Excitonic photoluminescence spectra at 10 K of ZnO nanorod layers deposited at different growth temperatures. The growth temperature is kept at 480°C, 530°C, or 550°C, illustrated by spectrum A, B, and C, respectively. The ZnO nanorod layers are deposited onto ITO/SGL substrates from aqueous solution at similar spray rate (2.2 ml/min). Spectrum C is shown with fitting results, Raman spectrum of the corresponding ZnO nanorod sample is presented in Figure 1 and the SEM image is presented in Figure 3a. The SEM image of the sample corresponding to spectrum A is presented in Figure 3b.
Kärber et al. Nanoscale Research Letters 2011 6:359 doi:10.1186/1556-276X-6-359