ZnO displays three PL peaks :

1-UV near-band-edge emission peak around 380 nm

2- a green emission around 510 nm

3- a red emission around 650 nm .

Regards

Dear

ZnO:Zn is a well-known EL phosphor for (back)lighting foils and vacuum fluorescent tubes. It has a white to pale green body colour and shows efficient green luminescence at 510 nm, whle the decay time is almost 2 µs. Your spectra looks strange and I assume that both samples comprise impurity ions causing these bands in the red range. However, clean ZnO:Zn shows just a single broad band with a FWHM of

All the best for your research,

Thomas

Read this you will get an idea about your aim

Thomas Justel Thank you for your response . EDX of my sample didn't show any other element . Because of the diff. Peaks I did not get any ref for it as well .

Thank you for wishing me luck

Regards

Abdelkader Dehbi Thank you for your response

M. S. Alkathy Thanks a lot . This will be really helpful for me .

Regards

Dear Aishwarya, EDX has a sensitivity limit of the order of typically 0.1-0.3% so is not useful for detecting impurities. Do SIMS ablation of your sample and you wil be surprised of how many metal ions apart from Zn2+ you will find.