Low Cost Flexible Electronic Devices by use of Functional Nano-Inks

Abstract

Printed Electronics is an emerging field providing fast manufacturing, low cost, flexible electronics for vast applications form healthcare, environment monitoring, IoT application, etc. Printing of such Electronics is done with Functionalised Inks. Printing methods that are compatible with the Functional Inks, are used for the fabrication of such Electronics. This Thesis reports the development and characterization of carbon based Resistive Ink, and its use for the fabrication of a low voltage Flexible Heater (9 cm × 10 cm) on a PET substrate by Screen Printing method, which was test for its performance under different voltages and under different bend angles. This Heater was able to provide 45 degree Celsius with power consumption of 0.16 Watt per square cm at 6 V. Ammonia Gas Sensor was developed using Silicon Dioxide based dielectric Ink. Four different polymers were tried for development of this Ink, at four different concentration ratios of Silicon Dioxide and Polymer. Ammonia Sensor developed using each ink was tested for its sensing capacity and is being reported in this Thesis. Further, Tungsten oxide based Electrochromic Ink and study on its Electrochromic behaviour has been reported.