In this study, a CH₃NH₃PbI₃‐based perovskite solar cell (PSC) with high power conversion efficiency (PCE) has achieved by incorporating a nanopatterned fluorine‐doped tin oxide (FTO) substrate (NPFS). This NPFS‐PSC is prepared with different structural depths (100, 150, and 200 nm) using both self‐assembly and sphere lithography techniques. As determine through the optical and electrical analysis of different PSC devices, the NPFS‐PSCs not only display the enhanced light absorption (due to the 2D diffraction grating) but also improve the electron collection efficiency by increasing the FTO/electron transport layer (ETL) and ETL/perovskite effective interface area. Compared to a planar PSC, the photocurrent density of the 200 nm etched NPFS‐PSC is enhanced from 19.27 to 23.81 mA cm⁻² leading to an increase in the PCE from 14.21% to 17.85%. These results indicate that introducing the NPFS into the TiO₂‐based PSC can improve both light absorption ability and electron extraction and, therefore, represents a novel, promising, high‐performance photovoltaic device.

中文翻译：

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CH3NH3PbI3钙钛矿型太阳能电池使用纳米图案的增强电子收集和光收集

在这项研究中，CH ₃ NH ₃ PbI ₃基于钙钛矿的太阳能电池（PSC）具有高功率转换效率（PCE），是通过掺入纳米图案的掺氟氧化锡（FTO）基板（NPFS）来实现的。使用自组装和球面光刻技术，可以制备具有不同结构深度（100、150和200 nm）的NPFS-PSC。通过对不同PSC设备的光学和电气分析确定，NPFS‐PSC不仅显示出增强的光吸收（由于2D衍射光栅），还通过增加FTO /电子传输层（ETL）来提高电子收集效率和ETL /钙钛矿有效界面区域。与平面PSC相比，200 nm蚀刻的NPFS-PSC的光电流密度从19.27增强到23.81 mA cm ^-2导致PCE从14.21％增加到17.85％。这些结果表明，将NPFS引入基于TiO ₂的PSC中既可以提高光吸收能力，又可以改善电子提取，因此代表了一种新颖，有前途的高性能光伏器件。