Investigation of crystallinity, electrical conductivity, and optical transmittance of Mg-doped CuCrO₂ deposited on buffer layer

Copper-based delafossite materials such as CuCrO₂ are promising candidates for application as p-type transparent conductive oxide because they have high optical transparency and high electrical conductivity. Here, we investigate how the crystallinity of the Mg-doped CuCrO₂ and the buffer layer affects both the transparency and conductivity of Mg-doped CuCrO₂. Our results show that the properties that are the transparency and the conductivity, correlate with the crystallinity of the materials. Furthermore, we find that the addition of the buffer layer enhances the formation of highly oriented CuCrO_2, making optimization of transparency and conductivity possible.