Gallium Nitride(GaN) HEMT epitaxial wafer

Gallium Nitride (GaN) HEMTs (High Electron Mobility Transistors) are the next generation of RF power transistor technology.Thanks to GaN technology,PAM-XIAMEN now offer AlGaN/GaN HEMT Epi Wafer on sapphire or Silicon,and AlGaN/GaN on sapphire template.

xiamen,fujian,China., March 5, 2014 - (PressReleasePoint) -
2" GaN HEMT Epitaxial Wafers
We offer 2" GaN HEMT Wafers, the structure is as follows:
Structure(from top to bottom):
*undoped GaN cap(2~3nm)
AlxGa1-xN (18~40nm)
AlN(buffer layer)
un-doped GaN(2~3um)
Sapphire substrate
* We can use Si3N to replace GaN on the top, the adhesion is strong, it is coated by sputter or PECVD.
AlGaN/GaN HEMT Epi Wafer on sapphire/GaN

Layer ID Layer Name Material Al Content(%) Dopant Thickness(nm)
0 Substrate GaN or Sapphire
1 Nucleation Layer Various,AlN 100 DID
2 Buffer Layer GaN 0 NID 1800
3 Spacer AlN 100 NID 1
4 Schottky Barrier AlGaN 20 or 23 or 26 NID 21

2"AlGaN/GaN on sapphire
For specification of AlGaN/GaN on sapphire template, please contact our sales department:
Application: Used in blue laser diodes, ultraviolet LEDs (down to 250 nm), and AlGaN/GaN HEMTs device.
Explanation of AlGaN/Al/GaN HEMTs:
Nitride HEMTs are being intensively developed for high-power electronics in high-frequency amplification and power switching applications. Often high performance in DC operation is lost when the HEMT is switched – for example, the on-current collapses when the gate signal is pulsed. It is thought that such effects are related to charge trapping that masks the effect of the gate on current flow. Field-plates on the source and gate electrodes have been used to manipulate the electric field in the device, mitigating such current-collapse phenomena.
Related Classification:
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If you need more information about GaN HEMT epitaxial wafer,please visit our website:, send us email at or

Press Contact:
Victor Chan
Anling,Huli Developing Zone
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