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Composite Encapsulation Enabled Superior Comprehensive Stability of Perovskite Solar Cells.
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2020-05-22 , DOI: 10.1021/acsami.0c06823 Yifan Lv 1 , Hui Zhang 1 , Ruqing Liu 1 , Yanan Sun 1 , Wei Huang 1
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2020-05-22 , DOI: 10.1021/acsami.0c06823 Yifan Lv 1 , Hui Zhang 1 , Ruqing Liu 1 , Yanan Sun 1 , Wei Huang 1
Affiliation
Solar cells based on organometal hybrid perovskites have exhibited promising commercialization potential owing to their high efficiency and low-cost manufacturing. However, the poor outdoor operational stability of perovskite solar cells restricted their practical application, and moisture permeation and organic compounds volatilization are realized as the main factors accelerating performance degradation. Herein, we developed a composite encapsulation, by sequentially depositing a compact Al2O3 layer and a hydrophobic 1H,1H,2H,2H-perfluorodecyltrichlorosilane layer on the completed device, to efficiently circumvent vapor permeability. Thus, the stability of the encapsulated perovskite solar cells was systematically investigated under simulated operational conditions. It was found that the MAPbI3 perovskite was prone to decay into solid PbI2 and organic vapor at high temperature or upon light illumination, and the decomposition was reversible in a well-encapsulated environment, resulting in reversible performance degradation and recovery. The enhanced thermal stability was ascribed to the competition between the perovskite decomposition and reverse synthesis. The as-prepared high-quality, multilayered encapsulation scheme demonstrated superior sealing property, and no obvious performance decline was observed when the device was stored under ambient air, continuous light illumination, double 85 condition (85 °C, 85% humidity), or even water immersion. Therefore, this work paves the way for a scalable and robust encapsulation strategy feasible to hybrid perovskite optoelectronics in a reproducible manner.
中文翻译:
复合封装使钙钛矿太阳能电池具有卓越的综合稳定性。
基于有机金属杂化钙钛矿的太阳能电池由于其高效和低成本的制造而显示出有希望的商业化潜力。但是,钙钛矿型太阳能电池的户外操作稳定性差,限制了它们的实际应用,水分渗透和有机化合物挥发是加速性能下降的主要因素。本文中,我们通过依次沉积致密的Al 2 O 3层和疏水性1 H,1 H,2 H,2 H来开发复合封装-完整装置上的全氟癸基三氯硅烷层,可有效规避蒸汽渗透性。因此,在模拟的操作条件下系统地研究了封装的钙钛矿太阳能电池的稳定性。发现MAPbI 3钙钛矿易于分解成固体PbI 2。以及高温或光照下的有机蒸气,在良好封装的环境中分解是可逆的,从而导致可逆的性能下降和恢复。热稳定性的提高归因于钙钛矿分解和反向合成之间的竞争。所制备的高质量多层封装方案显示出优异的密封性能,并且在环境空气,连续光照,双85条件(85°C,85%湿度)或甚至浸入水中 因此,这项工作为以可重现的方式混合钙钛矿光电技术可行的可扩展且鲁棒的封装策略铺平了道路。
更新日期:2020-05-22
中文翻译:
复合封装使钙钛矿太阳能电池具有卓越的综合稳定性。
基于有机金属杂化钙钛矿的太阳能电池由于其高效和低成本的制造而显示出有希望的商业化潜力。但是,钙钛矿型太阳能电池的户外操作稳定性差,限制了它们的实际应用,水分渗透和有机化合物挥发是加速性能下降的主要因素。本文中,我们通过依次沉积致密的Al 2 O 3层和疏水性1 H,1 H,2 H,2 H来开发复合封装-完整装置上的全氟癸基三氯硅烷层,可有效规避蒸汽渗透性。因此,在模拟的操作条件下系统地研究了封装的钙钛矿太阳能电池的稳定性。发现MAPbI 3钙钛矿易于分解成固体PbI 2。以及高温或光照下的有机蒸气,在良好封装的环境中分解是可逆的,从而导致可逆的性能下降和恢复。热稳定性的提高归因于钙钛矿分解和反向合成之间的竞争。所制备的高质量多层封装方案显示出优异的密封性能,并且在环境空气,连续光照,双85条件(85°C,85%湿度)或甚至浸入水中 因此,这项工作为以可重现的方式混合钙钛矿光电技术可行的可扩展且鲁棒的封装策略铺平了道路。