Patent ID: 8183132

Claim:
A method for fabricating a compound nitride structure, comprising: forming a group III nitride layer on each of two or more substrates disposed in a first processing chamber, wherein forming the group III nitride layer comprises: flowing a reactive gas comprising chlorine gas over a hydride vapor phase epitaxial (HVPE) precursor source to form a first reaction product comprising gallium chloride or aluminum chloride; and flowing the formed first reaction product to the two or more substrates disposed in the first processing chamber; transferring the two or more substrates from the first processing chamber to a second processing chamber in a first controlled environment; forming a ternary group III nitride layer over the group III nitride layer in the second processing chamber; transferring the two or more substrates from the second processing chamber to a third processing chamber in a second controlled environment; and forming a first doped group III nitride layer over the ternary group III nitride layer in the third processing chamber.