SWCNT photocathodes sensitised with InP/ZnS core-shell nanocrystals

Thomas Macdonald, Daniel Tune, Melissa Dewi, Joseph Bear, Paul McNaughter, Andrew Mayes, William Skinner, Ivan Parkin, Joseph Shapter, Thomas Nann

    Research output: Contribution to journalArticlepeer-review

    15 Citations (Scopus)


    Increasing the light harvesting efficiency of photocathodes is an integral part of optimising the future efficiencies of solar technologies. In contrast to the more extensively studied photoanode systems, current state-of-the-art photocathodes are less efficient and are commonly replaced with rare and expensive materials such as platinum group metals. The significance of photocathodes is in the development of tandem electrodes, enhancing the performance of existing devices. Carbon nanotubes are promising candidates for photocathodes, which, in addition to their p-type conductivity and catalytic properties, possess a suite of unique optical and electrical attributes. This work describes the fabrication of single walled carbon nanotube (SWCNT) photocathodes sensitised with indium phosphide/zinc sulfide (InP/ZnS) core-shell nanocrystals (NCs). Under air mass (AM) 1.5 conditions, the sensitisation of SWCNT photocathodes with InP/ZnS NCs increased the photocurrent density by 350% of the unsensitised output. This significant enhancement of current density demonstrates the potential of InP/ZnS NCs as effective sensitisers to improve the performance of carbon-based photocathode thin films.

    Original languageEnglish
    Pages (from-to)3379-3384
    Number of pages6
    JournalJournal of Materials Chemistry C
    Issue number16
    Publication statusPublished - 28 Apr 2016


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