Optical Absorption and Carrier Dynamics of Semiconductor Delafossites.
POSTER
Abstract
Delafossites semiconductor oxides (ABO$_{\mathrm{2}})$ are being considered for wide range of photovoltaic and photocatalytic applications. In ternary crystals the fundamental band gap is forbidden, whereas addition of second B site ion breaks inversion symmetry and allows the transition to occur. In this study, optical absorption, photoconductivity and transient absorption are used to investigate the carrier dynamics of delafossites CuGaO$_{\mathrm{2\thinspace }}$and related CuGa$_{\mathrm{1-x}}$Fe$_{\mathrm{x}}$O$_{\mathrm{2\thinspace }}$(with 0.00 $\le $ x $\le $ 0.05) alloys for potential applications.