Impedance spectroscopy on degradation analysis of polymer/fullerene solar cells

Gupta, Shailendra Kumar; Pali, L. Sowjanya; Garg, Ashish

doi:10.1016/j.solener.2018.12.024

Cited by 30 publications

(17 citation statements)

References 49 publications

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“…is defect could also explain the raison for reaching low conversion efficiency. Similar behavior was observed by Gupta et al [13] in their study on degradation analysis of polymer/fullerene solar cells due to do formation of Al 2 O 3 , the interface between aluminium and polymer.…”

Section: Electrochemical Impedance Spectroscopy (Eis)supporting

confidence: 85%

“…is circuit includes position independent distributed circuit elements relating to the transport resistance (R t � R 1 ), recombination resistance (R rec � R 2 ), and chemical capacitance (CPE: constant phase element) that are accounting for the homogeneous charge carrier transport, electron hole recombination, and capacitance per unit area due to charge accumulation associated with ITO/ZnO/CdS/CuO:Co/Ag, respectively [13]. An additional resistance (R s ) appears in the equivalent circuit attributed to the additional contribution of the series resistance.…”

Section: Electrochemical Impedance Spectroscopy (Eis)mentioning

confidence: 99%

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Investigation of the Optical and Electrical Properties of ITO/ZnO/CdS/CuO:Co/Ag Structure for Solar Cell

Nkhaili

Narjis

Outzourhit

et al. 2020

Advances in Materials Science and Engineering

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In this work, a new structure ITO/n-ZnO/n-CdS/p-CuO:Co/Ag for solar cell was prepared on a glass/ITO substrate. The RF sputtering was used to deposit the window layer (n-ZnO) at different time periods in order to reach various thickness of this film. The n-CdS thin films were synthesized by sol-gel technique to reduce the energy bands. The buffer layer (p-CuO:Co) was sputtered at 200 W, under 30% of oxygen. Then, the electrode (Ag) with a thickness of 100 nm was deposited by thermal evaporation under a pressure of 10−5 mbar. The photovoltaic activity results obtained from this structure showed that the above method is more relevant to achieve such structure. The electrical properties of this structure were investigated using the current-voltage (I-V) and AC impedance complex measurements. The values of open circuit voltage (Voc), short-circuit current (Jsc), and fill factor (FF) are 0.46 V, 4.1 mA cm−2, and 30%, respectively. The analysis of complex impedance measurements was very useful to investigate the electrical behavior of n-ZnO/n-CdS and n-CdS/p-CuO:Co interfaces. The impedance data are presented in the Nyquist and Bode plots at different thicknesses of the n-ZnO films. An equivalent circuit was used to analyze and to fit the experimental data. The validity of these fitting results is further supported by the extrapolation and the deconvolution of both process of the diffusion and recombination processes at the n-ZnO/n-CdS and n-CdS/p-CuO:Co interfaces, respectively. Our finding could provide an efficient method for fabricating a new configuration for improving the efficiency of inorganic ZnO/CuO solar cells as well as a useful approach for the analysis of complex impedance measurements. Further works are in progress in order to better improve the conversion efficiency.

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Section: Electrochemical Impedance Spectroscopy (Eis)supporting

confidence: 85%

Section: Electrochemical Impedance Spectroscopy (Eis)mentioning

confidence: 99%

Investigation of the Optical and Electrical Properties of ITO/ZnO/CdS/CuO:Co/Ag Structure for Solar Cell

Nkhaili

Narjis

Outzourhit

et al. 2020

Advances in Materials Science and Engineering

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“…Solid lines correspond to the fits using the equivalent electrical circuit of the inset (Matryoshka circuit). This circuital model has been widely used in previous works 5,6 and consists of a series resistance R S (associated with ohmic losses at soldering and external wires), a recombination resistance R P , a transport resistance R T , a geometrical capacitance C g , and a constant phase element (CPE) with impedance, Z CPE ( j )…”

Section: Resultsmentioning

confidence: 99%

Identification of Degradation Mechanisms in Slot-Die-Coated Nonfullerene ITO-Free Organic Solar Cells Using Different Illumination Spectra

Arredondo

Pozo

Hernández‐Balaguera

et al. 2020

ACS Appl. Energy Mater.

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We compare pristine and degraded samples that were subjected to outdoor degradation following standard ISOS-O2 protocol. The ideality factors for different incident wavelengths obtained from open circuit voltage versus irradiation level and current density-voltage (J-V) measurements at different temperatures, indicate that for aged samples recombination is governed by Shockley-Red-Hall mechanism occurring in a region near the anode. Samples were also characterized using impedance spectroscopy and fitted to an electrical model. Impedance parameters were used to obtain mobility, indicating a clear degradation of the active layer blend for aged samples. The change in the chemical capacitance also reveals a worsening in carrier extraction. Finally, 2D numerical simulations and fits to experimental J-V curves confirm the existence of a layer near the anode contact with poorer mobility and a decrease of the anode work function for the degraded samples.

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“…The frequency dependent measurements aid to explain the several mechanisms occurring at several interfaces. 57 Thus, the interface state will be distinguished more easily by IS than by TPV, in which all charges are forced to recombine.…”

Section: Impedance Spectroscopy Analysismentioning

confidence: 99%

Shelf lifetime analysis of organic solar cells combining frequency and time resolved techniques

Torimtubun

Méndez

Sánchez

et al. 2021

Sustainable Energy Fuels

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Impedance spectroscopy on degradation analysis of polymer/fullerene solar cells

Cited by 30 publications

References 49 publications

Investigation of the Optical and Electrical Properties of ITO/ZnO/CdS/CuO:Co/Ag Structure for Solar Cell

Investigation of the Optical and Electrical Properties of ITO/ZnO/CdS/CuO:Co/Ag Structure for Solar Cell

Identification of Degradation Mechanisms in Slot-Die-Coated Nonfullerene ITO-Free Organic Solar Cells Using Different Illumination Spectra

Shelf lifetime analysis of organic solar cells combining frequency and time resolved techniques

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