Resources Contact Us Home
Semiconductor layer structure with superlattice

Image Number 5 for United States Patent #7893424.

The semiconductor layer structure includes a superlattice composed of stacked layers of III-V compound semiconductors of a first and at least one second type. Adjacent layers of different types in the superlattice differ in composition with respect to at least one element, at least two layers of the same type have a different content of the at least one element, the content of the at least one element is graded within a layer of the superlattice, and the layers of the superlattice contain dopants in predefined concentrations, with the superlattice comprising layers that are doped with different dopants. In this way, the electrical, optical and epitaxial properties of the superlattice can be adapted in the best possible manner to given requirements, particularly epitaxial constraints.

  Recently Added Patents
Stopper, motor, and disk drive apparatus
Information processing apparatus and storage medium for storing information processing program
Calcium carbonate granulation
Electronic device with a screen
Monitoring device, monitoring method and non-transitory computer readable medium
Image forming apparatus acquiring image processing time detected when the acquired time is longer that the previously set time and to correct output image density using generated patch pattern
  Randomly Featured Patents
Method of forming image providing a change in sensitivity by altering the pH of the developer
Integrated circuit package having heat sink bonded with resinous adhesive
Blend of a polyester and a polycarbonate
1,2,3-Triazole carboxylic acid amides and biocidal compositions containing the same
Process of preparation of amino functionalized diene polymers, polymers of such type, rubber composition and tire casing containing those polymers
Moving target speed and direction determining radar system
Semiconductor device and method of producing the same
Photoprotection compositions and methods comprising sorbohydroxamic acid
Lavage valve
Timer key ring