Fe(III) doped and grafted PbTiO{sub 3} film photocathode with enhanced photoactivity for hydrogen production
- College of Physics, Optoelectronics and Energy and Collaborative Innovation Center of Suzhou Nano Science and Technology and Jiangsu Key Laboratory of Thin Films, Soochow University, 1 Shizi Street, Suzhou 215006 (China)
The photoelectrochemical activity of the PbTiO{sub 3} film photocathode deposited on indium tin oxide-coated quartz substrate was significantly improved through modifying the film surface by both the Fe(III) doping and grafting. Doping the PbTiO{sub 3} with Fe(III) ions narrows its band gap thus increases the visible light utilization, while the surface-grafted Fe(III) ions on the doped PbTiO{sub 3} surface are helpful to improve the charge transfer on the photocathode/electrolyte interface. Consequently, the photocurrent was increased from 38 μA/cm{sup 2} to 220 μA/cm{sup 2} under the irradiation of 100 mW/cm{sup 2} Xe lamp by using 0.1M Na{sub 2}SO{sub 4} as an electrolyte and zero-potential versus saturated calomel as a reference electrode. The corresponding increase in open circuit voltage was 0.95–1.11 V.
- OSTI ID:
- 22310963
- Journal Information:
- Applied Physics Letters, Vol. 105, Issue 8; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
Similar Records
Dye-sensitized photocathodes for oxygen reduction: efficient H 2 O 2 production and aprotic redox reactions
Rapid Flame-Annealed CuFe2O4 as Efficient Photocathode for Photoelectrochemical Hydrogen Production