Low-Temperature Growth of Polycrystalline AlN Films by Microwave Plasma CVD

Abstract
The growth of polycrystalline AlN film at a rate of 60 nm·min-1 was accomplished at a substrate temperature of 550°C by a coaxial-line-type microwave plasma chemical vapor deposition (CVD) method using the AlBr3-H2-N2 gas system. Excellent c-axis orientation was observed on the film having a half-width rocking curve of (001)AlN (Δθ50) of 2.1 degrees. No carbon or bromine was detected by the AES measurements.