Surface Polarization Model for the Dynamic Hysteresis of Perovskite Solar Cells
Impacto
Scholar |
Otros documentos de la autoría: Ravishankar, Sandheep; Almora Rodríguez, Osbel; Echeverría-Arrondo, Carlos; Ghahremanirad, Elnaz; Aranda Alonso, Clara; Guerrero, Antonio; Fabregat-Santiago, Francisco; Zaban, Arie; Garcia-Belmonte, Germà; Bisquert, Juan
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http://dx.doi.org/10.1021/acs.jpclett.7b00045 |
Metadatos
Título
Surface Polarization Model for the Dynamic Hysteresis of Perovskite Solar CellsAutoría
Fecha de publicación
2017-02Editor
American Chemical SocietyCita bibliográfica
RAVISHANKAR, Sandheep, et al. Surface polarization model for the dynamic hysteresis of perovskite solar cells. The Journal of Physical Chemistry Letters, 2017, vol. 8, no 5, p. 915-921.Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
http://pubs.acs.org/doi/abs/10.1021/acs.jpclett.7b00045Versión
info:eu-repo/semantics/publishedVersionPalabras clave / Materias
Resumen
The dynamic hysteresis of perovskite solar cells consists of the occurrence of significant deviations of the current density–voltage curve shapes depending on the specific conditions of measurement such as starting ... [+]
The dynamic hysteresis of perovskite solar cells consists of the occurrence of significant deviations of the current density–voltage curve shapes depending on the specific conditions of measurement such as starting voltage, waiting time, scan rate, and other factors. Dynamic hysteresis is a serious impediment to stabilized and reliable measurement and operation of the perovskite solar cells. In this Letter, we formulate a model for the dynamic hysteresis based on the idea that the cell accumulates a huge quantity of surface electronic charge at forward bias that is released on voltage sweeping, causing extra current over the normal response. The charge shows a retarded dynamics due to the slow relaxation of the accompanying ionic charge, that produces variable shapes depending on scan rate or poling value and time. We show that the quantitative model provides a consistent description of experimental results and allows us to determine significant parameters of the perovskite solar cell for both the transient and steady-state performance. [-]
Proyecto de investigación
MINECO of Spain (MAT2016-76892-C3-1-R) ; Generalitat Valenciana (PROMETEOII/2014/020) ; Generalitat Valenciana (GRISOLIA/2014/034 and GRISOLIA/2014/035)Derechos de acceso
http://rightsstatements.org/vocab/CNE/1.0/
info:eu-repo/semantics/restrictedAccess
info:eu-repo/semantics/restrictedAccess
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