Yushan Meng, Chenglin Liu, Jingjing Fei, Yue Xu, Yidan Wang, Jing Zhang, Chunbo Duan, Chunmiao Han, Hui Xu. "Excited state reversal in copper iodide clusters enables 100% exciton radiation." Nature Communications (2025). https://doi.org/10.1038/s41467-025-67664-x