Photoelectric measurements on chloroaluminium phthalocyanine/titanium oxide heterojunctions

Asim K. Ray, S. M. Tracey, S. N.B. Hodgson

    Research output: Contribution to journalArticle

    7 Citations (Scopus)

    Abstract

    Heterojunctions were constructed, consisting of a 50 nm thick sol-gel derived titanium dioxide (TiO2) layer and a 500 nm thick thermally evaporated chloroaluminium phthalocyanine (ClAlPc) film sandwiched between an indium tin oxide (ITO) base and a gold counter electrode. It is found from short circuit current measurements that TiO2 films can be sensitised to wavelengths outside their intrinsic sensitivity by using phthalocyanine dyes. Photoelectrical measurements were performed on the devices using a solar simulator at six different intensities varying from 0.18 to 2.0 mW/cm2. The overall conversion efficiency of the cells was found to reach maximum at the intensity of light of 1.12 mW/cm2 from the solar simulator.

    Original languageEnglish
    Pages (from-to)15-22
    Number of pages8
    JournalJournal of Sol-Gel Science and Technology
    Volume22
    Issue number1-2
    DOIs
    Publication statusPublished - 1 Sep 2001

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