Speaker
Joachim Breternitz
(Helmholtz-Zentrum Berlin für Materialien und Energie)
Description
Alternative photovoltaic absorbers often suffer from scarce and/or toxic components. Herein, we look at the model system Zn$_{1+x}$Ge$_{1-x}$(O$_x$N$_{1-x}$)$_2$, which we studied in detail using Neutron diffraction, chemical analyses and UV-VIS measurements. We show that two independent ways of cation disorder exist: one related to the chemical composition and one based on antisite defects. Despite being independent, both disorder types affect the optical bandgap energies similarly.
Primary author
Joachim Breternitz
(Helmholtz-Zentrum Berlin für Materialien und Energie)
Co-authors
Mr
Zhenyu Wang
(Helmholtz-Zentrum Berlin für Materialien und Energie)
Dr
Stanislav Savvin
(Institut Laue-Langevin)
Susan Schorr
(Helmholtz-Zentrum Berlin für Materialien und Energie)
