Aligned selenium microtubes array vertically grown on a silicon substrate was synthesized in a tubular furnace under argon flow at an evaporation temperature of 300 C. The microtubes were characterized byRaman spectroscopy, X-ray diffraction, UV–vis spectroscopy, scanning and transmission electron microscopy. The photoelectrical properties of the microtube array with light were investigated. It was found a stable relative increase of the conductivity by 180% when the sample was taken from the dark and exposed with tungsten light and a sharp on/off switching behavior. These results hold promise for the fabrication of microtubes-detector arrays
Aligned selenium microtubes array: Synthesis, growth mechanism and photoelectrical properties
FILIPPO, EmanuelaMembro del Collaboration Group
;MANNO, Daniela ErminiaMembro del Collaboration Group
;SERRA, Antonio
Membro del Collaboration Group
2011-01-01
Abstract
Aligned selenium microtubes array vertically grown on a silicon substrate was synthesized in a tubular furnace under argon flow at an evaporation temperature of 300 C. The microtubes were characterized byRaman spectroscopy, X-ray diffraction, UV–vis spectroscopy, scanning and transmission electron microscopy. The photoelectrical properties of the microtube array with light were investigated. It was found a stable relative increase of the conductivity by 180% when the sample was taken from the dark and exposed with tungsten light and a sharp on/off switching behavior. These results hold promise for the fabrication of microtubes-detector arraysI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
