Aligned selenium microtubes array: Synthesis, growth mechanism and photoelectrical properties

► Se microtubes array was synthesized via a vapor deposition method using only Se powder. ► The microtubes were characterized by Raman, XRD, SEM, TEM and UV-vis spectroscopy. ► The growth mechanism for the array was proposed through SEM-TEM images. ► The photoconductivity of the array encapsulated in PVA matrix was successfully tested.