Titanium dioxide nanorod diameter and layer porosity optimization by estimating electrical performance of dye and perovskite sensitized solar cell

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• 作者：Dhyey Raval ; Brijesh Tripathi ; Abhijit Ray
• 关键词：Porous TiO2 nanorod layer ; DSSC ; Perovskite ; Solar cell
• 刊名：Journal of Porous Materials
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：24
• 期：1
• 页码：217-231
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Catalysis; Characterization and Evaluation of Materials; Physical Chemistry;
• 出版者：Springer US
• ISSN：1573-4854
• 卷排序：24

文摘

This article reports the synthesis of vertically oriented titanium dioxide nanorod (TiO₂-NR) layer on fluorine doped tin oxide substrate using hydrothermal method and its application in solar energy harvesting. The morphological variations of TiO₂-NR have been achieved by varying precursor concentration and growth temperature in the hydrothermal process. The porosity of TiO₂-NR layer decreases from 49 to 11 % with increasing NR diameter from 70 to 204 nm for various practically achievable inter-rod separations. The effect of TiO₂-NR layer parameters, such as, nanorod diameter, inter-rod separation, and porosity on the charge collection has been explored through theoretical and experimental photo-generated current density of the dye and perovskite (CH₃NH₃PbI₃) solar cells to find the optimum range. High current density with a deviation of ±10 % of the best value can be achieved for a porosity range of 35–65 %, which corresponds to the nanorod diameter range of 75 ± 8, 95 ± 14, 110 ± 16, 130 ± 20 and 150 ± 22 nm for the inter-rod separation of 200, 250, 300, 350 and 400 nm respectively.