Synthesis and optical characterization of pure and nickel doped gallium nitride nanocrystals

- GaN nanoparticles are single nanocrystals.
- Addition of dopant reduces the effective band gap of the material.
- Synthesized GaN nanoparticles show the multi-chromatic emission spectra.
- The traditional PL quencher nickel acts as luminescence promoter.
- Decays become faster with increase in dopant concentration.