SWCNT/Inorganic polymer nanocomposite: a new class of transparent conductor and UV-Vis photo – generator

摘要

Synthesis and optical, electronic and optoelectronic properties of a photo-active SWCNT/(Pb, Zn)-phosphate glass composite have been reported. Absorption spectrum of SWCNTs of the composite differs significantly from that of its film which has been attributed to the host related internal stress induced conformational deformations and subsequnt modulation of their band structure. Conductivity studies show that incorporation of SWCNTs in the glass increases the conductivity of the latter by almost hundred thousand times. UV-Vis light-induced ESR spectrum of the composite exhibits an enhancement of the conduction electron-signal of its SWCNTs with concomitant appearance of a new signal at the lower field region which owes its origin to the (Pb~(+3)) holes. A phenomenon of charge separation in the system du to light induced release of electrons from the Pb~(+2) – sites of the host and capture of those electrons by the SWCNTs is thus observed. The material is prospective for use both as transparent conductor and solar photo-current generator.