Abstract:
Parasitic deposits are controlled in a deposition system (100) for depositing a film on a substrate (20), the deposition system of the type defining a reaction chamber for receiving the substrate and including a process gas (P) in the reaction chamber and an interior surface contiguous with the reaction chamber. Such control is provided by flowing a buffer gas (B) between the interior surface and at least a portion of the process gas to form a gas barrier layer such that the gas barrier layer inhibits contact between the interior surface and components of the process gas.
Abstract:
A bipolar device (30) has at least one p-type layer (34) of single crystal silicon carbide and at least one n-type layer (33) of single crystal silicon carbide, wherein those portions of those stacking faults (40) that grow under forward operation are segregated from at least one of the interfaces between the active region and the remainder of the device.
Abstract:
Methods of forming high voltage silicon carbide power devices utilize high purity silicon carbide drift layers that are derived from high purity silicon carbide wafer material, instead of prohibitively costly epitaxially grown silicon carbide layers. The methods include forming both minority carrier and majority carrier power devices that can support greater than 10kV blocking voltages, using drift layers having thicknesses greater than about 100um. The drift layers are formed as boule-grown silicon carbide drift layers having a net n-type dopant concentration therein that is less than about 2x10 15 cm -3 . These n-type dopant concentrations can be achieved using neutron transmutation doping (NTD) techniques.
Abstract translation:形成高压碳化硅功率器件的方法利用从高纯度碳化硅晶片材料得到的高纯度碳化硅漂移层,而不是昂贵的外延生长碳化硅层。 这些方法包括使用厚度大于约100um的漂移层来形成能够支持大于10kV阻断电压的少数载流子和多数载流子功率器件。 漂移层形成为其中具有小于约2×10 15 cm -3的净n型掺杂剂浓度的双晶生长碳化硅漂移层。 这些n型掺杂剂浓度可以使用中子转换掺杂(NTD)技术来实现。
Abstract:
A gas driven rotation apparatus for use with a flow of drive gas includes a base member having an upper surface, a main platter overlying the upper surface of the base member, and a satellite platter overlying the main platter. The apparatus is adapted to direct the flow of drive gas between the upper surface of the base member and the main platter such that the main platter is rotated relative to the base member by the flow of drive gas. At least a portion of the flow of drive gas is directed from between the upper surface of the base member and the main platter to between the main platter and the satellite platter such that the satellite platter is rotated relative to the main platter by the at least a portion of the flow of drive gas.
Abstract:
A heating device for controllably heating an article defines a processing chamber to hold the article and includes a housing and an EMF generator. The housing includes a susceptor portion surrounding at least a portion of the processing chamber, and a conductor portion interposed between the susceptor portion and the processing chamber. The EMF generator is operable to induce eddy currents within the susceptor portion such that substantially no eddy currents are induced in the conductor portion. The conductor portion is operative to conduct heat from the susceptor portion to the processing chamber. The heating device may further include a platter and an opening defined in the conductor portion, wherein the opening is interposed between the susceptor portion and the platter.
Abstract:
A heating device for controllably heating an article defines a processing chamber to hold the article and includes a housing and an EMF generator. The housing includes a susceptor portion surrounding at least a portion of the processing chamber, and a conductor portion interposed between the susceptor portion and the processing chamber. The EMF generator is operable to induce eddy currents within the susceptor portion such that substantially no eddy currents are induced in the conductor portion. The conductor portion is operative to conduct heat from the susceptor portion to the processing chamber. The heating device may further include a platter and an opening defined in the conductor portion, wherein the opening is interposed between the susceptor portion and the platter.
Abstract:
Parasitic deposits are controlled in a deposition system for depositing a film on a substrate, the deposition system of the type defining a reaction chamber for receiving the substrate and including a process gas in the reaction chamber and an interior surface contiguous with the reaction chamber. Such control is provided by flowing a buffer gas between the interior surface and at least a portion of the process gas to form a gas barrier layer such that the gas barrier layer inhibits contact between the interior surface and components of the process gas. A deposition system for depositing a film on a substrate using a process gas includes a reaction chamber adapted to receive the substrate and the process gas. The system further includes an interior surface contiguous with the reaction chamber. A buffer gas supply system is adapted to supply a flow of a buffer gas between the interior surface and at least a portion of the process gas such that the flow of the buffer gas forms a gas barrier layer to inhibit contact between the interior surface and components of the process gas when the process gas is disposed in the reaction chamber.