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Efficient Air-Processed MA-Free Perovskite Solar Cells by SH-Based Silane Interface Modification
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2024-06-05 , DOI: 10.1021/acsami.4c02919
Xinlei Gan 1 , Jing Zhang 2 , Yanjun Xing 2 , Xuefeng Peng 1 , Yinxia Han 1 , Qiuxiang Wang 2 , Jiaxing Xiong 2 , Xiaohui Liu 2 , Like Huang 2 , Weiping Li 2 , Qidong Tai 3 , Yuejin Zhu 1
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2024-06-05 , DOI: 10.1021/acsami.4c02919
Xinlei Gan 1 , Jing Zhang 2 , Yanjun Xing 2 , Xuefeng Peng 1 , Yinxia Han 1 , Qiuxiang Wang 2 , Jiaxing Xiong 2 , Xiaohui Liu 2 , Like Huang 2 , Weiping Li 2 , Qidong Tai 3 , Yuejin Zhu 1
Affiliation
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Air-processed perovskite solar cells (PSCs) with high photoelectric conversion efficiency (PCE) can not only further reduce the production cost but also promote its industrialization. During the preparation of the PSCs in ambient air, the contact of the buried interface not only affects the crystallization of the perovskite film but also affects the interface carrier transport, which is directly related to the performance of the device. Here, we optimize the buried interface by introducing 3-mercaptopropyltrimethoxysilane (MPTMS, (CH3O)3Si(CH2)3SH) on the nickel oxide (NiOx) surface. The crystallization of the perovskite film is improved by enhancing surface hydrophobicity; besides, the SH-based functional group of MPTMS passivates the uncoordinated lead at the interface, which effectively reduces the defects at the bottom interface of perovskite and inhibits the nonradiative recombination at the interface. Moreover, the energy level between the NiOx layer and the perovskite layer is better matched. Based on multiple functions of MPTMS modification, the open circuit voltage of the device is obviously improved, and efficient air-processed methylamine-free (MA-free) PSCs are realized with PCE reaching 21.0%. The device still maintains the initial PCE of 85% after 1000 h aging in the glovebox. This work highlights interface modification in air-processed MA-free PSCs to promote the industrialization of PSCs.
中文翻译：
基于SH的硅烷界面改性高效空气处理无MA钙钛矿太阳能电池
具有高光电转换效率（PCE）的空气处理钙钛矿太阳能电池（PSC）不仅可以进一步降低生产成本，还可以促进其产业化。在环境空气中制备PSC时，埋入界面的接触不仅影响钙钛矿薄膜的结晶，而且影响界面载流子传输，这直接关系到器件的性能。在这里，我们通过在氧化镍（NiO x ）表面引入3-巯基丙基三甲氧基硅烷（MPTMS，(CH 3 O) 3 Si(CH 2 ) 3 SH）来优化埋入界面。通过增强表面疏水性来改善钙钛矿薄膜的结晶度；此外，MPTMS的SH基官能团钝化了界面处的不配位铅，有效减少了钙钛矿底部界面的缺陷，抑制了界面处的非辐射复合。此外，NiO x层和钙钛矿层之间的能级匹配得更好。基于MPTMS的多项功能改造，器件的开路电压明显提高，实现了高效的空气处理无甲胺（MA-free）PSC，PCE达到21.0%。该器件在手套箱中老化1000 h后仍保持85%的初始PCE。这项工作重点介绍了空气处理的无 MA PSC 的界面修饰，以促进 PSC 的工业化。
更新日期：2024-06-05
中文翻译：
基于SH的硅烷界面改性高效空气处理无MA钙钛矿太阳能电池
具有高光电转换效率（PCE）的空气处理钙钛矿太阳能电池（PSC）不仅可以进一步降低生产成本，还可以促进其产业化。在环境空气中制备PSC时，埋入界面的接触不仅影响钙钛矿薄膜的结晶，而且影响界面载流子传输，这直接关系到器件的性能。在这里，我们通过在氧化镍（NiO x ）表面引入3-巯基丙基三甲氧基硅烷（MPTMS，(CH 3 O) 3 Si(CH 2 ) 3 SH）来优化埋入界面。通过增强表面疏水性来改善钙钛矿薄膜的结晶度；此外，MPTMS的SH基官能团钝化了界面处的不配位铅，有效减少了钙钛矿底部界面的缺陷，抑制了界面处的非辐射复合。此外，NiO x层和钙钛矿层之间的能级匹配得更好。基于MPTMS的多项功能改造，器件的开路电压明显提高，实现了高效的空气处理无甲胺（MA-free）PSC，PCE达到21.0%。该器件在手套箱中老化1000 h后仍保持85%的初始PCE。这项工作重点介绍了空气处理的无 MA PSC 的界面修饰，以促进 PSC 的工业化。
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