Stability of small area perovskite solar cells has been notably improved, but large area modules have not been proven stable. Recently in Joule, E. Bi and coworkers present a highly stable perovskite module that kept 90% of its initial efficiency after 1,000 h operation under illumination. The secret is an iodide diffusion blocking layer (DBL) added at the module interconnection. The DBL with 2D graphitic carbon nitride (g-C₃N₄) flakes can suppress iodide diffusion at the interconnection and prevent electrode corrosion.

中文翻译：

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碘化物块，保存钙钛矿模块

小面积钙钛矿太阳能电池的稳定性已得到显着改善，但尚未证明大面积模块的稳定性。E. Bi和他的同事们最近在Joule中展示了一种高度稳定的钙钛矿组件，该组件在光照下运行1000小时后仍能保持其初始效率的90％。秘诀是在模块互连处添加了碘化物扩散阻挡层（DBL）。具有2D石墨氮化碳（gC ₃ N ₄）薄片的DBL可以抑制互连处的碘化物扩散并防止电极腐蚀。