摘要:
A method of passivating interface states of oxide-compound semiconductor interfaces using molecular, atomic, or isotopic species wherein said species are applied before oxide deposition in ultra-high vacuum, or during interruption of oxide deposition in ultra-high vacuum (preferentially after oxide surface coverage of a submonolayer, a monolayer, or a few monolayers), or during oxide deposition in ultra-high vacuum, or after completion of oxide deposition, or before or after any processing steps of the as deposited interface structure. In a preferred embodiment, hydrogen or deuterium atoms are applied to a Ga.sub.2 O.sub.3 --GaAs interface at some point before, during, or after oxide deposition in ultra-high vacuum, or before or after any processing steps of the as deposited interface structure, at any given and useful substrate temperature wherein the atomic species can be provided by any one of RF discharge, microwave plasma discharge, or thermal dissociation.
摘要翻译:使用分子,原子或同位素物质钝化氧化物 - 化合物半导体界面的界面状态的方法,其中所述物质在超高真空中的氧化物沉积之前或在超高真空(优选氧化物表面之后) 亚单层,单层或几个单层的覆盖),或者在超高真空中的氧化物沉积期间,或在氧化物沉积完成之后,或在作为沉积的界面结构的任何处理步骤之前或之后。 在一个优选的实施方案中,在超高真空中的氧化物沉积之前,期间或之后的某个时刻,或者在作为沉积的界面结构的任何处理步骤之前或之后,在任何时候,在任何时候,将氢或氘原子施加到Ga 2 O 3 -GaAs- 给定和有用的衬底温度,其中可以通过RF放电,微波等离子体放电或热解离中的任何一种来提供原子种类。
摘要:
A method of fabricating a gate quality oxide-compound semiconductor structure includes forming an insulating Ga.sub.2 O.sub.3 layer on the surface of a compound semiconductor wafer structure by a supersonic gas jet containing gallium oxide molecules and oxygen. In a preferred embodiment, a III-V compound semiconductor wafer structure with an atomically ordered and chemically clean semiconductor surface is transferred from a semiconductor growth chamber into an insulator deposition chamber via an ultra high vacuum preparation chamber. Ga.sub.2 O.sub.3 deposition onto the surface of the wafer structure is initiated by a supersonic gas jet pulse and proceeds via optimization of pulse duration, speed of gas jet, mole fraction of gallium oxide molecules and oxygen atoms, and plasma energy.
摘要翻译:制造栅极质量氧化物半导体结构的方法包括通过含有氧化镓分子和氧的超音速气体射流在化合物半导体晶片结构的表面上形成绝缘Ga 2 O 3层。 在优选实施例中,具有原子级和化学清洁的半导体表面的III-V族化合物半导体晶片结构经由超高真空准备室从半导体生长室转移到绝缘体沉积室中。 通过超音速气体喷射脉冲引发晶片结构表面上的Ga 2 O 3沉积,并且经历脉冲持续时间,气体射流速度,氧化镓分子和氧原子的摩尔分数以及等离子体能量的优化。
摘要:
A method of fabricating submicron HFETs includes forming a buffered substrate structure with a supporting substrate of GaAs, a portion of low temperature AlGaAs grown on the supporting substrate at a temperature of approximately 300.degree. C., a layer of low temperature GaAs grown on the portion AlGaAs layer at a temperature of 200.degree. C., a layer of low temperature AlGaAs grown on the GaAs layer at a temperature of 400.degree. C., and a buffer layer of undoped GaAs grown on the second AlGaAs layer. Complementary pairs of HFETs can be formed on the buffered substrate structure, since the structure supports the operation of p and n type transistors equally well.
摘要:
A gate quality oxide-compound semiconductor structure (10) is formed by the steps of providing a III-V compound semiconductor wafer structure (13) with an atomically ordered and chemically clean semiconductor surface in an ultra high vacuum (UHV) system (20), directing a molecular beam (26) of gallium oxide onto the surface of the wafer structure to initiate the oxide deposition, and providing a second beam (28) of atomic oxygen to form a Ga.sub.2 O.sub.3 layer (14) with low defect density on the surface of the wafer structure. The second beam of atomic oxygen is supplied upon completion of the first 1-2 monolayers of Ga.sub.2 O.sub.3. The molecular beam of gallium oxide is provided by thermal evaporation from a crystalline Ga.sub.2 O.sub.3 or gallate source, and the atomic beam of oxygen is provided by either RF or microwave plasma discharge, thermal dissociation, or a neutral electron stimulated desorption atom source.
摘要翻译:通过在超高真空(UHV)系统(20)中提供具有原子级和化学清洁的半导体表面的III-V化合物半导体晶片结构(13)的步骤形成栅极质量氧化物 - 化合物半导体结构(10) 将氧化镓的分子束(26)引导到晶片结构的表面上以引发氧化物沉积,以及提供原子氧的第二光束(28)以在表面上形成具有低缺陷密度的Ga 2 O 3层(14) 的晶片结构。 当第一个1-2单层的Ga2O3完成时,第二个原子氧束被提供。 通过从结晶Ga 2 O 3或没食子酸酯源的热蒸发提供氧化镓的分子束,并且氧原子束由RF或微波等离子体放电,热解离或中性电子刺激的解吸原子源提供。
摘要:
Processing and tracking of individual mail items processed through a document processing system such as a sorter or inserter utilize a mail item identifier that is unique with respect to each individual mail item. A mail item may have a postal authority approved code representing or containing its associated unique identifier. If not, an identifier is generated and a corresponding postal authority approved code is applied to the mail item. Processing entails associating the unique mail item identifier for each respective mail item with collected metadata for the respective mail item and storing the identifier and associated the metadata. In a sorter example, each mail item is sorted into a postal sort group, and the processing entails identifying the sort group to which each item is sorted and storing the identified sort in association with the unique mail item identifier.
摘要:
The present application relates to a method and system for mail item processing. More particularly, the present application relates to a method and system alerting document processing operators when all mail items have reached a designated bin in order to improve accuracy and efficiency during document processing as well as improving the overall efficiency of the document processing facility.
摘要:
The present application generally relates to address data maintenance services using a mail processing system. The present application discloses techniques and equipment to update address information and usage of mail processing equipment to print delivery point barcodes that represent the current and accurate address information available for the addressee. The present application also provides a new approach for storing and searching address and name run time directories as part of a mail processing system using address reader technology.
摘要:
Systems and method of processing one or more documents are shown and described. The orientation of a magnetic character is sensed on the document. The orientation is processed and used to control a sort processing device.
摘要:
Heat-sensitive, foamable liquids such as latex, are concentrated in a continuous process without foaming by feeding a heated liquid to a tubular evaporation chamber maintained at a reduced pressure where the liquid is adiabatically vaporized and forms an annularly flowing two-phase stream. The liquid and vapor phases are largely separated in the evaporation chamber by centrifugal forces acting on the stream. The final separation and isolation of the liquid phase is achieved in a separator consisting of a cyclone separator, a reservoir for the concentrated liquid and a settling chamber.
摘要:
The present teachings relate to a method and system for the processing of mail items within a multiple device document processing environment to ensure generation of unique mail items. The present teachings provides for an improved system and method for assigning and maintaining unique mail item identifiers and processing of the unique mail items in a multiple mail processing device environment to qualify for maximum postal work sharing discounts.