Data-set supporting the paper “Material and optical properties of low-temperature NH3-free PECVD SiNx layers for photonic applications”. Journal of Physics D: Applied Physics University of Southampton - ORC - Thalia Domínguez Bucio - tdb2g12@soton.ac.uk Date of data collection: March 2015- September 2016 Date that the file was created: September 2016 Location of data collection: University of Southampton, U.K. License: Creative Commons Attributions Publications : http://eprints.soton.ac.uk/id/eprint/402364 The excel file contains experimental data for the paper: • Fig. 2 Measured deposition rate (DR [nm/s]) for SiNx layers deposited using NH3-free PECVD with different SiH4 flow [sccm], N2 flow [sccm], RF power [W] and pressure [mTorr]. • Fig. 3 Measured Non-Uniformity % for SiNx layers deposited using NH3-free PECVD with different RF power [W] and pressure [mTorr]. • Fig. 4 Data for displaying the uniformity contour plot of stoichiometric (Si3N4) and silicon rich (Si-rich) SiNx layers deposited using NH3-free PECVD on a wafer scale. • Fig. 5 Measured N/Si ratio for SiNx layers deposited using NH3-free PECVD with different SiH4 flow [sccm], N2 flow [sccm], RF power [W] and pressure [mTorr]. • Fig. 6 Refractive index as a function of the N/Si ratio of SiNx layers deposited using NH3-free PECVD. • Fig. 7 Data containing the FTIR spectra of SiNx layers deposited using NH3-free PECVD and standard PECVD recipes. • Fig. 8 Si-Si and Si-N bond concentrations as a function of the N/Si ratio of SiNx layers deposited using NH3-free PECVD. • Fig. 9 Si-H and N-H bond concentrations as a function of the N/Si ratio of SiNx layers deposited using NH3-free PECVD. • Fig. 10 H concentration % as a function of the N/Si ratio of SiNx layers deposited using NH3-free PECVD. • Fig. 12 Propagation losses[dB/cm] at 1310 and 1550nm as a function of the N/Si ratio of SiNx layers deposited using NH3-free PECVD on wafers with PECVD SiO2 layers. • Fig. 13 Propagation losses[dB/cm] at 1310 and 1550nm as a function of the N/Si ratio of SiNx layers deposited using NH3-free PECVD on wafers with thermal SiO2 layers. • Fig. 14 Data comparing the propagation loses [dB/cm] at different wavelengths for SiNx layers deposited using LPCVD, standard PECVD and NH3-free PECVD.