Limited information of impedance spectroscopy about electronic diffusion transport: The case of perovskite solar cells
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Altres documents de l'autoria: Bou, Agustín; Pockett, Adam; Cruanyes, Héctor; Raptis, Dimitrios; Watson, Trystan; Carnie, Matt; Bisquert, Juan
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Limited information of impedance spectroscopy about electronic diffusion transport: The case of perovskite solar cellsAutoria
Data de publicació
2022Editor
American Institute of PhysicsISSN
2166-532XCita bibliogràfica
BOU, Agustín, et al. Limited information of impedance spectroscopy about electronic diffusion transport: The case of perovskite solar cells. APL Materials, 2022, vol. 10, núm. 5, p. 051104Tipus de document
info:eu-repo/semantics/articleVersió de l'editorial
https://pubs.aip.org/aip/apm/article/10/5/051104/2834948/Limited-information-of- ...Versió
info:eu-repo/semantics/publishedVersionParaules clau / Matèries
Resum
Impedance Spectroscopy (IS) has proven to be a powerful tool for the extraction of significant electronic parameters in a wide variety of
electrochemical systems, such as solar cells or electrochemical cells. However, ... [+]
Impedance Spectroscopy (IS) has proven to be a powerful tool for the extraction of significant electronic parameters in a wide variety of
electrochemical systems, such as solar cells or electrochemical cells. However, this has not been the case with perovskite solar cells, which
have the particular ionic-electronic combined transport that complicates the interpretation of experimental results due to an overlapping
of different phenomena with similar characteristic frequencies. Therefore, the diffusion of electrons is indistinguishable on IS, and there
appears the need to use other small perturbation experimental techniques. Here, we show that voltage-modulated measurements do not
provide the same information as light-modulated techniques. We investigate the responses of perovskite solar cells to IS, Intensity-Modulated
Photocurrent Spectroscopy (IMPS) and Intensity-Modulated Photovoltage Spectroscopy (IMVS). We find that the perturbations by light
instead of voltage can uncover the electronic transport from other phenomena, resulting in a loop in the high-frequency region of the complex
planes of the IMPS and IMVS spectra. The calculated responses are endorsed by the experimental data that reproduce the expected high
frequency loops. Finally, we discuss the requirement to use a combination of small perturbation techniques for successful estimation of
diffusion parameters of perovskite solar cells. [-]
Publicat a
APL Materials, 2022, vol. 10, núm. 5, p. 051104Entitat finançadora
Generalitat Valenciana | Ministerio de Ciencia e Innovación
Codi del projecte o subvenció
PROMETEO /2020/028 | BES-2017-080351 | PRE2020-095374
Drets d'accés
info:eu-repo/semantics/openAccess
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