摘要:
A method for fabricating a capacitor for an integrated circuit, comprising the steps of forming a titanium film for an adhesion layer over a substrate, forming a titanium dioxide film for a diffusion barrier layer by annealing the titanium film after ion-implantation of oxygen ion into a surface region of the titanium film so as to change titanium in the surface region to titanium dioxide, and forming a high dielectric constant capacitor on the titanium dioxide film.
摘要:
A semiconductor device forming a capacitor through an interlayer insulating layer on a semiconductor substrate on which an integrated circuit is formed. This semiconductor device has an interlayer insulating layer with moisture content of 0.5 g/cm.sup.3 or less, which covers the capacitor in one aspect, and has a passivation layer with hydrogen content of 10.sup.21 atoms/cm.sup.3 or less, which covers the interconnections of the capacitor in other aspect. By thus constituting, deterioration of the capacitor dielectric can be prevented which brings about the electrical reliability of the ferroelectric layer or high dielectric layer.
摘要翻译:一种通过半导体衬底上的层间绝缘层形成电容器的半导体器件,其上形成集成电路。 该半导体装置具有含水量为0.5g / cm 3以下的层间绝缘层,其在一个方面覆盖电容器,并且具有氢含量为1021原子/ cm3以下的钝化层,其覆盖电容器的互连 在其他方面。 通过这样构成,可以防止导致铁电层或高介电层的电可靠性的电容器电介质的劣化。
摘要:
A method of forming a Bi-layered ferroelectric thin film on a substrate with good reproducibility, using a mixed composition of a Bi-containing organic compound and a metal polyalkoxide compound by at least one technique selected from the group consisting of molecular deposition such as CVD, and spincoat-sintering.
摘要:
A semiconductor device comprises silicon substrate 1 on which an integrated circuit is formed, first insulating layer 6 formed on silicon substrate 1, a capacitor comprising lower electrode 7 formed on first insulating layer 6, dielectric film 8 having a high dielectric constant and upper electrode 9, a second insulating film 11 having contact holes 13 which lead to lower electrode 7 and upper electrode 9 independently, diffusion barrier layer 17 which touches lower electrode 7 and upper electrode 9 at bottom of contact holes 13, and interconnection layer 15 formed on diffusion barrier layer 17. In diffusion barrier layer 17 at the bottom of contact hole 13, a lamellar region made of granular crystal is formed.
摘要:
A manufacturing method of a semiconductor device comprises the steps:(a) forming a ferroelectric capacitor on a semiconductor substrate on which a MOS transistor is formed, (b) forming an interlayer insulating film which covers the whole semiconductor substrate, (c) forming first contact holes which reach diffusion layers of the MOS transistor, (d) after forming the first contact holes, providing a heat treatment in hydrogen atmosphere, (e) after the heat treatment, forming second contact holes which reach upper and lower electrodes of the ferroelectric capacitor on the interlayer insulating film, and (f) forming metal interconnection. Since the heat treatment in hydrogen atmosphere is provided before forming the second contact holes, a surface state density at interface between the semiconductor and a gate insulating film of the MOS transistor can be lowered without degrading the characteristics of ferroelectric capacitor.
摘要:
In a method for fabricating a brazed aluminum fin heat exchanger comprising a pair of brazing sheets each consisting of a core sheet and a cladding of brazing material disposed on either side of said core sheet and a corrugated fin interposed between the brazing sheets and brazed thereto, an improved process comprises making at least the fin of a heat-treatable (age-hardenable) aluminum alloy in the Al-Mg-Si system containing 0.15 to 0.4% copper, assembling the fin with said brazing sheets into a brazed aluminum fin heat exchanger unit, maintaining the heat exchanger unit at a temperature between 500.degree. C. and 570.degree. C. for a time from 30 minutes to 4 hours, quenching the solution-treated unit to room temperature under cooling conditions which provide a cooling rate between 2.8.degree. C./min. and 50.degree. C./min. down to 200.degree. C. and thereafter, age-hardening the quenched heat exchanger unit. The above heat-treatable aluminum alloy in the Al-Mg-Si system is AA 6951 or AA 6061.
摘要:
Disclosed is a memory device provided with a plurality of memory cells and a lead-out line (12) shared among the memory cells. Each memory cell is provided with a transistor (6) formed above a substrate (1) and a variable resistance element (10) having a lower electrode (7), an upper electrode (9) that comprises a noble metal, and a variable resistance layer (8) disposed between the lower electrode (7) and the upper electrode (9). The resistance value of the variable resistance layer (8) changes reversibly in response to electric pulses that go through the transistor (6) and are applied between the lower electrode (7) and the upper electrode (9). The lead-out line (12) is in direct contact with the upper electrodes (9) of the memory cells.
摘要:
A nonvolatile memory element includes a first electrode (103) formed on a substrate (101), a resistance variable layer (108) and a second electrode (107), wherein the resistance variable layer has a multi-layer structure including at least three layers which are a first transition metal oxide layer (104), a second transition metal oxide layer (106) which is higher in oxygen concentration than the first transition metal oxide layer (104), and a transition metal oxynitride layer (105). The second transition metal oxide layer (106) is in contact with either one of the first electrode (103) and the second electrode (107). The transition metal oxynitride layer (105) is provided between the first transition metal oxide layer (104) and the second transition metal oxide layer (106).
摘要:
A method of manufacturing a memory cell array in which first conductive layers (2) and second conductive layers (14) extend above a semiconductor substrate (1) and three-dimensionally cross with each other, and memory cells each of which includes a current steering element (10) and a variable resistance element (23) electrically connected in series to each other is provided at a corresponding one of three-dimensional cross points between the first conductive layers (2) and the second conductive layers (14). The method includes: forming a first interlayer insulating film (3); forming a contact hole in the interlayer insulating film (3); depositing a first plug material (4) in the contact hole and on the first interlayer insulating film (3); performing a first polishing in which the first plug material (4) is polished until the first interlayer insulating film (3) is exposed; depositing a conductive film (6a) that becomes a first electrode (6) of the current steering element (10), on the first plug material (4) and the first interlayer insulating film (3) after the first polishing; and performing a second polishing in which a surface of the conductive film (6a) is polished.
摘要:
A method of manufacturing a memory cell array in which first conductive layers (2) and second conductive layers (14) extend above a semiconductor substrate (1) and three-dimensionally cross with each other, and memory cells each of which includes a current steering element (10) and a variable resistance element (23) electrically connected in series to each other is provided at a corresponding one of three-dimensional cross points between the first conductive layers (2) and the second conductive layers (14). The method includes: forming a first interlayer insulating film (3); forming a contact hole in the interlayer insulating film (3); depositing a first plug material (4) in the contact hole and on the first interlayer insulating film (3); performing a first polishing in which the first plug material (4) is polished until the first interlayer insulating film (3) is exposed; depositing a conductive film (6a) that becomes a first electrode (6) of the current steering element (10), on the first plug material (4) and the first interlayer insulating film (3) after the first polishing; and performing a second polishing in which a surface of the conductive film (6a) is polished.