Germanium extraction from copper cake

Kul, Mehmet


Germanium nanowire synthesis using solid precursors
AKSOY, Burcu; Kalay, Yunus Eren; Ünalan, Hüsnü Emrah (2014-04-15)
We report on the synthesis of single crystalline, high aspect ratio germanium (Ge) nanowires (NWs) by vapor transport method using three different solid powder precursors. Investigated precursors were either powder like germanium or powder mixtures like germanium dioxide with carbon and germanium iodide with germanium. As-grown NWs were analyzed using scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-Ray diffraction (XRD) and X-Ray photoelectron spectroscopy (XPS) to obtain struc...
Germanium solar cells prepared by ion implantation
Kabacelik, Ismail; Turan, Raşit (2013-09-01)
Development of Ge solar cells for multijunction solar cells, where the p-n junction is formed by ion implantation is investigated. Ge samples are doped by phosphorus (P) ions having 60 keV energy at dose ratios of 1x10(13), 1x10(14), 1x10(16) ve 1x10(16) ions/cm(2) at room temperature. The influences of P concentration and activation temperature on Ge solar cells is investigated. P concentration and layer resistance are measured by secondary ion mass spectrometry (SIMS) and a 4-point probe, respectively. La...
DAG, O; KUPERMAN, A; OZIN, GA (Wiley, 1994-02-01)
Uniform arrays of intrazeolite germanium nanoclusters have been produced by the topotactic chemical vapor deposition of digermane within the diamond network of alpha-cages of acid zeolite Y and the main channel of mordenite. The conditions within the zeolite hosts ensure that the Ge2H2 CVD-type anchored precursors self-assemble to produce the anchored (Ge8)n+ nanoclusters shown in the Figure.
Germanium determination by flame atomic absorption spectrometry: An increased vapor pressure-chloride generation system
Kaya, Murat; Volkan, Mürvet (Elsevier BV, 2011-03-15)
A new chloride generation system was designed for the direct, sensitive, rapid and accurate determination of the total germanium in complex matrices. It was aimed to improve the detection limit of chloride generation technique by increasing the vapor pressure of germanium tetrachloride (GeCl4). In order to do so, a novel joint vapor production and gas-liquid separation unit equipped with a home-made oven was incorporated to an ordinary nitrous oxide-acetylene flame atomic absorption spectrometer. Several va...
Gallium arsenide/aluminum gallium arsenide double heterostructure laser diodes
Gezer, Cem; Aydın, Ramazan; Department of Physics (1999)
Citation Formats
M. Kul, “Germanium extraction from copper cake,” Middle East Technical University, 1997.