Maskless selective epitaxial growth on patterned GaAs substrates by metalorganic chemical vapor deposition

Abstract

Maskless one-step selective CCl4-doped GaAs epilayers have been grown on patterned GaAs substrates by atmospheric pressure metalorganic chemical vapor deposition. The growth technique has potential for realizing a well-defined quantum confinement structure and lateral structure device. Round shaped CCl4-doped GaAs epilayer was selectively grown inside a U-groove and on the sidewalls of a mesa with a significant lateral growth rate enhancement, whereas no growth was observed outside U-groove and on top of the mesa.