Reduction of lead leakage from damaged lead halide perovskite solar modules using self-healing polymer-based encapsulation
Reduction of lead leakage from damaged lead halide perovskite solar modules using self-healing polymer-based encapsulation
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DOI：
10.1038/s41560-019-0406-2
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发表时间：
2019-07-01
期刊：
影响因子：
56.7
通讯作者：
Qi, Yabing
中科院分区：
文献类型：
--
作者：
Jiang, Yan;Qiu, Longbin;Qi, Yabing
近年来，决定钙钛矿光伏技术商业化的主要因素已经从太阳能电池性能转向稳定性，再现性，设备升级以及防止铅（Pb）在设备使用寿命内从模块泄漏。在这里，我们模拟了一个现实的情况下，不同的封装方法的钙钛矿模块被冰雹的影响（修改FM 44787标准）机械损坏，并定量测量在各种天气条件下的铅泄漏率。我们表明，基于环氧树脂的封装方法减少了铅泄漏率的一个因素为375相比，基于玻璃盖与紫外线固化树脂在模块边缘的封装方法。环氧树脂封装的更大的铅泄漏减少与其在操作条件下的最佳自愈特性以及其增加的机械强度有关。这些发现强烈表明，如果采用适当的封装，则可以以最小的Pb泄漏部署钙钛矿光伏产品。
In recent years, the major factors that determine commercialization of perovskite photovoltaic technology have been shifting from solar cell performance to stability, reproducibility, device upscaling and the prevention of lead (Pb) leakage from the module over the device service life. Here we simulate a realistic scenario in which perovskite modules with different encapsulation methods are mechanically damaged by a hail impact (modified FM 44787 standard) and quantitatively measure the Pb leakage rates under a variety of weather conditions. We demonstrate that the encapsulation method based on an epoxy resin reduces the Pb leakage rate by a factor of 375 compared with the encapsulation method based on a glass cover with an ultraviolet-cured resin at the module edges. The greater Pb leakage reduction of the epoxy resin encapsulation is associated with its optimal self-healing characteristics under the operating conditions and with its increased mechanical strength. These findings strongly suggest that perovskite photovoltaic products can be deployed with minimal Pb leakage if appropriate encapsulation is employed.