Interface inductive currents and carrier injection in hybrid perovskite single crystals
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Otros documentos de la autoría: Kovalenko, Alexander; Pospisil, Jan; Krajcovic, Jozef; Weiter, Martin; Guerrero, Antonio; Garcia-Belmonte, Germà
Metadatos
Mostrar el registro completo del ítemcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/2507
comunitat-uji-handle3:10234/6973
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INVESTIGACIONMetadatos
Título
Interface inductive currents and carrier injection in hybrid perovskite single crystalsAutoría
Fecha de publicación
2017-10Editor
AIP PublishingISSN
0003-6951; 1077-3118Cita bibliográfica
KOVALENKO, Alexander, et al. Interface inductive currents and carrier injection in hybrid perovskite single crystals. Applied Physics Letters, 2017, vol. 111, no 16Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
Applied Physics Letters, 2017, vol. 111, no 16Versión
info:eu-repo/semantics/publishedVersionPalabras clave / Materias
Resumen
nterfaces between the absorbing perovskite and transporting layers are gaining attention as the key locus that governs solar cell operation and long term performance. The interplay of ionic and electronic processes, ... [+]
nterfaces between the absorbing perovskite and transporting layers are gaining attention as the key locus that governs solar cell operation and long term performance. The interplay of ionic and electronic processes, along with the asymmetrical architecture of any solar cell, makes the interpretation of electrical measurements always inconclusive. A strategy to progress in relating electric responses, operating mechanisms, and device architecture relies upon simplifying the probing structure. Macroscopic CH3NH3PbBr3 single crystals with symmetrical contacts are tested by means of long-time current transient and impedance spectroscopy. It is observed that interfaces govern carrier injection to (and extraction from) perovskite layers through an inductive (negative capacitance) mechanism with a response time in the range of ∼1–1001–100 s under dark conditions and inert atmosphere. Current transient exhibits a slow recovering after the occurrence of an undershoot, signaling a complex carrier dynamics which involves changes in surface state occupancy. [-]
Proyecto de investigación
Ministerio de Economia y Competitividad (MINECO) of Spain / MAT2013-47192-C3-1-R; Generalitat Valenciana / Prometeo/2014/020; Czech Science Foundation, Czech Republic / GA165S01001Derechos de acceso
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