Electro-Optical Characterization of an Amorphous Germanium-Tin (Ge1-XSnx) Microbolometer

Non-equilibrium induction of tin in germanium: towards direct bandgap Ge1−xSnx nanowires

The development of non-equilibrium group IV nanoscale alloys is critical to achieving new functionalities, such as the formation of a direct bandgap in a conventional indirect bandgap elemental semiconductor. Here, we describe the fabrication of uniform diameter, direct bandgap Ge(1-x)Sn(x) alloy nanowires, with a Sn incorporation up to 9.2 at.%, far in excess of the equilibrium solubility of S...

Optical transitions in direct bandgap Ge1-xSnx alloys

A comprehensive study of optical transitions in direct bandgap Ge0.875Sn0.125 group IV alloys via photoluminescence measurements as a function of temperature, compressive strain and excitation power is performed. The analysis of the integrated emission intensities reveals a strain-dependent indirect-to-direct bandgap transition, in good agreement with band structure calculations based on 8 band...

The Dawn of New Quantum Dots: Synthesis and Characterization of Ge1-xSnx Nanocrystals for Tunable Bandgaps

Mid-infrared transmission properties of amorphous germanium optical fibers

Germanium optical fibers have been fabricated using a high pressure chemical deposition technique to deposit the semiconductor material inside a silica capillary. The amorphous germanium core material has a small percentage of hydrogen that saturates the dangling bonds to reduce absorption loss. Optical transmission measurements were performed to determine the linear losses over a broad mid-inf...

REDSHIFT IN THE OPTICAL BAND GAP OF AMORPHOUS NANOSTRUCTURE Se80Te20-xSnx FILMS

Ternary glasses of Se80Te20-xSnx (x=3 and 9 at.%) are prepared by melt quench technique. Thin films of Se80Te20-xSnx (x=3 and 9 at.%) of different thicknesses in the range of (25 nm -1450 nm) are prepared by the conventional thermal evaporation technique on glass substrate. X-ray diffraction measurements show that both bulk and thin films of Se80Te20-xSnx have amorphous natures. Optical transmi...