More Like this

1. Thickness dependent growth of Ge nanoparticles in amorphous Ge/SiO2 multilayers

   https://doi.org/10.1016/j.vacuum.2021.110294  

   Pivac, B.; Dubček, P.; Zorc, H.; Bernstorff, S.; Vlahovic, B.; Zavašnik, J. (August 2021, Vacuum)
2. Formation of Ge–GeS core–shell nanostructures via solid-state sulfurization of Ge nanowires

   https://doi.org/10.1039/C8CE00221E  

   Keiser, Courtney; Sutter, Peter; Sutter, Eli (January 2018, CrystEngComm)

   Germanium nanowires (NWs) have attractive properties for a variety of applications, including micro- and optoelectronics, memory devices, solar energy conversion, and energy storage, among others. For applications that involve exposure to air, the poor chemical stability and electronic surface passivation of native oxides have remained a long-standing concern. Termination by sulfur-rich surface layers has emerged as a promising strategy for passivation of planar Ge surfaces. Here we discuss experiments on solid-state sulfurization of Ge nanowires in sulfur vapor at near-ambient pressures and at different temperatures. Combined transmission electron microscopy imaging and chemical mapping establishes that Ge NWs remain intact during vapor-phase reaction with S at elevated temperatures, and show the formation of sulfur-rich shells with T-dependent morphology and thickness on the Ge NW surface. Photoluminescence of ensembles of such core–shell nanowires is dominated by strong emission at ∼1.85 eV, consistent with luminescence of GeS. Cathodoluminescence spectroscopy on individual NWs establishes that this luminescence originates in thin GeS shells formed by sulfurization of the NWs. Our work establishes direct sulfurization as a viable approach for forming stable, wide-bandgap surface terminations on Ge NWs. 

   more » « less
3. Surface Integrity of Diamond Turned (100)Ge

   https://doi.org/10.1016/j.procir.2022.03.103  

   Tunesi, M.; Lucca, D.A.; Davies, M.A.; Zare, A.; Gordon, M.C.; Sizemore, N.E.; Wang, Y.Q. (January 2022, Procedia CIRP)
4. Relevance of the Nuclear Structure of the Stable Ge Isotopes to the Neutrino-less Double-Beta Decay of ⁷⁶ Ge

   https://doi.org/10.1051/epjconf/202023204011  

   Yates, S. W.; Peters, E. E.; Crider, B. P.; Mukhopadhyay, S.; Ramirez, A. P.; Mitchell, A.J.; Pavetich, S.; Koll, D. (January 2020, EPJ Web of Conferences)

   Gamma-ray detection following the inelastic neutron scattering reaction on isotopically enriched material was used to study the nuclear structure of 74 Ge. From these measurements, low-lying, low-spin excited states were characterized, new states and their decays were identified, level lifetimes were measured with the Doppler-shift attenuation method (DSAM), multipole mixing ratios were established, and transition probabilities were determined. New structural features in 74 Ge were identified, and the reanalysis of older 76 Ge data led to the placement of the 2 + member of the intruder band. In addition, a number of previously placed states in 74 Ge were shown not to exist. A procedure for future work, which will lead to meaningful data for constraining calculations of the neutrinoless double-beta decay matrix element, is suggested. 

   more » « less
5. The impact of the charge barrier height on Germanium (Ge) detectors with amorphous-Ge contacts for light dark matter searches

   https://doi.org/10.1140/epjc/s10052-020-8029-0  

   Wei, W.-Z.; Panth, R.; Liu, J.; Mei, H.; Mei, D.-M.; Wang, G.-J. (May 2020, The European Physical Journal C)