Stabilizing Fullerene for Burn-in-Free and Stable Perovskite Solar Cells under Ultraviolet Preconditioning and Light Soaking
Stabilizing Fullerene for Burn-in-Free and Stable Perovskite Solar Cells under Ultraviolet Preconditioning and Light Soaking
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DOI：
10.1002/adma.202006910
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发表时间：
2021-02-04
影响因子：
29.4
通讯作者：
Yu, Xuegong
中科院分区：
文献类型：
--
作者：
Hang, Pengjie;Xie, Jiangsheng;Yu, Xuegong
在钙钛矿太阳能电池变得商业化之前，使钙钛矿太阳能电池具有可持续性并在自然光照射下稳定运行至关重要。在此，将少量小分子红菲绕啉（Bphen）引入到[6,6]-苯基-C-61-丁酸甲酯中，发现Bphen可以通过形成热力学更稳定的电荷转移络合物来很好地稳定C-60-笼。这种强化复合物用作光照钙钛矿/SnO2 侧的中间层，实现了效率为 23.09%（认证为 22.85%）的冠军器件。最重要的是，在模拟紫外线预处理和光浸泡测试下，所得器件的稳定性可以接近满足国际电工委员会61215标准的要求。在 60 摄氏度的最大功率点跟踪 1100 小时紫外线照射和 1000 小时连续照明后，它们分别可以保留超过 95% 和 92% 的初始效率。
It is crucial to make perovskite solar cells sustainable and have a stable operation under natural light soaking before they become commercially acceptable. Herein, a small amount of the small molecule bathophenanthroline (Bphen) is introduced into [6,6]-phenyl-C-61-butyric acid methyl ester and it is found that Bphen can stabilize the C-60-cage well through formation of much more thermodynamically stable charge-transfer complexes. Such a strengthened complex is used as an interlayer at the in-light perovskite/SnO2 side to achieve a champion device with efficiency of 23.09% (certified 22.85%). Most importantly, the stability of the resulting devices can be close to meeting the requirements of the International Electrotechnical Commission 61215 standard under simulated UV preconditioning and light-soaking testing. They can retain over 95% and 92% of their initial efficiencies after 1100 h UV irradiation and 1000 h continuous illumination of maximum power point tracking at 60 degrees C, respectively.