Optimizing CuO p-type dye-sensitized solar cells by using a comprehensive electrochemical impedance spectroscopic study

Langmar O, Ganivet CR, De La Torre G, Torres T, Costa RD, Guldi DM (2016)

Publication Type: Journal article

Publication year: 2016

Journal

Nanoscale Royal Society of Chemistry

Book Volume: 8

Pages Range: 17963-17975

Journal Issue: 41

DOI: 10.1039/C6NR05507A

Abstract

We introduce a novel and comprehensive approach for the evaluation and interpretation of electrochemical impedance spectroscopy (EIS) measurements in p-type DSSCs. In detail, we correlate both the device performance and EIS figures-of-merit of a series of devices in which, the calcination temperature, film thickness, and electrolyte concentration have been systematically modified. This new approach enables the separation of the different processes across the dye/semiconductor/electrolyte interface, namely the unfavorable charge recombination and the favorable electron injection/regeneration processes. In addition, studies on non-sensitized CuO and NiO electrodes provide insights into their affinity towards a reaction with the electrolyte - CuO is far less reactive towards the polyiodide species. Overall, this work underlines the superior features of CuO with respect to NiO for p-DSSCs and demonstrates a comprehensive optimization of the CuO-based DSSCs with respect to the device architecture by the aid of EIS analysis.

Authors with CRIS profile

Oliver Langmar Sonderforschungsbereich 953/3 Synthetische Kohlenstoffallotrope Rubén Dario Costa Riquelme Lehrstuhl für Physikalische Chemie I Dirk Michael Guldi Lehrstuhl für Physikalische Chemie I

Additional Organisation(s)

Exzellenz-Cluster Engineering of Advanced Materials (EAM) Interdisziplinäres Zentrum für Molekulare Materialien (ICMM)

Involved external institutions

Universidad Autónoma de Madrid (UAM) ES Spain (ES)

How to cite

APA:

Langmar, O., Ganivet, C.R., De La Torre, G., Torres, T., Costa, R.D., & Guldi, D.M. (2016). Optimizing CuO p-type dye-sensitized solar cells by using a comprehensive electrochemical impedance spectroscopic study. Nanoscale, 8(41), 17963-17975. https://doi.org/10.1039/C6NR05507A

MLA:

Langmar, Oliver, et al. "Optimizing CuO p-type dye-sensitized solar cells by using a comprehensive electrochemical impedance spectroscopic study." Nanoscale 8.41 (2016): 17963-17975.

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