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首页> 外文期刊>ACS applied materials & interfaces >Efficient Perovskite Solar Cells Depending on TiO2 Nanorod Arrays
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Efficient Perovskite Solar Cells Depending on TiO2 Nanorod Arrays

机译：高效的钙钛矿太阳能电池取决于TiO2纳米棒阵列

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摘要

Perovskite solar cells (PSCs) with TiO2 materials have attracted much attention due to their high photovoltaic performance. Aligned TiO2 nanorods have long been used for potential application in highly efficient perovskite solar cells, but the previously reported efficiencies of perovskite solar cells based on TiO2 nanorod arrays were underrated. Here we show a solvothermal method based on a modified ketone-HCl system with the addition of organic acids suitable for modulation of the TiO2 nanorod array films to fabricate highly efficient perovskite solar cells. Photovoltaic measurements indicated that efficient nanorod-structured perovskite solar cells can be achieved with the length of the nanorods as long as approximately 200 nm. A record efficiency of 18.22% under the reverse scan direction has been optimized by avoiding direct contact between the TiO2 nanorods and the hole transport materials, eliminating the organic residues on the nanorod surfaces using UV-ozone treatment and tuning the nanorod array morphologies through addition of different organic acids in the solvothermal process.
机译：含TiO2材料的钙钛矿太阳能电池（PSC）由于其高光伏性能而备受关注。对齐的TiO2纳米棒长期以来一直被用于高效钙钛矿太阳能电池中的潜在应用，但是先前报道的基于TiO2纳米棒阵列的钙钛矿太阳能电池的效率却被低估了。在这里，我们展示了一种基于溶剂化热法的方法，该方法基于改良的酮-HCl系统，并添加了适用于调节TiO2纳米棒阵列膜以制造高效钙钛矿太阳能电池的有机酸。光伏测量表明，纳米棒的长度只要大约200 nm，就可以实现高效的纳米棒结构的钙钛矿太阳能电池。通过避免TiO2纳米棒与空穴传输材料之间的直接接触，使用UV-臭氧处理消除了纳米棒表面上的有机残留物并通过添加纳米棒来调整纳米棒阵列的形态，已优化了反向扫描下创纪录的效率18.22％。溶剂热过程中的不同有机酸。

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