The electrons and holes in a semiconductor can bind together to form excitons, which in turn couple together at higher carrier densities to create biexcitons. Here, the authors show, contrary to expectation, that biexcitons can outlive excitons at carrier densities close to the appearance of unbound electrons and holes.
- Mehran Shahmohammadi
- Gwénolé Jacopin
- Benoit Deveaud
