ฮฒ-Bi2O3 Thin Films for PEC Photodetection Performance | #sciencefather #researchaward
High-Performance PEC-Type Photodetectors: The Role of $\beta$ -Bi2O3 Thin Films The demand for high-sensitivity, self-powered, and environmentally stable ultraviolet-visible (UV-Vis) light detection has driven significant research into the photoelectrochemical (PEC) properties of metal oxide semiconductors. Among these, Bismuth Oxide ( $\text{Bi}_2\text{O}_3$ ) has emerged as a standout candidate due to its diverse polymorphs and tunable electronic properties. Specifically, the meta-stable $\beta$ -phase of $\text{Bi}_2\text{O}_3$ offers a unique combination of a narrow bandgap and high charge carrier mobility, making it an ideal candidate for PEC-type photodetection. Phase Control and Synthesis Challenges Bismuth oxide exists in several crystallographic phases ( $\alpha, \beta, \gamma, \delta, \text{ and } \omega$ ), with the monoclinic $\alpha$ -phase being the most stable at room temperature. However, for optoelectronic applications, the tetragonal $\beta$ -phase is often pre...