i have got the following photo luminescence spectra data of AU-PD tio2 film for diffrent depotion rates ,can some one help me to analyse it broadly? can we discuss it ??
For the emission spectra obtained at an excitation wavelength of 350 nm an intense band is observed at 700 nm, this band is generated by the second harmonic, therefore it is not a band associated with your material.
No, when you excited with 350 nm that band appears exactly twice the excitation (700 nm), for 450 nm the band with twice the excitation is not observed because your measurements do not cover up to 900 nm. It is recommended to measure about 20 mm above the excitation wavelength and 20 nm below twice the excitation
Noé Enríquez-Sánchez thank you very much ! what wavelength should i choose to excite and what is the method to find the excitation wave length. and also if I have an fto substrate and other glass substrate , will that make any difference ???or pl will be the same .