EKC2023

Sputter-deposited Zr-Fe2O3 nano-photoanodes for enhanced photoelectrochemical water splitting

Aug 17, 2023, 1:00 PM

20m

Orion 2

Basic Science [BS4] Researches at Large-Scale Facilities

Speaker

Hyun Hwi Lee (Pohang Accelerator Lab (PAL), POSTECH)

Description

Surface modification and doping of hematite nanorods (NRs) for enhanced photoelectrochemical (PEC) water splitting was developed using a sputtering method. The ZrOx/β-FeOOH NRs were fabricated by the Zr sputter deposition and its amount was controlled by sputter time. The NRs were followed by 800 ◦C quenching to develop Zr-Fe2O3 nano-photoanodes and the nanorods were vertically oriented along the [110] direction. Donor densities and charge transfer properties and were improved for Zr-Fe2O3 NRs photoanode and a highest photocurrent density of 1.23 mA/cm2 at 1.23 V vs. (RHE) was achieved.

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