Extracting in Situ Charge Carrier Diffusion Parameters in Perovskite Solar Cells with Light Modulated Techniques
Impacto
Scholar |
Otros documentos de la autoría: Bou, Agustín; A̅boliņš, Haralds; Ashoka, Arjun; Cruanyes, Héctor; Guerrero, Antonio; Deschler, Felix; Bisquert, Juan
Metadatos
Mostrar el registro completo del ítemcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/160292
comunitat-uji-handle3:10234/160293
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INVESTIGACIONMetadatos
Título
Extracting in Situ Charge Carrier Diffusion Parameters in Perovskite Solar Cells with Light Modulated TechniquesAutoría
Fecha de publicación
2021-05-24Editor
American Chemical SocietyISSN
2380-8195Cita bibliográfica
Bou, A.; A̅boliņš, H.; Ashoka, A.; Cruanyes, H.; Guerrero, A.; Deschler, F.; Bisquert, J. Charge-Extracting in Situ Charge Carrier Diffusion Parameters in Perovskite Solar Cells with Light Modulated Techniques. ACS Energy Lett. 2021, 6, 6, 2248–2255, DOI:10.1021/acsenergylett.1c00871Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
https://pubs.acs.org/doi/full/10.1021/acsenergylett.1c00871Versión
info:eu-repo/semantics/publishedVersionPalabras clave / Materias
Resumen
Frequency resolved methods are widely used to determine device properties of perovskite solar cells. However, obtaining the electronic parameters for diffusion and recombination by impedance spectroscopy has been so ... [+]
Frequency resolved methods are widely used to determine device properties of perovskite solar cells. However, obtaining the electronic parameters for diffusion and recombination by impedance spectroscopy has been so far elusive, since the measured spectra do not present the diffusion of electrons. Here we show that intensity modulated photocurrent spectroscopy (IMPS) displays a high frequency spiraling feature determined by the diffusion-recombination constants, under conditions of generation of carriers far from the collecting contact. We present models and experiments in two different configurations: the standard sandwich-contacts solar cell device and the quasi-interdigitated back-contact (QIBC) device for lateral long-range diffusion. The results of the measurements produce the hole diffusion coefficient of Dp = 0.029 cm2/s and lifetime of τp = 16 μs for one cell and Dp = 0.76 cm2/s and τp = 1.6 μs for the other. The analysis in the frequency domain is effective to separate the carrier diffusion (at high frequency) from the ionic contact phenomena at a low frequency. This result opens the way for a systematic determination of transport and recombination features in a variety of operando conditions. [-]
Publicado en
ACS Energy Letters, 2021, vol. 6, no 6Entidad financiadora
Ministerio de Ciencia y Innovación | European Research Council (ERC) | Cambridge Trust | Inlaks Shivdasani Foundation | Engineering & Physical Sciences Research Council (EPSRC) | Winton Programme for the Physics of Sustainability | DFG Emmy Noether Program
Código del proyecto o subvención
PID2019-107348GB-100 | 716471 | BES-2017-080351
Derechos de acceso
info:eu-repo/semantics/openAccess
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