Figure 3.

Micro-PL spectra of annealed ZnO NRs grown on the p+-Si(111)substrates. (a) 200°C, (b) 400°C, (c) 600°C, and (d) 800°C, respectively.

Tsai et al. Nanoscale Research Letters 2012 7:664   doi:10.1186/1556-276X-7-664
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