PL spectra of ZnO NSs produced via annealing of LBZA NSs in air at 400°C. The NSs were annealed for 10 s, 10 min, 20 min, 30 min and 60 min. The spectra were normalized to intensity of the NBE band. The excitation wavelength was 325 nm and the power density was approximately 3 mW/mm2 for all samples.
Tarat et al. Nanoscale Research Letters 2014 9:11 doi:10.1186/1556-276X-9-11