Patent ID: 8394711

Claim:
A method of simultaneously co-doping a wide band gap material with p-type and n-type impurities to create a p-n junction within the resulting wide band gap composite material, said method comprising: disposing a dopant comprising both p-type and n-type impurities between a pair of wide band gap material films to provide a hosting material and dopant sample; disposing the hosting material and dopant sample between a pair of opposing electrodes of a diffusion device; disposing the hosting material and dopant sample and the electrodes within a vacuum chamber of the diffusion device and subjecting the hosting material and dopant sample to a preselected vacuum; heating the hosting material and dopant sample to a preselected temperature, via a heating element of the diffusion device, while the hosting material and dopant sample is being subjected to the preselected vacuum; applying a preselected voltage across the hosting material and dopant sample, via the opposing electrodes, while the hosting material and dopant sample is being subjected to the preselected vacuum and is maintained at the preselected temperature; and subjecting the hosting material and dopant sample to at least one laser beam having a preselected intensity and a preselected wavelength, via at least one laser source of the diffusion device, while the hosting material and dopant sample is being subjected to the preselected vacuum and is being maintained at the preselected temperature and has the preselected voltage applied there across such that the p-type and n-type impurities of the dopant substantially simultaneously diffuse into the wide band gap material films resulting in a wide band gap compound material comprising a p-n junction.