Hole-induced polymerized interfacial film of polythiophene as co-sensitizer and back-electron injection barrier layer in dye-sensitized TiO2 nanotube array
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Otros documentos de la autoría: Shrestha, Nabeen K.; YOON, SEOG JOON; Bathula, Chinna; Opoku, Henry; Noh, Yong-Young
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https://doi.org/10.1016/j.jallcom.2018.12.048 |
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Título
Hole-induced polymerized interfacial film of polythiophene as co-sensitizer and back-electron injection barrier layer in dye-sensitized TiO2 nanotube arrayFecha de publicación
2019-04Editor
ElsevierCita bibliográfica
SHRESTHA, Nabeen K., et al. Hole-induced polymerized interfacial film of polythiophene as co-sensitizer and back-electron injection barrier layer in dye-sensitized TiO2 nanotube array. Journal of Alloys and Compounds, 2019, 781: 589-594.Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
https://www.sciencedirect.com/science/article/pii/S092583881834595XVersión
info:eu-repo/semantics/publishedVersionPalabras clave / Materias
Resumen
In this work, we demonstrate that an ultra-thin film of polythiophene deposited interfacially via hole-induced polymerization on the surface of dye-sensitized TiO2 nanotube array acts as co-sensitizer, and hinders ... [+]
In this work, we demonstrate that an ultra-thin film of polythiophene deposited interfacially via hole-induced polymerization on the surface of dye-sensitized TiO2 nanotube array acts as co-sensitizer, and hinders back-electron transfer in a DSSC. Consequently, the dark current, and the recombination reactions can be suppressed, leading to an improved number of electron density at the TiO2 array electrode. Thus, an enhanced photocurrent, and power conversion efficiency of the device is achieved. This logical concept is experimentally justified, and the device, after polythiophene interfacial treatment, demonstrates an enhanced power conversion efficiency by the factor of 39.19%. [-]
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