Figure 6.

Typical UV-VIS optical absorption spectrum of ZnO quasi-NRs. Two separate excitonic characters, namely A- and B-excitons, were observed in the spectrum, reflecting the ZnO quasi-NRs are high-crystallinity in nature.

Ali Umar et al. Nanoscale Research Letters 2011 6:564   doi:10.1186/1556-276X-6-564
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