Extracting in Situ Charge Carrier Diffusion Parameters in Perovskite Solar Cells with Light Modulated Techniques
Impacte
Scholar |
Altres documents de l'autoria: Bou, Agustín; A̅boliņš, Haralds; Ashoka, Arjun; Cruanyes, Héctor; Guerrero, Antonio; Deschler, Felix; Bisquert, Juan
Metadades
Mostra el registre complet de l'elementcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/160292
comunitat-uji-handle3:10234/160293
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INVESTIGACIONMetadades
Títol
Extracting in Situ Charge Carrier Diffusion Parameters in Perovskite Solar Cells with Light Modulated TechniquesAutoria
Data de publicació
2021-05-24Editor
American Chemical SocietyISSN
2380-8195Cita bibliogràfica
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.1c00871Tipus de document
info:eu-repo/semantics/articleVersió de l'editorial
https://pubs.acs.org/doi/full/10.1021/acsenergylett.1c00871Versió
info:eu-repo/semantics/publishedVersionParaules clau / Matèries
Resum
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. [-]
Publicat a
ACS Energy Letters, 2021, vol. 6, no 6Entitat finançadora
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
Codi del projecte o subvenció
PID2019-107348GB-100 | 716471 | BES-2017-080351
Drets d'accés
info:eu-repo/semantics/openAccess
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