A.R. Hernández–Martínez*1, M. Estevez2, S. Vargas3, F. Quintanilla4, R. Rodríguez5
1,2,3,5 Centro de Física Aplicada y Tecnología Avanzada Universidad Nacional Autónoma de México, Campus Juriquilla Boulevard Juriquilla No. 3001, C.P. 76230, Juriquilla, Qro. Mexico * ahm@fata.unam.mx
4,5 Ciencias de la Salud Universidad del Valle de México, Campus Querétaro Blvd. Villas del Mesón No. 1000, CP 76230, Juriquilla, Qro. Mexico.
ABSTRACT
The performance of dye–sensitized solar cells (DSSC) based on natural dyes extracted from five different sources is reported. These are inexpensive, have no nutritional use, and are easy to find in Mexico. The solar cells were assembled using a thin film and a TiO2 mesoporous film on ITO–coated glass; these films were characterized by FTIR. The extracts were characterized using Uv–Vis and typical I–V curves were obtained for the cells. The best performance was for Punica Granatum with a solar energy conversion efficiency of 1.86%, with a current density Jsc of 3.341 mA/cm2 using an incident irradiation of 100 mW/cm2 at 25 °C.
Keywords: Dye–sensitized solar cells, betalain, natural dyes, solar energy, dip coating.
]]>RESUMEN
Se reporta en este informe el rendimiento de las celdas solares sensibilizadas por colorante (DSSC) basado en un tinte natural extraído de cinco diferentes fuentes que no tienen usos nutricionales, que son de bajo costo y de fácil adquisición en México. Las celdas solares se construyeron con una película delgada y otra mesoporosa de TiO2 sobre un vidrio recubierto de ITO; estas películas se caracterizaron mediante FTIR. Los extractos se caracterizaron utilizando espectrometría UV–Vis y la típica curva I–V. El mayor rendimiento fue encontrado en el extracto de Punica Granatum con una eficiencia de conversión de energía solar de 1,86%, con una densidad de corriente Jsc de 3.341 mA/cm2 con una irradiación de 100 mW/cm2 a 25 °C.
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