Mechanism of carrier accumulation in perovskite thin-absorber solar cells
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Otros documentos de la autoría: Mora-Sero, Ivan; González Pedro, Victoria; Fabregat-Santiago, Francisco; Juarez-Perez, Emilio J.; Kim, Hui-Seon; Park, Nam-Gyu; Bisquert, Juan
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Título
Mechanism of carrier accumulation in perovskite thin-absorber solar cellsAutoría
Fecha de publicación
2013Editor
Nature Publishing GroupISSN
2041-1723Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
http://www.nature.com/ncomms/2013/130731/ncomms3242/full/ncomms3242.html#accessVersión
info:eu-repo/semantics/submittedVersionPalabras clave / Materias
Resumen
Photovoltaic conversion requires two successive steps: accumulation of a photogenerated charge and charge separation. Determination of how and where charge accumulation is attained and how this accumulation can be ... [+]
Photovoltaic conversion requires two successive steps: accumulation of a photogenerated charge and charge separation. Determination of how and where charge accumulation is attained and how this accumulation can be identified is mandatory for understanding the performance of a photovoltaic device and for its further optimization. Here we analyse the mechanism of carrier accumulation in lead halide perovskite, CH3NH3PbI3, thin-absorber solar cells by means of impedance spectroscopy. A fingerprint of the charge accumulation in high density of states of the perovskite absorber material has been observed at the capacitance of the samples. This is, as far as we know, the first observation of charge accumulation in light-absorbing material for nanostructured solar cells, indicating that it constitutes a new kind of photovoltaic device, differentiated from sensitized solar cells, which will require its own methods of study, characterization and optimization. [-]
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Nature Communications 4, Article number: 2242, 2013Derechos de acceso
Copyright © 2013, Rights Managed by Nature Publishing Group
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info:eu-repo/semantics/openAccess
http://rightsstatements.org/vocab/InC/1.0/
info:eu-repo/semantics/openAccess
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