摘要:
A thin layer semiconductor device comprising a mixed crystal, InSb(1 x)Asx composed of indium, In, antimony, Sb, and arsenic, As, in a compounding ratio in which x satisfies the following relationship.
摘要:
A process for epitaxially growing a III-V mixed-compound semiconductor crystal composed of three or more components on a semiconductor substrate made of a different material from the crystal utilizes a disproportionation reaction in a halogen vapor transport. The back and side faces of the substrate are covered with a material chemically stable against halogen or halides at the epitaxial temperature of the mixed crystal, and a compound, selected from among the crystal-composing compounds which has a relatively low epitaxial temperature, is epitaxially grown on the substrate maintained at said temperature. The temperature of the substrate is then increased to the epitaxial temperature of the crystal, and epitaxial growth of the crystal is carried out on the compound.
摘要:
THE INVENTION HERE DISCLOSED IS AN INDIUM ANTIMONIDE INFRARED DETECTOR AND A PROCESS FOR MAKING THE SAME. A DIFFUSION PROCESS YIELDS A VERY SHALLOW P-REGION ON AN N-TYPE INDIUM ANTIMONIDE SUBSTRATE. THIS LAYER HAS A THICKNESS OF 1.0 TO .5 MICRON AND HAS A HIGH CONCENTRATION OF ACCEPTORS, PROVIDING A VERY EFFICIENT COLLECTION REGION OF CARRIER CREATED BY PHOTON ABSORPTION. THE LAYER IS OF CADMIUM OR ZINC AND THE CONCENTRATION IS WITHIN A RANGE SUCH THAT WHILE LATTICE DAMAGE OCCURS DETECTOR OPERATION IS NOT IMPAIRED. THE LAYER IS SO SHALLOW THE MOST OF THE CARRIER CREATED BY PHOTON ABSORPTION ARE COLLECTED.
摘要:
Tri-isopropylantimony is used as a source of antimony in chemical vapor deposition production of semiconductor materials. The process can be used to introduce antimony as a dopant into III/V and II/VI semiconductor materials.
摘要:
A process for preparing high sensitivity indium antimonide film magnetoresistance element. A silicon single crystal wafer is treated with oxidative diffusion to form a layer of silicon oxide on the surface of the silicon single crystal, a layer of indium antimonide is grown on the substrate by vapor deposition, and the indium antimonide layer is then subjected to a specific annealing treatment in which the indium antimonide layer is partially oxidized and then re-crystallized. The resultant magnetoresistance element possessing improved sensitivity, stability and suitable for large scale production is obtained.
摘要:
This invention relates to ultra-thin semiconductor films which can be in the submicron range formed from semiconductor materials such as silicon, germanium and gallium aresenide. The films are formed by creating a thin slightly damaged surface on the polished reverse side of a film (e.g., a wafer) of the semiconductor by low dose ion implantation and then etching the semiconductor material on the front side of the film to remove the semiconductor material down to the ion implanted damaged layer. While the implanted ions can be chosen from functionally desirable ions which upon annealing remain in the film to alter the original electrical characteristics, the implanted ions can also be chosen so that upon annealing, the resultant ultra-thin semiconductor film has the same electrical characteristics as the original semiconductor material.The ion implantation changes the etching characteristics of the ion implanted layer. Thus, when the partially damaged semiconductor material is exposed to an etchant the etching rate in the damaged region is decreased by a factor of several thousand as compared to the undamagGOVERNMENT FUNDINGThe invention described and claimed herein was at least in part supported by the National Submicron Facility under NSF Grant #ECS-8200312 to the NRRFSS.
