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The journal of physical chemistry letters, 2021-08, Vol.12 (33), p.7964-7971
2021

Details

Autor(en) / Beteiligte
Titel
From Frequency Domain to Time Transient Methods for Halide Perovskite Solar Cells: The Connections of IMPS, IMVS, TPC, and TPV
Ist Teil von
  • The journal of physical chemistry letters, 2021-08, Vol.12 (33), p.7964-7971
Ort / Verlag
American Chemical Society
Erscheinungsjahr
2021
Link zum Volltext
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
  • The correlation of different methods of measurement can become an important tool to identify the dominant physical elements that govern the electronic and ionic dynamics in perovskite solar cells. The diverse phenomena underlying the response of halide perovskite materials to different stimuli are reflected in time-domain measurements, where transients appear with time scales spanning orders of magnitude, from nanoseconds to hours. We discuss the connection between different frequency- and time-domain methods to probe the voltage and current response of halide perovskite solar cells to different small perturbations. To solve the frequency-to-time transformation, we start from models of the transfer function of intensity-modulated photocurrent spectroscopy (IMPS) and derive the associated impulse response function, the transient photocurrent (TPC), in response to a short light pulse. Similarly, we determine the transient photovoltage (TPV) starting from the intensity-modulated photovoltage spectroscopy (IMVS) transfer function. We also discuss the open-circuit voltage decays (OCVD). We first show the response of simple equivalent circuit models, and then we treat the full model for generation–diffusion–recombination of electrons that shows a spiraling loop in IMPS. This model gives rise to overshoots in the time domain.
Sprache
Englisch; Norwegisch
Identifikatoren
ISSN: 1948-7185
eISSN: 1948-7185
DOI: 10.1021/acs.jpclett.1c02065
Titel-ID: cdi_cristin_nora_10852_89188
Format
Schlagworte
Letter

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