Thermogravimetry-differential scanning calorimetry (TG-DSC) analysis of .
XRD patterns for ZN300-ZN500 (the number in ZN300 indicates the preparation temperature in °C) nanostructures deposited by ultrasonic pyrolysis.
FESEM side and top images of the ZN400 (a) and the ZN450 (b).
TEM images of the ZN400 (a) and the ZN450 (b).
High-resolution TEM image of the ZN400.
Raman shifts of of the ZN400 (a) and the ZN450 (b).
(a) PL spectra of the ZN’s taken at room temperature and (b) of ZN400 at temperature scan of . The inset shows the temperature dependence of free exciton (엯; ) and excitons bound neutral donor (◻, ; ▴, ; and ●, ) of the ZN400.
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