Sulfide-based luminescent materials have attracted a lot of attention for a wide range of photo-, cathodoand electroluminescent applications. Upon doping with Ce 3+ and Eu 2+ , the luminescence can be varied over the entire visible region by appropriately choosing the composition of the sulfide host. Main application areas are flat panel displays based on thin film electroluminescence, field em...

Efficient infrared lumophores are urgently needed in a host of biological sensing applications.1 Such applications demand light emitters that meet a number of requirements simultaneously. First, the light-emitting species must be stable and bright (quantum yield >10%) under biologically relevant conditions including buffered conditions. In addition, emission in the near-IR (NIR) and shortwavele...

Highly photoconductive thin films of inorganic-capped PbS nanocrystal quantum dots (QDs) are reported. Stable colloidal dispersions of (NH4)3AsS3-capped PbS QDs were processed by a conventional dip-coating technique into a thin homogeneous film of electronically coupled PbS QDs. Upon drying at 130 °C, (NH4)3AsS3 capping ligands were converted into a thin layer of As2S3, acting as an infrared-tr...

Dopants in nanowires, whether intentional or unintentional, can ultimately control the material’s properties and, therefore, need to be understood on the atomic scale. We study vapor−liquid−solid grown manganese-doped lead sulfide nanowires by atom-probe tomography for the first time for lead salt materials. The three-dimensional chemical concentration maps at the atomic scale demonstrate a rad...

Sulfide mineral dissolution is an important reaction controlling geochemical and environmental chemical processes in aqueous environments. In this study, we quantitatively evaluated the kinetic influence of galvanic interactions between different sulfide minerals on their seawater. Four hydrothermal sulfides with amounts Fe disulfide (pyrite) were reacted artificial seawater for 144 h, rates Zn...

Metal coated Hollow Glass Waveguides (HGWs) incorporating single dielectric thin films have been widely used for the low-loss transmission of infrared radiation in applications ranging from surgery to spectroscopy. While the incorporation of single dielectric film designs have traditionally been used in metal/dielectric coated HGWs, recent research has focused on the development of alternating ...

Fluorescence microscopy is a powerful enabling tool for biological discovery, albeit its effective penetration depth and resolving capacity are limited due to intense light scattering in living tissues. The recently introduced short-wave infrared cameras contrast agents featuring fluorescence emission the second near-infrared (NIR-II) window have extended achievable about 2 mm. However, spatial...

Recent developments in experimental solid state chemistry have offered us new possibilities in controlling synthesis routes, especially by varying the pressure and temperature. Similarly, the development of new theoretical methods and tools makes it worthwhile to reinvestigate apparently well-known systems. In this thesis several binary systems, in particular PbS and ZnO, have been investigated...