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Enhanced Thermal Stability in Perovskite Solar Cells by Assembling 2D/3D Stacking Structures
The Journal of Physical Chemistry Letters ( IF 4.8 ) Pub Date : 2018-01-23 00:00:00 , DOI: 10.1021/acs.jpclett.7b02679 Yun Lin 1 , Yang Bai 1 , Yanjun Fang 1 , Zhaolai Chen 1 , Shuang Yang 1 , Xiaopeng Zheng 1 , Shi Tang 1 , Ye Liu 1 , Jingjing Zhao 1 , Jinsong Huang 1, 2
The Journal of Physical Chemistry Letters ( IF 4.8 ) Pub Date : 2018-01-23 00:00:00 , DOI: 10.1021/acs.jpclett.7b02679 Yun Lin 1 , Yang Bai 1 , Yanjun Fang 1 , Zhaolai Chen 1 , Shuang Yang 1 , Xiaopeng Zheng 1 , Shi Tang 1 , Ye Liu 1 , Jingjing Zhao 1 , Jinsong Huang 1, 2
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Two-dimensional (2D) perovskites have been shown to be more stable than their three-dimensional (3D) counterparts due to the protection of the organic ligands. Herein a method is introduced to form 2D/3D stacking structures by the reaction of 3D perovskite with n-Butylamine (BA). Different from regular treatment with n-Butylammonium iodide (BAI) where 2D perovskite with various layers form, the reaction of BA with MAPbI3 only produce (BA)2PbI4, which has better protection due to more organic ligands in (BA)2PbI4 than the mixture of 2D perovskites. Compared to BAI treatment, BA treatment results in smoother 2D perovskite layer on 3D perovskites with a better coverage. The photovoltaic devices with 2D/3D stacking structures show much improved stability in comparison to their 3D counterparts when subjected to heat stress tests. Moreover, the conversion of defective surface into 2D layers also induces passivation of the 3D perovskites resulting in an enhanced efficiency.
中文翻译：
通过组装2D / 3D堆叠结构增强钙钛矿太阳能电池的热稳定性
由于有机配体的保护，二维（2D）钙钛矿比其三维（3D）钙钛矿更稳定。本文介绍了一种通过3D钙钛矿与正丁胺（BA）反应形成2 D / 3D堆叠结构的方法。从与常规治疗不同Ñ丁基碘化铵（BAI）其中2D钙钛矿与各种层构成，BA与MAPbI反应3只生产（BA）2碘化铅4，其具有由于多个有机配体更好地保护在（BA）2铅4比2D钙钛矿的混合物要大。与BAI处理相比，BA处理可在3D钙钛矿上形成更平滑的2D钙钛矿层，并具有更好的覆盖率。与3D堆叠结构相比，具有2 D / 3D堆叠结构的光伏设备在经受热应力测试时显示出大大提高的稳定性。此外，将有缺陷的表面转换为2D层还会引起3D钙钛矿的钝化，从而提高效率。
更新日期：2018-01-23
中文翻译：
通过组装2D / 3D堆叠结构增强钙钛矿太阳能电池的热稳定性
由于有机配体的保护，二维（2D）钙钛矿比其三维（3D）钙钛矿更稳定。本文介绍了一种通过3D钙钛矿与正丁胺（BA）反应形成2 D / 3D堆叠结构的方法。从与常规治疗不同Ñ丁基碘化铵（BAI）其中2D钙钛矿与各种层构成，BA与MAPbI反应3只生产（BA）2碘化铅4，其具有由于多个有机配体更好地保护在（BA）2铅4比2D钙钛矿的混合物要大。与BAI处理相比，BA处理可在3D钙钛矿上形成更平滑的2D钙钛矿层，并具有更好的覆盖率。与3D堆叠结构相比，具有2 D / 3D堆叠结构的光伏设备在经受热应力测试时显示出大大提高的稳定性。此外，将有缺陷的表面转换为2D层还会引起3D钙钛矿的钝化，从而提高效率。
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