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Robust and Swiftly Reversible Thermochromic Behavior of a 2D Perovskite of (C6H4(CH2NH3)2)(CH3NH3)[Pb2I7] for Smart Window and Photovoltaic Smart Window Applications
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2021-03-05 , DOI: 10.1021/acsami.1c00163 Yang Zhang 1 , Zeyang Wang 1 , Shu Hu 1 , Pingyuan Yan 1 , Heng Li 1 , ChuanXiang Sheng 1
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2021-03-05 , DOI: 10.1021/acsami.1c00163 Yang Zhang 1 , Zeyang Wang 1 , Shu Hu 1 , Pingyuan Yan 1 , Heng Li 1 , ChuanXiang Sheng 1
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Highly robust, swiftly reversible thermochromic nature of a two-dimensional (2D) perovskite of (PDMA)(CH3NH3)n−1PbnI3n+1, nominally prepared as n = 2 is found, where PDMA = C6H4(CH2NH3)2. A wide band gap variation from 700 to 430 nm is observed between room temperature and >60 °C under ambient conditions, resulting from moisture absorption and desorption. X-ray diffraction and Fourier-transform infrared spectroscopy are performed to analyze the hydrated and dehydrated states. Furthermore, the (PDMA)(CH3NH3)n−1PbnI3n+1 film is demonstrated as an active material for smart windows and thermochromic solar cells, which could lower the inside air temperature in an enclosed space and supply a power conversion efficiency of more than 0.5% at a high ambient temperature, respectively. Overall, we may pave a pathway for exploring the novel phenomena and applications of Dion–Jacobson 2D perovskites.
中文翻译：
用于智能窗和光伏智能窗应用的（C 6 H 4（CH 2 NH 3）2）（CH 3 NH 3）[Pb 2 I 7 ]的2D钙钛矿的鲁棒且可逆可逆热变色行为
（PDMA）（CH 3 NH 3）n -1 Pb n I 3 n +1的二维（2D）钙钛矿的高强度，快速可逆热变色性质，发现其标称制备为n = 2，其中PDMA = C 6 H 4（CH 2 NH 3）2。在室温和> 60°C的环境条件下，观察到宽带隙在700至430 nm之间变化，这是由于水分吸收和解吸所致。进行X射线衍射和傅立叶变换红外光谱分析水合和脱水状态。此外，（PDMA）（CH 3NH 3）n -1 Pb n I 3 n +1薄膜被证明是用于智能窗户和热致变色太阳能电池的活性材料，可以降低封闭空间中的内部空气温度，并提供超过0.5％的功率转换效率分别在较高的环境温度下 总体而言，我们可能会为探索Dion-Jacobson 2D钙钛矿的新颖现象和应用铺平道路。
更新日期：2021-03-17
中文翻译：
用于智能窗和光伏智能窗应用的（C 6 H 4（CH 2 NH 3）2）（CH 3 NH 3）[Pb 2 I 7 ]的2D钙钛矿的鲁棒且可逆可逆热变色行为
（PDMA）（CH 3 NH 3）n -1 Pb n I 3 n +1的二维（2D）钙钛矿的高强度，快速可逆热变色性质，发现其标称制备为n = 2，其中PDMA = C 6 H 4（CH 2 NH 3）2。在室温和> 60°C的环境条件下，观察到宽带隙在700至430 nm之间变化，这是由于水分吸收和解吸所致。进行X射线衍射和傅立叶变换红外光谱分析水合和脱水状态。此外，（PDMA）（CH 3NH 3）n -1 Pb n I 3 n +1薄膜被证明是用于智能窗户和热致变色太阳能电池的活性材料，可以降低封闭空间中的内部空气温度，并提供超过0.5％的功率转换效率分别在较高的环境温度下 总体而言，我们可能会为探索Dion-Jacobson 2D钙钛矿的新颖现象和应用铺平道路。
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