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Effect of TiO 2 particle and pore size on DSSC efficiency
Materials for Renewable and Sustainable Energy ( IF 3.6 ) Pub Date : 2020-06-08 , DOI: 10.1007/s40243-020-00173-7
V. A. González-Verjan , B. Trujillo-Navarrete , Rosa María Félix-Navarro , J. N. Díaz de León , J. M. Romo-Herrera , J. C. Calva-Yáñez , J. M. Hernández-Lizalde , E. A. Reynoso-Soto

In this work, we report the preparation of TiO2 nanoparticles with a high surface area, from 120 to 168 m2 g−1 by the hydrothermal-microemulsion route and hydrothermal temperature effect over particle size, porosity, and photovoltaic parameter. The TiO2 samples were characterized by Raman, BET, TEM, SEM-FE, I–V curves, and EIS. The increase of hydrothermal temperature correlates with particle and pore size. Although when the synthesis temperature was 250 °C, the surface area presents an unexpected decrease of c.a. 28%. TiO2 samples were employed as thin-film photo-anodes for dye-sensitized solar cell (DSSC) solar cells. Photovoltaic results showed that the sample prepared at 250 °C presented the more suitable textural properties for the DSSC application. The prepared TiO2 materials with a particle size of 6.93 ± 0.59 nm and anatase crystalline phase favor electron transport and diffusion of electrolyte species, which directly impact in solar cell efficiency.

中文翻译:

TiO 2的粒径和孔径对DSSC效率的影响

在这项工作中,我们报道了通过水热微乳化途径和水热温度对粒径,孔隙率和光伏参数的影响,制备了表面积从120至168 m 2  g -1的TiO 2纳米粒子。TiO 2样品通过拉曼光谱,BET,TEM,SEM-FE,IV曲线和EIS进行表征。水热温度的升高与颗粒和孔径有关。尽管当合成温度为250°C时,表面积却出乎意料地降低了约28%。二氧化钛2样品被用作染料敏化太阳能电池(DSSC)太阳能电池的薄膜光阳极。光伏结果表明,在250°C下制备的样品具有更适合DSSC应用的织构性质。制备的粒径为6.93±0.59nm,锐钛矿晶相的TiO 2材料有利于电子传递和电解质种类的扩散,直接影响太阳能电池的效率。
更新日期:2020-06-08
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