沙特阿卜杜拉国王科技大学Stefaan De Wolf团队开发了具有定制的二维/三维异质结的湿热稳定钙钛矿型太阳能电池。相关研究成果发表在2022年2月17日出版的国际学术期刊《科学》。

为了使具有高功率转换效率（PCEs）的钙钛矿太阳能电池（PSCs）商业化，它们必须实现长期稳定性，这通常通过加速降解试验进行评估。PSCs的持久障碍之一是成功通过湿热试验（85摄氏度和85%相对湿度），这是验证商用光伏（PV）组件稳定性的标准。

该文中，研究人员通过裁剪2D钙钛矿层的尺寸碎片来制备湿热稳定的PSCs，2D钙钛矿层在室温下与碘油氨分子形成，在电子选择接触时钝化钙钛矿表面。在湿热试验条件下超过1000小时后，产生的倒置PSCs产生24.3%的PCE，并保留其初始值的95%以上，从而满足光伏组件试验稳定性的关键标准之一。

附：英文原文

Title: Damp heat–stable perovskite solar cells with tailored-dimensionality 2D/3D heterojunctions

Author: Randi Azmi, Esma Ugur, Akmaral Seitkhan, Faisal Aljamaan, Anand S. Subbiah, Jiang Liu, George T. Harrison, Mohamad I. Nugraha, Mathan K. Eswaran, Maxime Babics, Yuan Chen, Fuzong Xu, Thomas G. Allen, Atteq ur Rehman, Chien-Lung Wang, Thomas D. Anthopoulos, Udo Schwingenschlgl, Michele De Bastiani, Erkan Aydin, Stefaan De Wolf

Issue&Volume: 2022-02-17

Abstract: In order for perovskite solar cells (PSCs) with high power conversion efficiencies (PCEs) to be commercialized, they must achieve long-term stability, which is usually assessed with accelerated degradation tests. One of the persistent obstacles for PSCs has been successfully passing the damp-heat test (85 Celsius and 85% relative humidity), which is standard to verify the stability of commercial photovoltaic (PV) modules. Here, we fabricate damp heat–stable PSCs by tailoring the dimensional fragments of 2D-perovskite layers, formed at room temperature with oleylammonium-iodide molecules, that passivate the perovskite surface at the electron-selective contact. The resulting inverted PSCs deliver a 24.3% PCE and retain >95% of their initial value after >1000 hours at damp-heat test conditions, thereby meeting one of the critical industrial stability standards for PV modules.

DOI: abm5784

Source: https://www.science.org/doi/10.1126/science.abm5784#con20