Electrical equivalent circuit (EEC) based impedance spectroscopy analysis of HTM free perovskite solar cells

Ahmad, Zubair; Mishra, Arti; Abdulrahim, Sumayya M.; Touati, Farid

doi:10.1016/j.jelechem.2020.114294

Cited by 26 publications

(25 citation statements)

References 17 publications

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“…In this case, 2-RC element equivalent circuit models are required, as illustrated in Figure 5. This is usually the case at low potentials were the processes at the mesoporous layers are not evident [28,67]. At low potentials, the mesoporous layers in the PSCs act as insulators, and hence the recombination resistance is very high and merges into the curve.…”

Section: Electrical Equivalent Circuit Modelingmentioning

confidence: 98%

“…At low potentials, the mesoporous layers in the PSCs act as insulators, and hence the recombination resistance is very high and merges into the curve. However, at higher potentials, the mesoporous layers start behaving as conductors or semiconductors (depending on applied potential value) and hence their time constant is evident in the Nyquist plot, sometimes as a small arc in the low-frequency region or as a negative capacitance or as an appearance of an origin of negative capacitance [67]. Hence, the interpretation of the EIS data using the EEC analysis becomes very complicated due to multi-interfacial and ion diffusion processes.…”

Section: Electrical Equivalent Circuit Modelingmentioning

confidence: 99%

“…Nanomaterials 2020, 10, x FOR PEER REVIEW 12 of 23 However, Ahmed et al [67] performed a more detailed EEC-based EIS study for monolithic PSCs, where multiple EEC models were analyzed, and a well-defined model was recognized, which can be further modified based on the applied potentials (see Figure 6d). Monolithic PSCs (m-PSCs) were fabricated with a double mesoporous scaffold, m-TiO2 and ZrO2, and its EIS analysis was From this literature review, it is clear that the interpretation of the IF and LF region is complex and has still not been widely agreed upon.…”

Section: Proposed Eec Model Nyquist Plotmentioning

confidence: 99%

“…( d ) Electric current follows the diagram for m-PSCs under low, intermediate, and high potentials. Reproduced with permission from [ 67 ]. Elsevier, 2020.…”

Section: Figurementioning

confidence: 99%

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Electrochemical Impedance Spectroscopy Analysis of Hole Transporting Material Free Mesoporous and Planar Perovskite Solar Cells

et al. 2020

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The future photovoltaic technologies based on perovskite materials are aimed to build low tech, truly economical, easily fabricated, broadly deployable, and trustworthy solar cells. Hole transport material (HTM) free perovskite solar cells (PSCs) are among the most likely architectures which hold a distinctive design and provide a simple way to produce large-area and cost-effective manufacture of PSCs. Notably, in the monolithic scheme of the HTM-free PSCs, all layers can be printed using highly reproducible and morphology-controlled methods, and this design has successfully been demonstrated for industrial-scale fabrication. In this review article, we comprehensively describe the recent advancements in the different types of mesoporous (nanostructured) and planar HTM-free PSCs. In addition, the effect of various nanostructures and mesoporous layers on their performance is discussed using the electrochemical impedance spectroscopy (EIS) technique. We bring together the different perspectives that researchers have developed to interpret and analyze the EIS data of the HTM-free PSCs. Their analysis using the EIS tool, the limitations of these studies, and the future work directions to overcome these limitations to enhance the performance of HTM-free PSCs are comprehensively considered.

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Section: Electrical Equivalent Circuit Modelingmentioning

confidence: 98%

Section: Electrical Equivalent Circuit Modelingmentioning

confidence: 99%

Section: Proposed Eec Model Nyquist Plotmentioning

confidence: 99%

“…( d ) Electric current follows the diagram for m-PSCs under low, intermediate, and high potentials. Reproduced with permission from [ 67 ]. Elsevier, 2020.…”

