Copper-doped semiconductors are classic phosphor materials that have been used in a
variety of applications for many decades. Colloidal copper-doped semiconductor …

Artificial photosynthesis via solar water splitting provides a promising approach to storing
solar energy in the form of hydrogen on a global scale. However, an efficient and cost …

This first comprehensive description of the most important material properties and device
aspects closes the gap between general books on solar cells and journal articles on …

We report an efficient synthesis of copper indium sulfide nanocrystals with strong
photoluminescence in the visible to near-infrared. This method can produce gram quantities …

Silicon is ubiquitous in contemporary technology. The most stable form of silicon at ambient
conditions takes on the structure of diamond (cF8, d-Si) and is an indirect bandgap …

The knowledge of the quantum dot (QD) concentration in a colloidal suspension and the
quantitative understanding of the size-dependence of the band gap of QDs are of crucial …

Colloidal nanocrystals of ternary I–III–VI2 semiconductors are emerging as promising
alternatives to Cd-and Pb-chalcogenide nanocrystals because of their inherently lower …

We summarize the progress made recently in understanding the electronic structure of
chalcopyrites. New insights into the dispersion of valence and conduction band allow …

Optical constants of polycrystalline thin film CuIn 1− x Ga x Se 2 alloys with Ga/(Ga+ In)
ratios from 0 to 1 have been determined by spectroscopic ellipsometry over an energy range …

Thin-film solar cells based on polycrystalline absorbers have reached very high conversion
efficiencies of up to 23-25%. In order to elucidate the limiting factors that need to be …