Publications (9)
Interfacial properties of MoS2 thin films grown on functional substrates
Hafiz Sami Ur Rehman, Nunzia Coppola, Alice Galdi +8
Interface chemistry and defect formation in MoS2 thin films grown on single crystal substrates critically determine the electronic structure of MoS2 and thus can strongly modify ma…
Substrate induced optimization of the Electrocatalytic Hydrogen Evolution Reaction (HER) performances of MoS2 thin film
Hafiz Sami-Ur-Rehman, Arpana Singh, Nunzia Coppola +11
Molybdenum disulfide (MoS2) has emerged as a promising, cost-effective catalyst for hydrogen production via water splitting. We investigate the structural and electrocatalytic prop…
Experimental Reconstruction of Source 4D Phase Space Without Prior Knowledge of Transfer Matrix
Charles Zhang, Elena Echeverria, Abigail Flint +7
We experimentally demonstrate a method for reconstructing the transverse 4D phase space of an electron beam at the time of emission from downstream diagnostics of the 4D phase spac…
Triple Evaporation of Bialkali Antimonide Photocathodes and Photoemission Characterization at the PhoTEx Experiment
Jonas Dube, Julius Kühn, Chen Wang +4
The development of high-performance photocathodes is essential for generating high-brightness electron beams required by existing and future accelerators. This work introduces a st…
Quantitative Photoemission Predictions of Semiconducting Photocathodes from Many-Body Ab Initio Theory
Richard Schier, Chen Wang, Jonas Dube +4
The development of high-performance electron sources requires theoretical frameworks that accurately link the microscopic electronic properties of cathode materials to their macros…
Operation of Cs-Sb-O activated GaAs in a high voltage DC electron gun at high average current
Jai Kwan Bae, Matthew Andorf, Adam Bartnik +4
Negative Electron Affinity (NEA) activated GaAs photocathodes are the most popular option for generating a high current (> 1 mA) spin-polarized electron beam. Despite its popularit…