Over the years our attention has been focused on the preparation, characterization, property evaluation and applications of boron nitride (BN) nanotubes, 5 which are boron–nitrogen semiconductors with a band gap nearly independent of diameter and chirality. The large and stable gap makes BN nanotubes promising candidates for various luminescence applications. 6,7 One of the most important challenges at the present stage is to explore the possible luminescence centres ...
