4. Conclusion

From what has been said above, it is clear that luminescent nanomaterials, based on semiconductors or doped ceramics, present special features both in terms of modifying and controlling their emission, and in terms of possible interactions with their environment. This can be controlled by their size, but also by fine engineering of the defects and dopants incorporated. In addition, energy transfer at very small sizes offers unique possibilities for spectral modification. These nanomaterials are likely to have a major impact on the manufacture of optical frequency converters.

The main challenge is, of course, to have objects small enough to be integrated into existing technologies, saving material or enabling existing technologies to be miniaturized or even replaced. New classes of materials (such as atomic single-leaf materials or those with unique colored centers,...