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Artículo

Anomalous photocurrent response of hybrid TiO2:P3HT solar cells under different incident light wavelengths

Koffman Frischknecht, AlejandroIcon ; Yaccuzzi, Exequiel EliseoIcon ; Pla, Juan CarlosIcon ; Perez, Maria DoloresIcon
Fecha de publicación: 12/2016
Editorial: Elsevier Science
Revista: Solar Energy Materials And Solar Cells
ISSN: 0927-0248
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Otras Ingeniería del Medio Ambiente

Resumen

Ordered mesoporous titania present optimum optical and electronic characteristics for solar cells applications. Hybrid solar cells that combine a dye polymer and porous titania is being studied as an inexpensive alternative to solid state photoconversion devices and the role of the inorganic/organic interface is relevant to understanding the efficiency parameters. Many reports have described UV enhancement and light soaking effects for solid state hybrid cells containing titania. In this work, we study devices fabricated by incorporating P3HT into the ordered pores of a sol-gel synthesized nanocrystalline titania. We observe that the spectral response is modified upon illumination at different wavelengths. When irradiated with UV light (below 370 nm), the spectral response is drastically enhanced but when shined with visible light, the external quantum efficiency is reduced. Both effects are reversible such that several enhancement/degradation cycles can be performed. The detrimental visible light effect takes longer than the UV enhancement, which suggests a polymer mediated mechanism. Upon AM 1.5 illumination, both opposing effects are present and results in a Jsc that is sensitive to the measuring time and the test irradiation spectrum.
Palabras clave: Hybrid Solar Cells , Uv Enhancement , Mesoporous Titania
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info:eu-repo/semantics/restrictedAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
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URI: http://hdl.handle.net/11336/46779
DOI: https://dx.doi.org/10.1016/j.solmat.2016.08.009
URL: https://www.sciencedirect.com/science/article/pii/S0927024816303014
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Citación
Koffman Frischknecht, Alejandro; Yaccuzzi, Exequiel Eliseo; Pla, Juan Carlos; Perez, Maria Dolores; Anomalous photocurrent response of hybrid TiO2:P3HT solar cells under different incident light wavelengths; Elsevier Science; Solar Energy Materials And Solar Cells; 157; 12-2016; 907-912
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