Light-Induced Space-Charge Accumulation Zone as Photovoltaic Mechanism in Perovskite Solar Cells
comunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/2507
comunitat-uji-handle3:10234/6973
comunitat-uji-handle4:
INVESTIGACIONMetadades
Títol
Light-Induced Space-Charge Accumulation Zone as Photovoltaic Mechanism in Perovskite Solar CellsData de publicació
2016Editor
American Chemical SocietyISSN
1948-7185Cita bibliogràfica
ISO 690 ZARAZUA, Isaac; BISQUERT, Juan; GARCIA-BELMONTE, Germà. Light-induced Space-charge Accumulation Zone as Photovoltaic Mechanism in Perovskite Solar Cells. The journal of physical chemistry letters, 2016, vol. 7, no 3, p. 525–528Tipus de document
info:eu-repo/semantics/articleVersió de l'editorial
http://pubs.acs.org/doi/full/10.1021/acs.jpclett.5b02810Versió
info:eu-repo/semantics/acceptedVersionParaules clau / Matèries
Resum
We fabricated formamidinium lead iodide perovskite solar cell for analysis of the photovoltaic mechanism based on the interpretation of the capacitance variation under illumination. It was shown that the low-frequency ... [+]
We fabricated formamidinium lead iodide perovskite solar cell for analysis of the photovoltaic mechanism based on the interpretation of the capacitance variation under illumination. It was shown that the low-frequency capacitance increases proportional to incident light intensity, and in addition it increases proportional to absorber thickness. Furthermore, the voltage dependence of capacitance is exponential with slope 1/2 (thermal energy). We conclude that the large photovoltage and capacitance are associated with electronic accumulation zone at the interface with the metal oxide contact. While this type of accumulation capacitance is common in many devices as transistors, the perovskite solar cell shows a singular behavior in that under light the electronic carrier accumulation grows unlimited by another series capacitance, reaching values as large as 10 mF cm–2 at one sun illumination. [-]
Publicat a
The journal of physical chemistry letters, 2016Drets d'accés
Copyright © American Chemical Society
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info:eu-repo/semantics/openAccess
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info:eu-repo/semantics/openAccess
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