Band Gap Tuning of Solution-Processed Ferroelectric Perovskite BiFe_1-x Co _x O₃ Thin Films.

ABSTRACT: Ferroelectric perovskite oxides are emerging as a promising photoactive layer for photovoltaic applications because of their very high stability and their alternative ferroelectricity-related mechanism for solar energy conversion that could lead to extraordinarily high efficiencies. One of the biggest challenges so far is to reduce their band gap toward the visible region while simultaneously retaining ferroelectricity. To address these two issues, herein an elemental composition engineering of BiFeO₃ is performed by substituting Fe by Co cations, as a means to tune the characteristics of the transition metal-oxygen bond. We demonstrate by solution processing the formation of epitaxial, pure phase, and stable BiFe_1-x Co _x O₃ thin fi

SUBMITTER: Machado P 

PROVIDER: S-EPMC6388762 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature