Interaction and Fabrication of Optical Sensors based on OPV functionalized Single Walled Carbon Nanotubes

Abstract

OPV is an optically active polymer. SWNT functionalized with OPV acts as hybrid donor acceptor system which have diverse potential applications such as electro optics and foldable electronics. We functionalized pristine and preseparated metallic and semiconducting SWNT with OPV. Critical coagulation concentration was determined for each of the solution. Interaction in the aggregated, functionalized SWNT was further characterized using high resolution microscopy and spectroscopy. Specific binding of OPV with semiconducting SWNT was acertained. Photon induced aggregation only for Semiconducting SWNT functionalized with OPV observed with time. Metallic SWNT do not show any interaction with OPV neither photon induced aggregation nor kinetic aggregation with highest concentration. Devices such as molecular FET or thin film of SWNT were fabricated using lithography. In this thesis, we provide the IV measurements of non-functionalized and OPV functionalized pristine and Semiconducting SWNT (Oligophenylynevinylene) in absence and presence of light.Utilizing the charge transfer of optically active molecule OPV, we modulate the conductivity of SWNT. These functionalized tubes used to fabricate electro optical sensor and devices.