摘要:
A method for making a semiconductor device includes the steps of forming a first conductive layer adjacent a substrate, forming an etch stop layer on the conductive layer, and forming a dielectric layer on the etch stop layer. The dielectric layer includes a material having a low dielectric constant, and a via is formed through the dielectric layer to expose the etch stop layer at the bottom, with porous sidewalls being produced. The exposed etch stop layer is etched using an etchant that cooperates with etched material from the etch stop layer to form a polymeric layer to coat the porous sidewalls of the via. Since the etchant cooperates with the etched material from the etch stop layer to form the polymeric layer coating the porous sidewalls of the via, a separate coating layer deposition step is not required after the via is etched and cleaned. After the porous sidewalls have been coated and polymeric material has been etched from the bottom of the via, a barrier metal layer is formed on the polymeric layer, a seed layer is formed on the barrier metal layer, and a second conductive layer is formed on the seed layer contacting the first conductive layer in the via.
摘要:
An unwanted tungsten film deposit on a Chemical Vapor Deposition chamber is cleaned by adding a mixture of at least two cleaning gases into the chamber at a predetermined temperature and pressure and in contact with said chamber walls for a sufficient length of time. The cleaning gases and reacted tungsten species are removed from the chamber by vacuum, and unreacted cleaning gases are removed by purging the chamber with an inert gas. At least one cleaning gas is selected from the group consisting of bromomethane, dibromomethane, bromoform and mixtures thereof. The temperature of the chamber is preferably at least about 300 degrees Celsius. The cleaning gases in the chamber are at a pressure in the range from about 100 to 200 Torr and the chamber is purged at a pressure in the range from about 200 to 500 Torr.
摘要:
A method for dry etching a material deposited on semiconductor device is performed by chemically reacting the material with an etchant gas. The etching process is conducted in a reaction chamber at a predetermined temperature and predetermined pressure within the reaction chamber and without the need of generating a plasma within the chamber or applying an electrical bias to the semiconductor device. A sufficient amount of gas is introduced into the reaction chamber to selectively remove the material from the semiconductor device.
摘要:
A patterned film structure within a semiconductor device includes a pattern formed within a hardmask film, and a pattern formed within an underlying semiconductor or metal film beneath the hardmask film. The etch bias of both isolated and nested features formed within the patterned structure, is substantially the same with respect to a masking film formed over the hardmask film.
摘要:
A process for forming a patterned film structure within a semiconductor device. The process sequentially forms a pattern within a hardmask film and than within a semiconductor or other film formed beneath the hardmask film. The etch bias of both isolated and nested features formed within the films, is substantially the same with respect to a masking film formed over the hardmask film. The process includes a hardmask film etching sequence including an argon treatment step and a hardmask film etching step which is resistant to localized etching effects and includes O2 and C2F6 as etchant gasses.
摘要翻译:一种用于在半导体器件内形成图案化膜结构的工艺。 该过程在硬掩模膜内依次形成图案,而不是形成在硬掩膜下方的半导体或其它膜内。 在膜内形成的隔离和嵌套特征的蚀刻偏压对于在硬掩模膜上形成的掩模膜基本相同。 该方法包括硬掩模膜蚀刻序列,其包括氩处理步骤和耐局部蚀刻效应的硬掩模膜蚀刻步骤,并且包括作为蚀刻剂气体的O 2和C 2 F 6。
摘要:
A method of forming a buried conductive structure in a semiconductor device includes the steps of forming a first insulating layer on a semiconductor layer; forming a sacrificial structure on at least a portion of the first insulating layer; forming a second insulating layer on at least a portion of the sacrificial structure; forming at least one opening through the second insulating layer to at least partially expose the sacrificial structure; substantially removing the sacrificial structure, leaving a cavity; and substantially filling the cavity and the at least one opening with a conductive material. The sacrificial structure may be substantially removed by etching the sacrificial structure using an isotropic etchant.
摘要:
An improved method of capacitor formation is disclosed. A dielectric is etched with an etch recipe which creates grooves within an opening. The opening is filled with metal which conforms to the grooves, thereby creating a capacitor's lower plate with increased surface area. The metal is later surrounded with dielectric and metal, which forms respectively the capacitor's dielectric and upper plate.
摘要:
A channel diode structure having a drift region and method of forming. A charge balanced channel diode structure having an electrode shield and method of forming.
摘要:
A gas plasma process without argon sputtering for removing photoresist, etch residues and other contaminants involved in etching vias in integrated circuit devices is disclosed. The process involves placing the substrate having etched vias or contact holes in a suitable low bias reactor; applying to the substrate surface a mixture of gases at low bias selected from the group consisting of oxygen, nitrogen, fluorine, hydrofluorocarbon and fluorinated methane and amine gases to both remove the photoresist layer and alter the composition of the residues such that the residues are soluble in water; and rinsing the substrate with deionized water. The plasma process should be carried out at temperatures of less than about 100 degrees C. to avoid mobile ion contamination problems and oxidation of the etch residues.
摘要:
A high performance, power integrated circuit composed of two charge balanced, extended drain NMOS transistors (CBDEMOS) formed on an n-substrate. A CBDENMOS transistor with an n-type substrate source. A charge balanced channel diode (CBCD) with an n-type substrate. A process for forming a high performance, power integrated circuit composed of two CBDENMOS transistors formed on an n-substrate. A process for forming a power integrated circuit composed of one CBDENMOS transistor and one CBCD on an n-type substrate.