Deconvolution of time of flight photocurrent transients and electronic response time in columnar liquid crystals

Abstract

The attempts to create thinner samples of columnar discotic liquid crystals in order to avoid stack defects and measure charge carrier motion on low defect density stacks by the time of flight technique, inevitably leads to problems. The time of flight becomes faster while the electronic response time becomes slower as a result of the increasing sample capacitance. Eventually the time of flight transit time becomes indiscernible due to the system response distortion. This article demonstrates the recovery of the time of flight signal from such distorted data by analyzing the nature of the signal and using this analysis to deconvolve a digitally acquired signal.