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Showing 1–3 of 3 results
Advanced filters: Author: Junjiang Tian Clear advanced filters

  • Varying growth temperatures enables the tuning of the degree of disorder, which is fully described by the absence/presence of medium-range order and temperature-dependent densities of nanocrystallites, and electrical conductivity in amorphous monolayer carbon films.

    • Huifeng Tian
    • Yinhang Ma
    • Lei Liu
    Research
    Nature
    Volume: 615, P: 56-61

  • An approach to boost the power conversion efficiencies (PCEs) of ferroelectric photovoltaics (PVs) is proposed based on the Schottky barrier effect. This approach leverages the thinning of a ferroelectric film to somewhere close to the depletion width, which can simultaneously suppress the recombination and lower the series resistance. Using this approach, we achieve a PCE up to 2.49% (under 365-nm ultraviolet illumination) in the 12-nm Pb(Zr0.2Ti0.8)O3 ultrathin films. Our study provides insightful guidance on how to design and tailor the ferroelectric films to achieve high PCEs, and also demonstrates the great potential of ferroelectrics for use in ultrathin-film PV devices.

    • Zhengwei Tan
    • Lanqing Hong
    • Jun-Ming Liu
    ResearchOpen Access
    NPG Asia Materials
    Volume: 11, P: 1-13