Abstract:
A method of manufacturing a semiconductor device, comprises the following steps of growing a dielectric film made of a dielectric material whose dielectric constant is improved by crystallization thereof, on a semiconductor substrate to utilize the dielectric film as a capacitor film, and applying a voltage to the semiconductor substrate in a plasma atmosphere to increase a grown interface temperature by “dielectric heating” upon growth of the dielectric film
Abstract:
In a process where a capacitor using a BST film for a dielectric film is incorporated into a DRAM, the film is selectively removed by wet etching for forming a contact hole. For this purpose, a bottom electrode is formed and then an amorphous film is formed on the entire surface of a silicon wafer. And after forming a crystalline top electrode on this film, lamp heating is performed to crystallize only the area that is in contact with the electrode. Then wet etching is performed using a solution of hydrogen and ammonium fluoride (1:2), which allows removing only the amorphous area selectively.
Abstract:
In the fabrication of capacitors, a TiO2 film is formed from a TiN film by means of heat-treatment within an atmosphere which does not contain oxygen. This serves to prevent the polysilicon which forms the bottom electrode from being oxidized during heat-treatment. Thus, once the bottom electrode has been formed on the silicon wafer, a TiN film and RuO2 film are formed, and the silicon wafer is heat-treated in an atmosphere which does not contain oxygen. In this manner, a dielectric film that is a TiO2 film and a top electrode that is a ruthenium film are obtained.
Abstract:
A method for manufacturing a semiconductor device by laminating a plurality of ruthenium-type conductive electrodes and a dielectric film having a perovskite structure, includes forming a first conductive electrode at the semiconductor substrate, forming a first area where elements constituting the first conductive electrodes and elements constituting a first dielectric film are melded, forming a transitional layer by performing a heat treatment on the first meld area within a non-oxidizing atmosphere and forming the first dielectric film on the first conductive electrode. Accordingly, a transitional layer having a consistent composition can be formed with a high degree of efficiency at the interface of the ruthenium-type electrode and the dielectric substance having a perovskite structure, so that a capacitor structure employing a very thin dielectric film having a high dielectric constant can be produced with ease and at low cost.
Abstract:
A method of manufacturing a semiconductor device, including forming an opening in an interlevel insulating film disposed on a semiconductor substrate, forming an auxiliary film containing a predetermined metal element, to cover an inner surface of the opening, forming a main film to fill the opening after forming the auxiliary film, the main film containing, as a main component, Cu used as a material of an interconnection main layer, and performing a heat treatment before or after forming the main film, thereby diffusing the predetermined metal element of the auxiliary film onto a surface of the interlevel insulating film facing the auxiliary film, so as to form a barrier film on the interlevel insulating film within the opening, the barrier film containing, as a main component, a compound of the predetermined metal element with a component element of the interlevel insulating film.
Abstract:
A multi-value recording phase-change memory device that can stably record multi-value information, and that can reproduce information with high reliability, comprises a first electrode layer 26, a second electrode layer 28, and a memory layer 30 provided between the first and second electrode layers 26 and 28 and containing a phase-change material layer formed from a phase-change material which is stable in either an amorphous phase or a crystalline phase at room temperature, wherein the memory layer 30 includes a plurality of mutually isolated sub-memory layers 32, 34, 36, and 38 between the first and second electrode layers 26 and 28.
Abstract:
A stacked film has an insulating film containing hafnium formed above a silicon layer and a polysilicon layer formed on the insulating film. The stacked film is heated in an atmosphere containing oxygen and nitrogen and having the total pressure approximately equal to a partial pressure of the nitrogen.
Abstract:
A second printed wiring board is opposed to a surface of the first printed wiring board. A support member supports the first and second printed wiring boards. A first connector is mounted on the first printed wiring board. A second connector is mounted on the second printed wiring board. A wiring connects the first printed wiring board to the second printed wiring board. The first and second connectors are separately mounted on the first and second printed wiring boards, respectively. The sizes of the first and second printed wiring boards can be reduced as compared with the case where connectors are arranged in a row on a single printed wiring board, for example. This results in a reduction in the size of the printed circuit board unit. A large number of the printed circuit board units can be coupled to the back panel.
Abstract:
The Ge channel device comprises: a Ge channel layer (2); a Si-containing interface layer (4) formed on the Ge channel layer (2); a La2O3 layer (6) formed on the interface layer (4); and an electrically conductive layer (8) formed on the La2O3 layer (6). In this device, the Si-containing interface layer (4) functions to suppress the diffusion of Ge atoms into the La2O3 layer (6) and thereby prevents the formation of Ge oxide in the La2O3 layer (6); accordingly, a Ge channel device whose C-V characteristic exhibits only a small hysteresis can be achieved.
Abstract translation:Ge沟道器件包括:Ge沟道层(2); 形成在所述Ge沟道层(2)上的含Si界面层(4); 在所述界面层(4)上形成的La 2 O 3层(6); 和形成在La 2 O 3层(6)上的导电层(8)。 在该器件中,含Si界面层(4)用于抑制Ge原子扩散到La2O3层(6)中,从而防止La2O3层(6)中Ge氧化物的形成; 因此,可以实现其C-V特性仅具有小滞后的Ge通道器件。
Abstract:
A method of manufacturing a semiconductor device, including forming an opening in an interlevel insulating film disposed on a semiconductor substrate, forming an auxiliary film containing a predetermined metal element, to cover an inner surface of the opening, forming a main film to fill the opening after forming the auxiliary film, the main film containing, as a main component, Cu used as a material of an interconnection main layer, and performing a heat treatment before or after forming the main film, thereby diffusing the predetermined metal element of the auxiliary film onto a surface of the interlevel insulating film facing the auxiliary film, so as to form a barrier film on the interlevel insulating film within the opening, the barrier film containing, as a main component, a compound of the predetermined metal element with a component element of the interlevel insulating film.