Data publication: In-depth Surface Studies of p-GaN:Cs Photocathodes by Combining Ex-Situ Analytical Methods with In-Situ X-Ray Photoelectron Spectroscopy

All datasets that were generated during the PhD period and evaluated for the PhD thesis. The data contains .txt files, fotos (.jpeg, .png, .tiff, etc.), SEM and AFM images of p-GaN, p-GaAs and Cs2Te semiconductor sample sets. The files are sorted by sample names and the sample files contain different datasets of each sample. The whole uploaded file contains original data of XPS and heating experiments as well as evaluated data of the original files. Experiments were done to study the surface cleanness by different solvents, thermal cleaning experiments in vacuum, cesium deposition, measurement of quantum efficiencies, and the lifetime of photocathodes. The Cs2Te experiments contain the deposition parameters of the cesium and tellurium deposition on copper and the preparation steps of the Cu substrate.