摘要:
A ferroelectric memory device is fabricated while mitigating edge degradation. A bottom electrode is formed over one or more semiconductor layers. A ferroelectric layer is formed over the bottom electrode. A top electrode is formed over the ferroelectric layer. The top electrode, the ferroelectric layer, and the bottom electrode are patterned or etched. A dry clean is performed that mitigates edge degradation. A wet etch/clean is then performed.
摘要:
The present invention provides a method for etching a substrate, a method for forming an integrated circuit, an integrated circuit formed using the method, and an integrated circuit. The method for etching a substrate includes, among other steps, providing a substrate 140 having an aluminum oxide etch stop layer 130 located thereunder, and then etching an opening 150, 155, in the substrate 140 using an etchant comprising carbon oxide, a fluorocarbon, an etch rate modulator, and an inert carrier gas, wherein a flow rate of the carbon oxide is greater than about 80 sccm and the etchant is selective to the aluminum oxide etch stop layer 130. The aluminum oxide etch stop layer may also be used in the back-end of advanced CMOS processes as a via etch stop layer.
摘要:
A ferroelectric memory capacitor is formed by forming a barrier layer, a first metal layer, a ferroelectric layer, a second metal layer, and a hard mask layer, on dielectric layer (70). Using the patterned hard mask layer (255), the layers are etched to form an etched barrier layer (205), and etched first metal layer (215), and etched ferroelectric layer (225), and etched second metal layers (235, 245). The etched layers form a ferroelectric memory capacitor (270) with sidewalls that form an angle with the plane of the upper surface of the dielectric layer (70) between 78° and 88°. The processes used to etch the layers are plasma processes performed at temperatures between 200° C. and 500° C.
摘要:
An optocoupler structure comprising a semiconductor chip having an integrated circuit and an optically transparent, electrically insulating layer having first and second surfaces; an organic diode integral with said first surface, said diode operable to emit electromagnetic radiation; and said circuit including a radiation-sensitive semiconductor device integral with said second surface, electrically isolated from said diode, and positioned in the path of said radiation.
摘要:
A molecular beam epitaxy (MBE) system (10) is provided to grow thin film, epitaxy layers (44, 46, 48, 50) on compound semiconductor substrates (40). A mass spectrometer detector (95) is used to monitor and control the flux from selected sources (21, 23, 25, 27) within the MBE system (10). A uniform layer of indium gallium arsenide (46, 50) may be grown on a semiconductor substrate (40) by controlling the indium flux with respect to substrate (40) temperature and time. An epitaxy layer (46) of indium gallium arsenide with uniform mole fraction concentration and reduced lattice strain is produced.
摘要:
A molecular beam epitaxy (MBE) system (10) is provided to grow thin film, epitaxy layers (44, 46, 48, 50) on compound semiconductor substrates (40). A mass spectrometer detector (95) is used to monitor and control the flux from selected sources (21, 23, 25, 27) within the MBE system (10). A uniform layer of indium gallium arsenide (46, 50) may be grown on a semiconductor substrate (40) by controlling the indium flux with respect to substrate (40) temperature and time. An epitaxy layer (46) of indium gallium arsenide with uniform mole fraction concentration and reduced lattice strain is produced.
摘要:
A molecular beam epitaxy (MBE) system (10) is provided to grow thin film, epitaxy layers (44, 46, 48, 50) on compound semiconductor substrates (40). A mass spectrometer detector (95) is used to monitor and control the flux from selected sources (21, 23, 25, 27) within the MBE system (10). A uniform layer of indium gallium arsenide (46, 50) may be grown on a semiconductor substrate (40) by controlling the indium flux with respect to substrate (40) temperature and time. An epitaxy layer (46) of indium gallium arsenide with uniform mole fraction concentration and reduced lattice strain is produced.