Construction of Ru/BWO photoanode for efficient photoelectrochemical water splitting via ohmic contact
Year: 2024
Type: article
Abstract: Photoelectrochemical (PEC) water splitting is regarded as a promising approach for future environmental remediation and energy conversion. Therefore, the selection and preparation of appropriate photoelectrode anode materials are critical for achieving efficient PEC water decomposition. In this study, the photocurrent density of Ru/BWO photoelectrodes, prepared through a hydrothermal method combined with annealing, is 25 times greater than that of BWO at 1.23 V RHE . Photoelectrochemical tests and first-principles calculations reveal that the PEC performance is significantly enhanced by exploiting the difference in work function , which facilitates the formation of an Ohmic contact between Ru and BWO. This, in turn, leads to charge redistribution at the Ru/BWO interface, generating an inbuilt electric field (IEF) that drives the separation and rapid transfer of photogenerated carriers. The modulation of interfacial charge transfer through the formation of Ohmic contacts between the metal and semiconductor, resulting in the generation of an IEF, is of great importance for the design of highly efficient photoanodes .
Source: Journal of Alloys and Compounds
Institution: Shaanxi University of Science and Technology
Language: English
Field: Energy
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $3,550
Award: G5349142383
OpenAlex ID: W4405760928