Carrier recombination losses in inverted polymer: Fullerene solar cells with ZnO hole-blocking layer from transient photovoltage and impedance spectroscopy techniques.
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Otros documentos de la autoría: Garcia-Belmonte, Germà; Pérez Boix, Pablo; Ajuria, Jon; Palacios, Roberto
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Mostrar el registro completo del ítemcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/2507
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http://dx.doi.org/10.1063/1.3561437 |
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Título
Carrier recombination losses in inverted polymer: Fullerene solar cells with ZnO hole-blocking layer from transient photovoltage and impedance spectroscopy techniques.Fecha de publicación
2011-04Editor
© 2011 American Institute of PhysicsISSN
0021-8979Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
http://jap.aip.org/resource/1/japiau/v109/i7/p074514_s1Versión
info:eu-repo/semantics/publishedVersionPalabras clave / Materias
Resumen
In this study, full coincidence between impedance spectroscopy and transient photovoltage techniques in measuring recombination kinetics of photogenerated charge carriers in inverted polymer:fullerene organic solar ... [+]
In this study, full coincidence between impedance spectroscopy and transient photovoltage techniques in measuring recombination kinetics of photogenerated charge carriers in inverted polymer:fullerene organic solar cells with ZnO hole-blocking layer is reported. Carrier lifetime exhibits values at illumination intensities near 1 sun within the microseconds time scale. Photogenerated charge carrier density attains values within 1015–1016 cm−3. Decay kinetics is analyzed by means of a bimolecular recombination law with a recombination coefficient slightly dependent on the charge density, which lies within the order of k ∼ 10−12 cm3 s−1. It is also demonstrated that inverted-processed cells exhibit capacitance, recombination resistance, and lifetime parameters comparable to those extracted from regular cells, despite the great differences between the contact structures of these kinds of devices. [-]
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Journal of Applied Physics (April 2011), vol. 109, no. 7Derechos de acceso
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info:eu-repo/semantics/restrictedAccess
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