Zn2+ addition: A facile way to obtain CdTe nanocrystals powders with enhanced fluorescence emission

- The CdTe NCs are synthesized in aqueous solution with thioglycollic acid.
- Zn2+ addition can greatly enhance the fluorescence emission of the NCs.
- Zn2+ addition can also make the NCs settle rapidly.
- Dissolution in NaOH solution reveals a good reuse of the NCs in a colloid state.