Extracting in Situ Charge Carrier Diffusion Parameters in Perovskite Solar Cells with Light Modulated Techniques
Impact
Scholar |
Other documents of the author: Bou, Agustín; A̅boliņš, Haralds; Ashoka, Arjun; Cruanyes, Héctor; Guerrero, Antonio; Deschler, Felix; Bisquert, Juan
Metadata
Show full item recordcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/160292
comunitat-uji-handle3:10234/160293
comunitat-uji-handle4:
INVESTIGACIONMetadata
Title
Extracting in Situ Charge Carrier Diffusion Parameters in Perovskite Solar Cells with Light Modulated TechniquesAuthor (s)
Date
2021-05-24Publisher
American Chemical SocietyISSN
2380-8195Bibliographic citation
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.1c00871Type
info:eu-repo/semantics/articlePublisher version
https://pubs.acs.org/doi/full/10.1021/acsenergylett.1c00871Version
info:eu-repo/semantics/publishedVersionSubject
Abstract
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. [-]
Is part of
ACS Energy Letters, 2021, vol. 6, no 6Funder Name
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
Project code
PID2019-107348GB-100 | 716471 | BES-2017-080351
Rights
info:eu-repo/semantics/openAccess
This item appears in the folowing collection(s)
- INAM_Articles [523]