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. 2021 Dec 22;12(1):19. doi: 10.3390/nano12010019

Figure 2.

Figure 2

Representative PL spectra of the ZnO:N films deposited in a gas mixture of Ar:O2:N2 = 50:10:40:(a) as-deposited (sample 2.1) and (b) after RTA at 550 °C (sample 2.3).