Fully-ambient-air and antisolvent-free-processed stable perovskite solar cells with perovskite-based composites and interface engineering
Fully-ambient-air and antisolvent-free-processed stable perovskite solar cells with perovskite-based composites and interface engineering
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DOI：
10.1016/j.nanoen.2019.103964
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发表时间：
2019-10
期刊：
影响因子：
17.6
通讯作者：
Yousheng Wang;Tahmineh Mahmoudi;Won‐Yeop Rho;Y. Hahn
中科院分区：
文献类型：
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作者：
Yousheng Wang;Tahmineh Mahmoudi;Won‐Yeop Rho;Y. Hahn
为了使钙钛矿太阳能电池（PSCs）商业化，必须解决由钙钛矿材料的降解、光和热不稳定性以及光电流密度-电压（J-V）滞后行为引起的器件稳定性问题。此外，大多数提出的高效PSC利用抗溶剂策略来辅助具有大晶粒尺寸和优异覆盖度的钙钛矿晶体生长。为了解决这些问题，我们开发了完全环境空气和无抗溶剂的方法来制造具有钙钛矿基复合材料的PSC（即，MAPbI 3-xClx-Cu：NiO、MAPbI 3-xClx-Cu：NiO-碳-石墨和MAPbI 3-xClx-Al 2 O3）。这种具有界面工程的基于钙钛矿复合材料的电池产生了18.6%的高功率转换效率（PCE）和78.3%的填充因子（FF），具有优异的再现性。更重要的是，靶细胞表现出无荧光的行为和空气、光和热稳定性的显著增强。与原始细胞相比，目标装置显示出显著的长期稳定性，在280天内保留了几乎100%的Voc和Jsc的初始值，以及约94%的FF和PCE。
For commercialization of perovskite solar cells (PSCs), the device stability issues attributed to degradation of perovskite material, photo and thermal instability, and photocurrent density-voltage (J-V) hysteresis behavior should be solved. Furthermore, most of presented high efficiency PSCs utilize an antisolvent-strategy to assist perovskite crystal growth with large grain-size and excellent coverage. To solve such issues, we developed fully-ambient-air and antisolvent-free processes for the fabrication of PSCs with perovskite-based composites (i.e., MAPbI3-xClx-Cu:NiO, MAPbI3-xClx-Cu:NiO-carbon-graphite and MAPbI3-xClx-Al2O3). Such perovskite composites based cells with interface engineering yielded high power-conversion-efficiency (PCE) of 18.6% and fill factor (FF)of 78.3% with excellent reproducibility. More importantly, the target cells showed hysteresis-free behavior and dramatic enhancement in air-, photo- and thermal-stability. Compared to the pristine cells, the target device showed remarkable long-term stability with retaining almost 100% of the initial values ofVocandJsc, and ~94% ofFFandPCEover 280 days.