Copper phthalocyanine tetrasulfonate and CdS sensitization of SnO2 semiconductor electrodes to visible light

Authors

  • Ishmael D. S. Ordoñez Materials Science Research Laboratory, Institute of Chemistry, University of the Philippines, Diliman, Quezon City
  • Arnel V. Mejorada Materials Science Research Laboratory, Institute of Chemistry, University of the Philippines, Diliman, Quezon City

DOI:

https://doi.org/10.26534/kimika.v11i1.29-32

Keywords:

copper phthalocyanine tetrasulfonate, calcium, sulfide, SnO2 semiconductor electrodes, visible light, sensitization

Abstract

SnO2 optically transparent electrodes (OTE) were sensitized to visible light excitation through the use of copper phthalocyanine tetrasulfonate and cadmium sulfide. These dyes were blended with an ionically conducting polymer (quaternized poly-4-vinylpyridine-QPVP) and then cast onto the surface of SnO2 semiconductor electrodes by means of solvent evaporation producing thin films. The modified electrode is placed in contact with aqueous hexacyanoferrate (II, III) redox couple solution and photoelectrochemical techniques were used to investigate the basic processes involved in the dye sensitization of SnO2 OTE's. Photoresponse measurements gave microampere currents upon illumination by visible light. The magnitude and direction of these photocurrents (photoanodic or photocathodic) were dependent on the applied potential.

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How to Cite

Ordoñez, I. D. S., & Mejorada, A. V. (1995). Copper phthalocyanine tetrasulfonate and CdS sensitization of SnO2 semiconductor electrodes to visible light. KIMIKA, 11(1), 29–32. https://doi.org/10.26534/kimika.v11i1.29-32

Issue

Vol. 11 (1995)

Section

Research Articles

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