New Views on Carrier Diffusion and Recombination by Combining Small Perturbation Techniques: Application to BiVO4 Photoelectrodes
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Show full item recordcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/160292
comunitat-uji-handle3:10234/160293
comunitat-uji-handle4:
INVESTIGACIONMetadata
Title
New Views on Carrier Diffusion and Recombination by Combining Small Perturbation Techniques: Application to BiVO4 PhotoelectrodesAuthor (s)
Date
2022Publisher
WileyBibliographic citation
ALVAREZ, Agustin O., et al. New Views on Carrier Diffusion and Recombination by Combining Small Perturbation Techniques: Application to BiVO4 Photoelectrodes. Solar RRL, 2022, p. 2200826.Type
info:eu-repo/semantics/articlePublisher version
WileyVersion
info:eu-repo/semantics/publishedVersionAbstract
Impedance spectroscopy (IS), intensity-modulated photocurrent spectroscopy (IMPS), and intensity-modulated photovoltage spectroscopy (IMVS) are well-established powerful modulated techniques to characterize optoelec ... [+]
Impedance spectroscopy (IS), intensity-modulated photocurrent spectroscopy (IMPS), and intensity-modulated photovoltage spectroscopy (IMVS) are well-established powerful modulated techniques to characterize optoelectronic devices. Their combined use has proven to provide an understanding of the behavior and performance of these systems, far beyond the output obtained from their independent analysis. However, this combination is shown to be challenging when applied to complex systems. Herein, IS, IMPS, and IMVS are cooperatively used, for the first time, to study the distributed photogeneration, diffusion, and recombination processes in a photoanode of zircon-doped bismuth vanadate. The use of this methodology reveals that the carriers that determine the response of the device are the electrons when the device is illuminated from the hole-collector side (electrolyte) and the holes when the illumination reaches the device from the electron-collector side. Detailed quantitative information is obtained for each carrier, including recombination lifetime, diffusion coefficient and collectrion and separation efficiencies, identifying the latter as the main limitation of this device. This methodology is a powerful tool that can be used for the characterization and understanding of the operating processes of other photoconversion devices. [-]
Is part of
Solar RRL 2022, 6, 2200826Funder Name
Agencia Estatal de Investigación | Generalitat Valenciana | Universitat Jaume I
Project code
PID2020-116093RB-C41
Project title or grant
PROMETEO/2020/028
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info:eu-repo/semantics/openAccess
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