Figure 1.

5-K PL spectra of ZnO/Mg0.1Zn0.9O single QWs with different well widths from 1.4 to 7.5 nm. The spectra were normalized and shifted vertically for clarity.

Lv et al. Nanoscale Research Letters 2012 7:605   doi:10.1186/1556-276X-7-605
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