The Washington State University (WSU) repository maintained by Dr. Scudiero.

The remains a valuable resource for researchers needing a quick, efficient, and free way to deconvolute XPS spectra. By following the installation instructions for handling legacy software and utilizing its robust fitting tools, users can obtain high-quality chemical state analysis.

Determine the best parameters (FWHM constraints, Gaussian/Lorentzian ratios) for specific elements like carbon (C1s), oxygen (O1s), or various metals.

💡 Always remember to calibrate your binding energy scale to the Adventitious Carbon (C1s) peak at 284.8 eV before finalizing your peak fitting to ensure accuracy across different samples.

XPSPEAK 4.1 remains one of the most widely used software tools for analyzing X-ray Photoelectron Spectroscopy (XPS) data. Despite being a legacy Windows application, its simplicity, powerful fitting algorithms, and zero-cost availability make it a staple in materials science and chemistry laboratories worldwide.

XPSPEAK41 is a specialized software program designed for the analysis and processing of XPS (X-ray Photoelectron Spectroscopy) data. Written by Raymund Kwok, this freeware application allows users to import raw XPS spectra, perform background correction, add multiple peaks, and optimize the fitting process to obtain accurate chemical state information.

Many university materials science labs host the .zip or .exe file on their public software resource pages for student use.

Click Optimization . The software will use a least-squares fitting algorithm to match your synthetic peaks to the experimental data. Why Researchers Still Use XPSpeak 4.1