Abstract:
A LOW PARASITIC CAPACITANCE FIELD EFFECT TRANSISTOR IS FABRICATED BY THE UTILIZATION OF A SELF-ALIGNING GATE TECHNIQUE. A METAL GATE IS FORMED AND THEN, EMPLOYING THE GATE AS A MASK, LOW TEMPERATURE SCHOTTKY BARRIER SOURCE AND DRAIN JUNCTIONS ARE FORMED. THE TECHNIQUE IS PARTICULARLY USEFUL IN THE FABRICATION OF THE FIELD EFFECT TRNASISTOR AS AN ELEMENT OF A LARGE INTEGRATED CIRCUIT WHERE MANY SUCH ALIGNMENTS MUST BE MADE SIMULTANTEOUSLY.
Abstract:
An insulated gate field effect transistor inverter and method of fabrication is disclosed. The invention comprises two field effect transistors integrated on a semiconductor substrate. The configuration has a common source and is thus compatible with integrated circuit fabrication processes. The channel length of one of the two field effect transistors is made extremely small utilizing the method of the invention, enabling significant reduction in size of the inverter. In accordance with this method the channel length is determined by the distance between two accurately controlled diffusions, rather than conventional photolithographic techniques.
Abstract:
Disclosed are methods for depositing multilayer ohmic contacts upon a substrate of semiconductor material disposed within a low pressure chamber; such including for example the particular features of upward sputtering of the various metal films, simultaneous sputtering of platinum with gold utilizing a sputtering cathode composed of platinum and gold, and adding hydrogen into an inert sputtering atmosphere to eliminate undesirable formation of oxides. This invention provides improved adhesion of the sputtered metal films to the semiconductor surface and the silicon oxide, and provides the formation of the metal film which is substantially free of pin holes and which has substantially uniform resistivity.
Abstract:
Disclosed is a tungsten-modifying metal ohmic contact and electrical interconnection system for semiconductor devices that are subjected to corrosive environments. A contact and interconnection system is formed using a layer composed of a mixture of tungsten and a modifier metal, such as titanium, the system having the desired characteristics of the tungsten system but with greatly increased corrosion resistance which allows devices using such a system to be mounted in nonhermetic packages.
Abstract:
Disclosed is a molybdenum-modifying metal ohmic contact and electrical interconnection system for semiconductor devices that are subjected to corrosive environments. A contact and interconnection system is formed using a layer composed of a mixture of molybdenum and a modifier metal, such as titanium, the system having the desired characteristics of the molybdenum system but with greatly increased corrosion resistance which allows devices using such a system to be mounted in nonhermetic packages.