Heterojunction Solar Cells Based on Silicon and Composite Films of Graphene Oxide and Carbon Nanotubes

LePing Yu, Daniel Tune, Cameron Shearer, Joseph Shapter

    Research output: Contribution to journalArticlepeer-review

    20 Citations (Scopus)

    Abstract

    Graphene oxide (GO) sheets have been used as the surfactant to disperse single-walled carbon nanotubes (CNT) in water to prepare GO/CNT electrodes that are applied to silicon to form a heterojunction that can be used in solar cells. GO/CNT films with different ratios of the two components and with various thicknesses have been used as semitransparent electrodes, and the influence of both factors on the performance of the solar cell has been studied. The degradation rate of the GO/CNT-silicon devices under ambient conditions has also been explored. The influence of the film thickness on the device performance is related to the interplay of two competing factors, namely, sheet resistance and transmittance. CNTs help to improve the conductivity of the GO/CNT film, and GO is able to protect the silicon from oxidation in the atmosphere.

    Original languageEnglish
    Pages (from-to)2940-2947
    Number of pages8
    JournalChemSusChem
    Volume8
    Issue number17
    DOIs
    Publication statusPublished - 1 Sep 2015

    Keywords

    • carbon
    • energy conversion
    • graphene
    • nanotubes
    • silicon

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