The crystallization methods/parameters are very important as far as the quality of ZnO nanoparticle is concern. If so, You will be getting a peak at ~ 370 nm.
If not, there will be an additional broad absorption peak in the visible range.
Following paper shows the range is 355-392 nm. Depending on the partcile size of your nano ZnO absorption peak may shift.
Satyanarayana Talam, Srinivasa Rao Karumuri,and Nagarjuna Gunnam, Synthesis, Characterization, and Spectroscopic Properties of ZnO Nanoparticles,ISRN Nanotechnology Volume 2012 (2012), Article ID 372505, 6 pages, http://dx.doi.org/10.5402/2012/372505.
The spectrum of ZnO nanoparticles depends on method of fabrication, size , shape and temperature. Several methods of fabrication result in ZnO nanoparticles that present exciton peak in the range of 360-380 nm
Yes, the UV-Vis spectrum of ZnO nanoparticles depends on method of fabrication, particle size , shape etc. as Dr Hatem & Dr Patricia mentioned.
The exciton peak falls in the range of 360-390 nm for ZnO nanoparticles.
Range of UV- Vis spectrum of ZnO nanoparticles is 350-380nm. But there is no optimum exciton peak of ZnO nanoparticles. Further validation of optical properties ZnO nanoparticles can be conducted by measuring the bandgap value by utilizing Tauc plot and also measure the urbach energy level.
Yes, I agree peaks come around 360-380 nm but what is the exact transiation take place
Yes, ZnO peak come around 370 nm but it's exactly depend on the fabrication technique and the optimised parameters used in that technique.
ZnO peaks come around 360-390nm,depending upon the type of synthesis and temperature.
The UV-visible spectrum of ZnONPs in the range of 360-390 nm but it depends on the method of fabrication, particle size , shape etc.
350nm-390nm is general range to observed absorption spectra but it varies with several factor such as ,Doping Concentration,Method of Prepration ,Contaminants
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