Excitons – electron-hole bound states important for optoelectronics – are typically observed only in weakly-doped semiconductors or insulators. Here, an exciton with a large binding energy of 375 meV is observed in a highly-doped van der Waals degenerate semiconductor, remaining stable up to room temperature.
- Yueshan Xu
- Junjie Wang
- Zhi-Guo Chen
