Patent ID: 7575982
Filing Date: 2009-08-18
Classification: C23C,H01L

Abstract:
1. A method of fabricating compound nitride semiconductor structures, the method comprising: flowing a first group-III precursor and a first nitrogen precursor into a first processing chamber, the first group-III precursor comprising a first group-III element; depositing a first layer over a surface of a first sapphire substrate with a thermal chemical-vapor-deposition process within the first processing chamber using the first group-III precursor and the first nitrogen precursor, the first layer comprising nitrogen and the first group-III element; depositing a second layer over a surface of a second sapphire substrate with the thermal chemical-vapor-deposition process within the first processing chamber using the first group-III precursor and the first nitrogen precursor, the second layer comprising nitrogen and the first group-III element, wherein: further comprising splitting the first and second sapphire substrates from the stack after deposition the first layer and depositing the second layer, wherein splitting the first and second sapphire substrates from the stack comprises cooling the stack to induce a splitting force from a differential thermal expansion between the first layer and the first sapphire substrate and between the second layer and the second sapphire substrate.