New Views on Carrier Diffusion and Recombination by Combining Small Perturbation Techniques: Application to BiVO4 Photoelectrodes

# Dataset of “ New Views on Carrier Diffusion and Recombination by Combining Small Perturbation Techniques: Application to BiVO4 Photoelectrodes”

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## GENERAL INFORMATION

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1. Dataset title: “New Views on Carrier Diffusion and Recombination by Combining Small Perturbation Techniques: Application to BiVO4 Photoelectrodes”

2. Authorship:  

    Name: Agustín O. Alvarez  

    Institution: Institute of Advanced Materials (INAM), Universitat Jaume I, 12006 Castelló, Spain

    Email:

    ORCID:0000-0002-0920-5390

    Name: Miguel Garcia-Tecedor

    Institution: Photoactivated Processes Unit, IMDEA Energy Institute, Parque Tecnológico de Móstoles, 28935 Móstoles, Madrid, Spain;

    ORCID: 0000-0002-9664-4665

    Name: Laura Montañés 

    Institution: Institute of Advanced Materials (INAM), Universitat Jaume I, 12006 Castelló, Spain;

    ORCID: 0000-0002-1076-013X

    Name: Elena Más-Marzá

    Institution: Institute of Advanced Materials (INAM), Universitat Jaume I, 12006 Castelló, Spain

    ORCID: 0000-0002-2308-0635

    Name: Sixto Giménez

    Institution: Institute of Advanced Materials (INAM), Universitat Jaume I, 12006 Castelló, Spain

    ORCID: 0000-0002-4522-3174

    Name: Francisco Fabregat Santiago

    Institution: Institute of Advanced Materials (INAM), Universitat Jaume I, 12006 Castelló, Spain

    Email:

    ORCID: 0000-0002-7503-1245

## FILE DESCRIPTION

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### Figure 3

-Fig3.txt : Cyclic voltammetry curves of a Zr:BiVO4 electrode used in water-splitting photoelectrochemical cell: without illumination (black line) and 89 mW cm 1 of blue light (blue lines); from the ES, continues lines, and the HS, dashed lines. IS, IMPS, and IMVS are measured under the same illumination conditions and at 1.2 V versus RHE (gray line).

### Figure 4

-Fig4a.txt : IS (with their respective zooms) measurement results (solid black circles) of a Zr:BiVO4 electrochemical cell illuminated from the HS. The blue lines represent the simultaneous fittings of each set of measurements (IS, IMPS, and IMVS), with the EC in Figure 2a. The measurements were performed at 89 mW cm 2 blue light (470 nm) and 1.2 V versus RHE. The frequency range is, in all the spectra, from 5 kHz to 1 Hz.

-Fig4b.txt : The spectra in b shows the corresponding measurements for ES illumination. The blue lines represent the simultaneous fittings of each set of measurements (IS, IMPS, and IMVS), with the EC in Figure 2a. The measurements were performed at 89 mW cm 2 blue light (470 nm) and 1.2 V versus RHE. The frequency range is, in all the spectra, from 5 kHz to 1 Hz.

-Fig4c.txt : IMPS (with their respective zooms) measurement results (solid black circles) of a Zr:BiVO4 electrochemical cell illuminated from the HS. The blue lines represent the simultaneous fittings of each set of measurements (IS, IMPS, and IMVS), with the EC in Figure 2a. The measurements were performed at 89 mW cm 2 blue light (470 nm) and 1.2 V versus RHE. The frequency range is, in all the spectra, from 5 kHz to 1 Hz.

-Fig4d.txt : The spectra in d shows the corresponding measurements for ES illumination. The blue lines represent the simultaneous fittings of each set of measurements (IS, IMPS, and IMVS), with the EC in Figure 2a. The measurements were performed at 89 mW cm 2 blue light (470 nm) and 1.2 V versus RHE. The frequency range is, in all the spectra, from 5 kHz to 1 Hz.

-Fig4e.txt : IMVS (with their respective zooms) measurement results (solid black circles) of a Zr:BiVO4 electrochemical cell illuminated from the HS. The blue lines represent the simultaneous fittings of each set of measurements (IS, IMPS, and IMVS), with the EC in Figure 2a. The measurements were performed at 89 mW cm 2 blue light (470 nm) and 1.2 V versus RHE. The frequency range is, in all the spectra, from 5 kHz to 1 Hz.

-Fig4f.txt : The spectra in f shows the corresponding measurements for ES illumination. The blue lines represent the simultaneous fittings of each set of measurements (IS, IMPS, and IMVS), with the EC in Figure 2a. The measurements were performed at 89 mW cm 2 blue light (470 nm) and 1.2 V versus RHE. The frequency range is, in all the spectra, from 5 kHz to 1 Hz.

### Figure S2

-FigS2.txt : Cyclic voltammetry curves of a Zr:BiVO4 electrode used in water splitting photoelectrochemical cell: without illumination (black line), illuminating with 1 sun (yellow lines) and 89 mW cm-1 of blue light (blue lines); from the electron-collector side (ES, continues lines) and the hole-collector side (HS, dashed lines). IS, IMPS and IMVS are measured under the same blue illumination conditions and at 1.2 V vs RHE (grey line).

### Figure S3

-FigS3.txt : bsorptance (black line), reflectance (read and cyan dashed line) and transmittance (green dashed line) of the Zr:BiVO4, where ES and HS refer to the illumination incidence. The absorbance of the FTO (yellow dashed line), the transmittance of the quartz cuvette (purple dashed line) and the emission peak of the LED used to measure IS, IMPS and IMVS (blue line).