P3HT Thin Films And Their Optical Characterization

This work presents the most extensively researched organic semiconducting polymer, poly(3-hexylthiophene) or P3HT in its thin film form. This paper mainly deals with the optical characterizations on P3HT thin films. The optical investigations include UV-Visible spectroscopy, band gap, photoluminescence and Raman spectroscopy on spin coated and annealed P3HT thin films. Optical energy band gap of annealed P3HT film is determined using Tauc's plot of direct energy band gap and it shows a tendency towards developing photosensing applications using P3HT thin films.