Bi Doped Sb<sub>2</sub>S<sub>3</sub> Thin Film Synthesized by a Two-Step Approach with Enhanced Photoelectrochemical Water Splitting Performance
Zhiqiang Wang, Lubing Li, Liu Hong, Xiaobo Shi, Yumeng Lu, Jinzhan Su
Abstract
Photoelectrochemical water splitting (PEC) is believed as a promising approach to address the energy and environmental crisis. Here, we adopted a simple two-step method to synthesize bare Sb 2 S 3 film, and then employed a Bi element doping strategy to improve the PEC performance of obtained bare Sb 2 S 3 . The obtained Bi-Sb 2 S 3 exhibited an increased photocurrent density, 2.8 mA cm −2 at 1.23 V RHE and a negative shift of onset potential, compared to bare Sb 2 S 3 . The enhancement in PEC performance of Bi-Sb 2 S 3 could be attributed to the expanded light absorption range, increased electron carrier concentration and improved charge transfer ability.
Topics & Concepts
PhotocurrentWater splittingDopingMaterials scienceAbsorption (acoustics)Analytical Chemistry (journal)Range (aeronautics)OptoelectronicsCharge carrierNanotechnologyChemistryPhotocatalysisCatalysisComposite materialChromatographyBiochemistryAdvanced Photocatalysis TechniquesChalcogenide Semiconductor Thin FilmsCopper-based nanomaterials and applications