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Electron injection and scaffold effects in perovskite solar cells

Opened Access Electron injection and scaffold effects in perovskite solar cells

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Autor: Anaya Martín, Miguel
Calvo Roggiani, Mauricio
Míguez García, Hernán Ruy
Yuelong Li
Clasen Hames, Bruno
Fabregat Santiago, Francisco
Mora Seró, Iván
Wei Zhang
Snaith, Henry J.
Fecha: 2017-01-21
Publicado en: Journal of Materials Chemistry C, 5 (3), 634-644.
Tipo de documento: Artículo
Resumen: In spite of the impressive efficiencies reported for perovskite solar cells (PSCs), key aspects of their working principles, such as electron injection at the contacts or the suitability of the utilization of a specific scaffold layer, are not yet fully understood. Increasingly complex scaffolds attained by the sequential deposition of TiO2 and SiO2 mesoporous layers onto transparent conducting substrates are used to perform a systematic characterization of both the injection process at the electron selective contact and the scaffold effect in PSCs. By forcing multiple electron injection processes at a controlled sequence of perovskite–TiO2 interfaces before extraction, interfacial injection effects are magnified and hence characterized in detail. An anomalous injection behavior is observed, the fingerprint of which is the presence of significant inductive loops in the impedance spectra with a magnitude that correlates with the number of interfaces in the scaffold. Analysis of the res...
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Cita: Anaya Martín, M., Calvo Roggiani, M., Míguez García, H.R., Yuelong Li, , Clasen Hames, B., Fabregat Santiago, F.,...,Snaith, H.J. (2017). Electron injection and scaffold effects in perovskite solar cells. Journal of Materials Chemistry C, 5 (3), 634-644.
Tamaño: 3.122Mb
Formato: PDF

URI: http://hdl.handle.net/11441/63955

DOI: 10.1039/c6tc04639h

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