Resources Contact Us Home
Method and arrangement for the response analysis of semiconductor materials with optical excitation

Image Number 12 for United States Patent #6081127.

The invention is directed to a method and an arrangement for the response analysis of semiconductor materials with optical excitation. The object of the invention, to find a new type of response analysis of semiconductor materials with optical excitation which also allows a sufficiently precise detection of the charge carrier wave with a higher excitation output and a shorter charge carrier lifetime, is met according to the invention in that an exciting laser beam is intensity-modulated with two discrete modulation frequencies (.OMEGA..sub.1 ; .OMEGA..sub.2), the luminescent light exiting from the object is measured on the difference frequency (.OMEGA..sub.1 -.OMEGA..sub.2), and the luminescent light is analyzed as a function of the arithmetic mean (.OMEGA.) of the modulation frequencies (.OMEGA..sub.1 ; .OMEGA..sub.2). The invention is applied in the semiconductor industry for determining different electrical parameters of semiconductor materials.

  Recently Added Patents
Coordinated garbage collection for raid array of solid state disks
Process for shaping polymeric articles
Integrated testing circuitry for high-frequency receiver integrated circuits
System for programming domestic appliances and method for programming assembly-line programmable domestic appliances
Disc shaped high density recording medium
Produce container and lid assembly
Hydrolases, nucleic acids encoding them and methods for making and using them
  Randomly Featured Patents
PhoH homolog
Method and system for obtaining computer shutdown information
Thermoelectric conversion material and a process for producing the same
Remote controller for massage chair
Method for trunking radio frequency resources
Attachable container riser
Remotely-handled replaceable component
Interactive prosthesis design system for implantable prosthesis
Portable radio signal transceiver and method of preventing disallowed use thereof
Solid adsorbent for unsaturated hydrocarbon and process for separation of unsaturated hydrocarbon from gas mixture