Publications by authors named "Jake M Evans"
Progress in superconducting device and detector technologies over the past decade has realized practical applications in quantum computers, detectors for far-infrared telescopes, and optical communications. Superconducting thin-film materials, however, have remained largely unchanged, with aluminum still being the material of choice for superconducting qubits and niobium compounds for high-frequency/high kinetic inductance devices. Magnesium diboride (MgB), known for its highest transition temperature ( = 39 K) among metallic superconductors, is a viable material for elevated temperature and higher frequency superconducting devices moving toward THz frequencies.
View Article and Find Full Text PDFManganese antimonate (MnSbO) electrocatalysts for the oxygen-evolution reaction (OER) were synthesized via chemical vapor deposition. Mn-rich rutile MnSbO catalysts on fluorine-doped tin oxide (FTO) supports drove the OER for 168 h (7 days) at 10 mA cm with a time-averaged overpotential of 687 ± 9 mV and with >97% Faradaic efficiency. Time-dependent anolyte composition analysis revealed the steady dissolution of Mn and Sb.
View Article and Find Full Text PDFTransient extreme ultraviolet (XUV) spectroscopy is becoming a valuable tool for characterizing solar energy materials because it can separate photoexcited electron and hole dynamics with element specificity. Here, we use surface-sensitive femtosecond XUV reflection spectroscopy to separately measure photoexcited electron, hole, and band gap dynamics of ZnTe, a promising photocathode for CO reduction. We develop an ab initio theoretical framework based on density functional theory and the Bethe-Salpeter equation to robustly assign the complex transient XUV spectra to the material's electronic states.
View Article and Find Full Text PDFArticle Synopsis
- There is a rising need for custom molecular inks to create semiconductor films with specific phases, specifically within the Cu-Sn-S group.
- Thiol-amine solvent mixtures can dissolve affordable CuS and SnO to produce free-flowing inks, allowing for the creation of different CuSnS film polymorphs through controlled annealing by altering the thiol used.
- The research highlights that varying the ink formulation leads to distinct molecular complexes, which influences the resulting films' properties, including similar direct optical band gaps and notable photoelectrochemical performance.