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Ionic Liquid as an Additive for Two-Step Sequential Deposition for Air-Processed Efficient and Stable Carbon-Based CsPbI2Br All-Inorganic Perovskite Solar Cells
ACS Applied Energy Materials ( IF 5.4 ) Pub Date : 2021-12-13 , DOI: 10.1021/acsaem.1c01759
Xiangdong Li 1 , Yuqing Zhang 1 , Ganghong Liu 1 , Zehao Zhang 1 , Lixin Xiao 1 , Zhijian Chen 1 , Bo Qu 1
ACS Applied Energy Materials ( IF 5.4 ) Pub Date : 2021-12-13 , DOI: 10.1021/acsaem.1c01759
Xiangdong Li 1 , Yuqing Zhang 1 , Ganghong Liu 1 , Zehao Zhang 1 , Lixin Xiao 1 , Zhijian Chen 1 , Bo Qu 1
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All-inorganic lead halide perovskite CsPbI2Br is a promising candidate in the photovoltaic field due to its improved thermal stability and suitable band gap. However, the perovskite phase of CsPbI2Br is not stable under an ambient atmosphere because of its water vapor-induced phase transition. Most of the CsPbI2Br perovskite solar cells are manufactured in gloveboxes to avoid the negative effect of water vapor, which would considerably increase the cost of large-scale manufacturing. Herein, we describe a methylamine acetate (MAAc) additive strategy for two-step sequential deposition, which allows for air-processed formation of the CsPbI2Br film. MAAc is used to improve the crystallization of CsPbI2Br in the two-step deposition process. X-ray diffraction patterns reveal the formation of the intermediate phase of MA2Pb3X8 (X = I and Br) during the preparation. In addition, ethylene glycol is added to the cesium halide solution to further increase the uniformity of the CsPbI2Br film. The carbon-based CsPbI2Br planar perovskite solar cells prepared under an ambient atmosphere with a relative humidity of 15% could achieve a champion efficiency of 11.2% and retain 79.3% of their initial efficiency value after aging in an ambient atmosphere with 15% relative humidity at room temperature for 360 h.
中文翻译:
离子液体作为空气处理高效稳定碳基 CsPbI2Br 全无机钙钛矿太阳能电池两步顺序沉积的添加剂
全无机卤化铅钙钛矿 CsPbI 2 Br 由于其改进的热稳定性和合适的带隙,在光伏领域是一个很有前途的候选材料。然而,CsPbI 2 Br的钙钛矿相由于其水蒸气诱导的相变而在环境气氛下不稳定。大多数 CsPbI 2 Br 钙钛矿太阳能电池是在手套箱中制造的,以避免水蒸气的负面影响,这将大大增加大规模制造的成本。在此,我们描述了一种用于两步顺序沉积的乙酸甲胺 (MAAc) 添加剂策略,该策略允许通过空气处理形成 CsPbI 2 Br 薄膜。MAAc 用于改善 CsPbI 2的结晶Br 在两步沉积过程中。X 射线衍射图显示在制备过程中形成了 MA 2 Pb 3 X 8 (X = I 和 Br)的中间相。此外,在卤化铯溶液中加入乙二醇,进一步提高了CsPbI 2 Br 薄膜的均匀性。在相对湿度为 15% 的环境气氛下制备的碳基 CsPbI 2 Br 平面钙钛矿太阳能电池可以获得 11.2% 的冠军效率,并在相对湿度为 15% 的环境气氛中老化后保持其初始效率值的 79.3%。室温湿度 360 小时。
更新日期:2021-12-27
中文翻译:
![](https://scdn.x-mol.com/jcss/images/paperTranslation.png)
离子液体作为空气处理高效稳定碳基 CsPbI2Br 全无机钙钛矿太阳能电池两步顺序沉积的添加剂
全无机卤化铅钙钛矿 CsPbI 2 Br 由于其改进的热稳定性和合适的带隙,在光伏领域是一个很有前途的候选材料。然而,CsPbI 2 Br的钙钛矿相由于其水蒸气诱导的相变而在环境气氛下不稳定。大多数 CsPbI 2 Br 钙钛矿太阳能电池是在手套箱中制造的,以避免水蒸气的负面影响,这将大大增加大规模制造的成本。在此,我们描述了一种用于两步顺序沉积的乙酸甲胺 (MAAc) 添加剂策略,该策略允许通过空气处理形成 CsPbI 2 Br 薄膜。MAAc 用于改善 CsPbI 2的结晶Br 在两步沉积过程中。X 射线衍射图显示在制备过程中形成了 MA 2 Pb 3 X 8 (X = I 和 Br)的中间相。此外,在卤化铯溶液中加入乙二醇,进一步提高了CsPbI 2 Br 薄膜的均匀性。在相对湿度为 15% 的环境气氛下制备的碳基 CsPbI 2 Br 平面钙钛矿太阳能电池可以获得 11.2% 的冠军效率,并在相对湿度为 15% 的环境气氛中老化后保持其初始效率值的 79.3%。室温湿度 360 小时。