Study on photoconductivity of dye-polymer-based solid-state thin film.
In this article, we describe a solid-state photoelectrochemical cell for light detection. Safranine-T dye mixed with polyvinyl alcohol (PVA) solution was deposited on a conducting and transparent indium-tin-oxide (ITO)-coated glass that was used as one electrode and another ITO-coated glass as the counterelectrode. A solid polymeric electrolyte consisting of polyethylene oxide-ammonium perchlorate-ethylene carbonate and propylene carbonate with suitable weight ratio was prepared and sandwiched between these two ITO-coated glass electrodes, which were separated by a Teflon spacer about 50 microm thick. The cell was biased with a direct current source to make the dye and PVA-coated ITO as the anode and the other ITO as the cathode. On illumination by a tungsten lamp, from the cathode side, the change of photocurrent was measured. The dark current-voltage characteristics and the growth and decay of the photocurrent for steady and pulsed illumination were studied.
Dey
S K
SK
Condensed Matter Physics Research Centre, Department of Physics, Jadavpur University, Calcutta, India.
Manik
N B
NB
D001709:Biotechnology / Q000295:instrumentation / Q000379:methods; D004396:Coloring Agents / Q000737:chemistry*; D004563:Electrochemistry; D007204:Indium / Q000737:chemistry; D008027:Light; D008956:Models, Chemical; D010100:Oxygen / Q000737:chemistry; D011108:Polymers / Q000737:chemistry*; D013997:Time Factors; D014001:Tin / Q000737:chemistry
D004396:Coloring Agents; D011108:Polymers; D007204:Indium; D014001:Tin; D010100:Oxygen