Changes from Bulk to Surface Recombination Mechanisms between Pristine and Cycled Perovskite Solar Cells
Impacte
Scholar |
Altres documents de l'autoria: Correa-Baena, Juan-Pablo; Turren Cruz, Silver Hamill; Tress, Wolfgang; Hagfeldt, Anders; Aranda Alonso, Clara; Shooshtari, Leyla; Bisquert, Juan; Guerrero, Antonio
Metadades
Mostra el registre complet de l'elementcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/160292
comunitat-uji-handle3:10234/160293
comunitat-uji-handle4:
INVESTIGACIONAquest recurs és restringit
http://dx.doi.org/10.1021/acsenergylett.7b00059 |
Metadades
Títol
Changes from Bulk to Surface Recombination Mechanisms between Pristine and Cycled Perovskite Solar CellsAutoria
Data de publicació
2017Editor
American Chemical SocietyISSN
2380-8195Cita bibliogràfica
CORREA-BAENA, Juan-Pablo, et al. Changes from Bulk to Surface Recombination Mechanisms between Pristine and Cycled Perovskite Solar Cells. ACS Energy Letters, 2017, vol. 2, no 3, p. 681-688.Tipus de document
info:eu-repo/semantics/articleVersió de l'editorial
http://pubs.acs.org/doi/abs/10.1021/acsenergylett.7b00059Versió
info:eu-repo/semantics/publishedVersionParaules clau / Matèries
Resum
Several aspects on the photophysical characterization of lead halide hybrid organic–inorganic perovskite solar cells remain unsolved. It has been observed that ionic transport and polarization of the interfaces cause ... [+]
Several aspects on the photophysical characterization of lead halide hybrid organic–inorganic perovskite solar cells remain unsolved. It has been observed that ionic transport and polarization of the interfaces cause very slow changes that interfere with transient measurements with effects that cannot be separated from recombination kinetics. Here we establish a protocol of initial measurement of the solar cell that provides information on recombination characteristics prior to applying any voltage cycling. The photovoltaic device is measured by several methods (photovoltage versus light intensity, open-circuit voltage decay, and impedance spectroscopy) while minimizing the exposure to external voltage stimulus to avoid ionic migration to the contacts. Results are independently confirmed by the analysis of samples with interdigitated electrodes. We show that the high-efficiency perovskite solar cells behave very closely to a bulk recombination ideal photovoltaic model. However, when voltage is scanned to determine current density–voltage curves and impedance spectroscopy at fixed illumination intensity, the cell undergoes significant changes, which we attribute to a dominance of recombination at contacts that have been modified by ionic polarization. Our method provides an effective approach for determining quantitatively the rather significant changes that occur to perovskite solar cells during standard measurements, such as current–voltage curves. [-]
Publicat a
ACS Energy Letters, 2017, vol. 2, no 3, p. 681-688Proyecto de investigación
MINECO / MAT2016-76892-C3-1-R; Generalitat Valenciana / PROMETEOII/2014/020; Spanish Ministerio de Economia y Competitividad / RYC-2014-16809Drets d'accés
Copyright © American Chemical Society
http://rightsstatements.org/vocab/InC/1.0/
info:eu-repo/semantics/restrictedAccess
http://rightsstatements.org/vocab/InC/1.0/
info:eu-repo/semantics/restrictedAccess
Apareix a les col.leccions
- INAM_Articles [505]