verwendet wird. Die Erfindung betrifft weiterhin Wafer und Halbleiterchips, die unter Verwendung des Dotierverfahrens und/oder des Strukturierungsverfahrens hergestellt wurden.