Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
How to Stabilize the Current of Efficient Inverted Flexible Perovskite Solar Cells at the Maximum Power Point
Small ( IF 13.0 ) Pub Date : 2024-01-18 , DOI: 10.1002/smll.202310568 Xingjuan Ma 1, 2 , Wenli Peng 1 , Shusen Jiang 2 , Mingpo Li 1 , Aihua Zhang 3 , Cheng Li 1, 4 , Xin Li 1
Small ( IF 13.0 ) Pub Date : 2024-01-18 , DOI: 10.1002/smll.202310568 Xingjuan Ma 1, 2 , Wenli Peng 1 , Shusen Jiang 2 , Mingpo Li 1 , Aihua Zhang 3 , Cheng Li 1, 4 , Xin Li 1
Affiliation
|
Inverted flexible perovskite cells (fPSCs) have attracted much attention for their high efficiency and power per weight. Still, the steady–state output is one of the critical factors for their commercialization. In this paper, it is found that the steady–state current of inverted fPSCs based on nickel oxide nanoparticles (n-NiOx) continuously decreases under light illumination. Conversely, those based on magnetron-sputtered NiOx (sp-NiOx) exhibit the opposite result. Based on visualization of ion migration in the photoluminescence (PL) imaging microscopy tests, the discrepancies in the buried surfaces lead to the differences in ion migration in perovskite films, which triggers the temporary instability of the output current of devices during operation. The DFT theoretical calculation and experimental results reveal that NiOx films with different contents of Ni vacancies can modulate the crystallization of the perovskite films on the NiOx surfaces. Tuning the crystallization of the perovskite films is essential to stabilize the output current of fPSCs at a steady state. To demonstrate that, capsaicin is doped into the perovskite solutions to improve the quality of the perovskite buried interface. Finally, the corresponding fPSCs exhibit outstanding efficiency and stability during operation. These results provide valuable scientific guidance for fabricating fPSCs with stable operation under illumination conditions.
中文翻译：
如何稳定高效倒置柔性钙钛矿太阳能电池最大功率点的电流
倒置柔性钙钛矿电池（fPSC）因其高效率和单位重量功率而备受关注。尽管如此，稳态输出仍然是其商业化的关键因素之一。本文发现，基于氧化镍纳米粒子（n-NiO x ）的倒置fPSCs的稳态电流在光照射下不断减小。相反，基于磁控溅射 NiO x (sp-NiO x ) 的材料表现出相反的结果。基于光致发光（PL）成像显微镜测试中离子迁移的可视化，埋藏表面的差异导致钙钛矿薄膜中离子迁移的差异，从而引发器件在运行过程中输出电流的暂时不稳定。 DFT理论计算和实验结果表明，不同Ni空位含量的NiO x薄膜可以调节NiO x表面钙钛矿薄膜的结晶。调节钙钛矿薄膜的结晶对于将 fPSC 的输出电流稳定在稳态至关重要。为了证明这一点，将辣椒素掺杂到钙钛矿溶液中以提高钙钛矿埋入界面的质量。最后，相应的 fPSC 在运行过程中表现出出色的效率和稳定性。这些结果为制造在光照条件下稳定运行的 fPSC 提供了有价值的科学指导。
更新日期：2024-01-18
中文翻译：
如何稳定高效倒置柔性钙钛矿太阳能电池最大功率点的电流
倒置柔性钙钛矿电池（fPSC）因其高效率和单位重量功率而备受关注。尽管如此，稳态输出仍然是其商业化的关键因素之一。本文发现，基于氧化镍纳米粒子（n-NiO x ）的倒置fPSCs的稳态电流在光照射下不断减小。相反，基于磁控溅射 NiO x (sp-NiO x ) 的材料表现出相反的结果。基于光致发光（PL）成像显微镜测试中离子迁移的可视化，埋藏表面的差异导致钙钛矿薄膜中离子迁移的差异，从而引发器件在运行过程中输出电流的暂时不稳定。 DFT理论计算和实验结果表明，不同Ni空位含量的NiO x薄膜可以调节NiO x表面钙钛矿薄膜的结晶。调节钙钛矿薄膜的结晶对于将 fPSC 的输出电流稳定在稳态至关重要。为了证明这一点，将辣椒素掺杂到钙钛矿溶液中以提高钙钛矿埋入界面的质量。最后，相应的 fPSC 在运行过程中表现出出色的效率和稳定性。这些结果为制造在光照条件下稳定运行的 fPSC 提供了有价值的科学指导。
京公网安备 11010802027423号