Figure 3
From: Fabrication of GaN nano-towers based self-powered UV photodetector

(a) RT-PL spectra and (b) Raman spectra of as-grown GaN-NTs.
From: Fabrication of GaN nano-towers based self-powered UV photodetector
(a) RT-PL spectra and (b) Raman spectra of as-grown GaN-NTs.