P06: Optical Properties of CuI, Doped CuI and CuI-Based Alloys
Dr. Chris Sturm
Although cuprous iodide (CuI) films and crystals were fabricated already almost 100 years ago, the optical
properties are rarely investigated, especially its dielectric function and the related polarizabilities as well
as the origin and nature of the emission channels. In this project, the optical properties of CuI films and
microcrystals will be investigated by means of Raman spectroscopy, spectroscopic ellipsometry as well
as time-integrated and time-resolved photoluminescence spectroscopy. The dielectric function of CuI and
related materials will be investigated. The assignment and the nature of the determined transitions of the
dielectric function will be compared with those obtained by theoretical band structure calculations. A
comparison of the phonon properties and the near bandgap luminescence of differently intentionally doped
CuI samples as well as alloyed CuI-based materials with each other will be used in order to identify the
chemical origin of impurity related recombination channels and phonon modes.