摘要:
An improved system and method for annealing indium antimonide ion implanted junctions employing an open-tube benign annealing environment. A furnace having a hollow chamber therein is maintained continuously at a predetermined annealing temperature and wafers of indium antimonide to be annealed are inserted into the chamber through a resealable airlock at one end of the chamber. A source of molten indium saturated with antimony is provided within the chamber to maintain desired partial pressures of indium and antimony within the chamber. Hydrogen gas is continuously flushed through the chamber to purge contaminants and maintain the chamber at a desired slight overpressure over atmospheric. At the conclusion of annealing, the indium antimonide wafer is removed from the chamber into the airlock which is flushed with hydrogen gas. The wafer is allowed to cool to room temperature and removed from the airlock for subsequent processing steps.
摘要:
An intermetallic compound semiconductor thin film comprises a single crystalline deposition thin film made of a III-V group intermetallic compound having a stoichiometry composition ratio of 1:1. When forming the III-V group semiconductor thin film by an evaporation method, a substrate temperature is initially maintained at a high level while the evaporation source temperature is gradually raised, and when the intermetallic composition of the III-V group begins to deposit on the substrate, the substrate temperature is lowered while the evaporation source temperature is maintained at the same level as existed at the time when the intermetallic compound is deposited, and the deposition time is controlled.
摘要:
Solid layer semiconductor compositions are deposited by the simultaneous sputtering from a sputter target and electrically discharge a reacting gas preferably by application of an RF potential. Preferably, the method is used to make solid solution layers and most desirably solid solution epitaxial layers of at least two semiconductor materials. The method may be used to make novel metastable compositions such as (GaAs).sub.1.sub.-x Si.sub.x, (GaAs).sub.1.sub.-x Ge.sub.x, (InSb).sub.1.sub.-x Si.sub.x, (InSb).sub.1.sub.-x Ge.sub.x, (InAs).sub.1.sub.-x Si.sub.x and (InAs).sub.1.sub.-x Ge.sub.x (where x is a number greater than about 0.01, and x + (1-x) = 1, and Ga.sub.x As.sub.y Si.sub.z, Ga.sub.x As.sub.y Ge.sub.z, In.sub.x Sb.sub.y Si.sub.z, In.sub.x Sb.sub.y Ge.sub.z, In.sub.x As.sub.y Si.sub.z, In.sub.x As.sub.y Ge.sub.z and In.sub.x Sb.sub.y As.sub.z (where x, y and z are numbers greater than about 0.01, and x + y + z = 1).
摘要翻译:通过溅射靶的同时溅射沉积固体层半导体组合物,并优选通过施加RF电势对反应气体进行放电。 优选地,该方法用于制备至少两种半导体材料的固溶层和最希望的固溶体外延层。 该方法可用于制备新型亚稳组合物,例如(GaAs)1-xSix,(GaAs)1-xGex,(InSb)1-xSix,(InSb)1-xGex,(InAs)1-xSix和(InAs) 1-xGex(其中x是大于约0.01的数字,x +(1-x)= 1,GaxAsySiz,GaxAsyGez,InxSbySiz,InxSbyGez,InxAsySiz,InxAsyGez和InxSbyAsz(其中x,y和z是大于 约0.01,x + y + z = 1)。
摘要:
TO PRODUCE A P-CONDUCTIVITY TYPE WIDE BAND GAP SEMICONDUCTOR MATERIAL, A III-V COMPOUND SEMICONDUCTOR LAYER IS FIRST VACUUM EVAPORATED ONTO AND THEN DIFFUSED INTO A CRYSTALLINE II-VI COMPOUND SEMICONDUCTOR SUBSTRATE, SPECIFICALLY A ZINC CHALCOGENIDE. THE RESULTING HYBRID CRYSTALLINE MATERIAL IS DOPED BY SIMULTANEOUS OR SEQUENTIAL INFUSION OF ZINC ATOMS IN SUBSTITUTION FOR ATOMS OF THE GROUP III ELEMENT. THE PROCESS MAY BE USED FOR THE DIRECT PRODUCTION OF P-N JUNCTIONS IN ZINC CHALOGENIDES BY EMPLOYING AN N-TYPE RATHER THAN AN INTRINSIC SUBSTRATE.