Figure 2: PL spectral evolution with increased crystal aspect ratio.
From: Directional charge separation in isolated organic semiconductor crystalline nanowires
PL spectra of (a) a nanocrystallite with an AR approximately equal to 1, (b) a crystal with an AR >1 and <3 and (c) a nanowire with an AR ≥3 with corresponding PL images, Scale bar, 300 nm. Note the qualitative changes in PL spectra indicating the structural envelope.
