5. Glossary

nanomaterial; nanomaterial

Material with at least one dimension smaller than 100 nm and whose properties are modified as a result.

luminescence; luminescence

Light emission resulting from the de-excitation of a charged particle (electron or hole).

CIGS; Copper Indium Gallium Selenide

Semiconductor alloy with the chemical formula Culn _x Ga _(1-x) Se ₂ . Its energy band gap can be varied from 1 eV to &, 7 eV depending on the value of x.

Down conversion ; down conversion

Emission of photons with lower energies and therefore longer wavelengths than the photons used for excitation. The...