Section: Figurementioning

confidence: 99%

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Electrochemical Impedance Spectroscopy Analysis of Hole Transporting Material Free Mesoporous and Planar Perovskite Solar Cells

et al. 2020

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“…Thus, a common approach is to combine series and/or parallel arrays of passive components (resistor and capacitors), constant phase elements (CPE) and/or Warburg elements to correlate the measured data with the electrochemical processes involved, including the charge transfer resistance, R CT (Figure 2B) as the interfacial charge transport, mass transfer or both behaviours can explain the interfacial charge transport process and the role of contacts quantitatively by using the electrical equivalent circuit (EEC) [22]. Although the suitability of a measurement model for extracting parameters from EIS experimental data depends on the nature of the electrochemical process, Liao et al [23] argue that a CPE may not represent distributed-time constant behaviours and therefore the use of a measurement model offers advantages for obtaining low-and high-frequency ohmic resistances.…”

Section: Basic Electrochemical Electrical Equivalent Circuit (Eec) Modelsmentioning

confidence: 99%

Experimental Study of Electrical Properties of Pharmaceutical Materials by Electrical Impedance Spectroscopy

et al. 2020

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The physicochemical characterization of pharmaceutical materials is essential for drug discovery, development and evaluation, and for understanding and predicting their interaction with physiological systems. Amongst many measurement techniques for spectroscopic characterization of pharmaceutical materials, Electrical Impedance Spectroscopy (EIS) is powerful as it can be used to model the electrical properties of pure substances and compounds in correlation with specific chemical composition. In particular, the accurate measurement of specific properties of drugs is important for evaluating physiological interaction. The electrochemical modelling of compounds is usually carried out using spectral impedance data over a wide frequency range, to fit a predetermined model of an equivalent electrochemical cell. This paper presents experimental results by EIS analysis of four drug formulations (trimethoprim/sulfamethoxazole C14H18N4O3-C10H11N3O3, ambroxol C13H18Br2N2O.HCl, metamizole sodium C13H16N3NaO4S, and ranitidine C13H22N4O3S.HCl). A wide frequency range from 20 Hz to 30 MHz is used to evaluate system identification techniques using EIS data and to obtain process models. The results suggest that arrays of linear R-C models derived using system identification techniques in the frequency domain can be used to identify different compounds.

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Beyond Protocols: Understanding the Electrical Behavior of Perovskite Solar Cells by Impedance Spectroscopy

Ghahremanirad

Almora

Drew

et al. 2023

Advanced Energy Materials

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Impedance spectroscopy (IS) is an effective characterization technique used to probe and distinguish charge dynamics occurring at different timescales in optoelectronic and electric devices. With the rapid rise of research being conducted on perovskite solar cells (PSCs), IS has significantly contributed to the understanding of their device performance and degradation mechanisms, including metastable effects such as current–voltage hysteresis. The ionic–electronic behavior of PSCs and the presence of a wide variety of perovskite compositions and cell architectures add complexity to the accurate interpretation of the physical processes occurring in these devices. In this review, the most common IS protocols are explained to help perform accurate impedance measurements on PSC devices. It critically reviews the most commonly used equivalent circuits alongside drift‐diffusion modeling as a complementary technique to analyze the impedance response of PSCs. As an emerging method for characterizing the interfacial recombination between the perovskite layer and selective contacts, light intensity modulated impedance spectroscopy technique is further discussed. Lastly, important works on the application of IS measurement protocols for PSCs are summarized followed by a detailed discussion, providing a critical perspective and outlook on the growing topic of IS on PSCs.

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Electrical equivalent circuit (EEC) based impedance spectroscopy analysis of HTM free perovskite solar cells

Cited by 26 publications

References 17 publications

Electrochemical Impedance Spectroscopy Analysis of Hole Transporting Material Free Mesoporous and Planar Perovskite Solar Cells

Electrochemical Impedance Spectroscopy Analysis of Hole Transporting Material Free Mesoporous and Planar Perovskite Solar Cells

Experimental Study of Electrical Properties of Pharmaceutical Materials by Electrical Impedance Spectroscopy

Beyond Protocols: Understanding the Electrical Behavior of Perovskite Solar Cells by Impedance Spectroscopy

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