Figure 2.

Electroluminescence spectra of the LEDs at an injection current of 3 mA for the as grown and annealed ZnO NTs in different ambients under forward bias of 25 V and it shows the shift in emission peak after annealing in different ambient.

Alvi et al. Nanoscale Research Letters 2011 6:130   doi:10.1186/1556-276X-6-130
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