Single-atomic-site platinum steers photogenerated charge carrier lifetime of hematite nanoflakes for photoelectrochemical water splitting
Inner Mongolia University · National Institute of Advanced Industrial Science and Technology · +4 more institutions
Abstract
Abstract Although much effort has been devoted to improving photoelectrochemical water splitting of hematite (α-Fe 2 O 3 ) due to its high theoretical solar-to-hydrogen conversion efficiency of 15.5%, the low applied bias photon-to-current efficiency remains a huge challenge for practical applications. Herein, we introduce single platinum atom sites coordination with oxygen atom (Pt-O/Pt-O-Fe) sites into single crystalline α-Fe 2 O 3 nanoflakes photoanodes (SAs Pt:Fe 2 O 3 -Ov). The single-atom Pt doping of α-Fe 2 O 3 can induce few electron trapping sites, enhance carrier separation capability, and boost charge transfer lifetime in the bulk structure as well as improve charge carrier injection efficiency at…
Citation impact
- FWCI
- 13.04
- Percentile
- 100%
- References
- 64
Authors
8Topics & keywords
- Water splitting
- Charge carrier
- Hematite
- Materials science
- Photoelectrochemistry
- Semiconductor
- Photoelectrochemical cell
- Doping
- Affordable and clean energy