| http://www.w3.org/ns/prov#value | - This technique has been extensively employed to fabricate an electronic device such as a hetero-bipolar transistor (HBT) and high electron mobility transistor (HEMT), and an optical device such as a light emitting diode (LED), laser diode (LD). photodiode (PD) and optical waveguide, all these devices requiring a hetero-junction structure of a different composition.
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