Study on the stress of silicon nitride thin films prepared by PECVD

摘要

The residual stresses on silicon nitride thin films that were fabricated by PECVD were studied in this paper. A wafer-curvature measurement method was used to determine the stresses of silicon nitride films. The structure of fixed-fixed beam was also developed to compare with the stress measurement. The contributions of processing parameters on the stress of silicon nitride films were analyzed.