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Showing 1–3 of 3 results
Advanced filters: Author: Ken Durose Clear advanced filters

  • Antimony selenide is a promising photovoltaic material, but the presence of point defects degrades performance. Here, the authors use positron annihilation spectroscopy combined with theory to detect and identify vacancy-type point defects.

    • David J. Keeble
    • Theodore D. C. Hobson
    • Ken Durose
    ResearchOpen Access
    Nature Communications
    Volume: 17, P: 1-9

  • Copper-doped cadmium telluride thin-film solar cells have high efficiency, but limited hole density and Cu diffusion allow little room for further improvements in device performance. Now, arsenic-doped cadmium telluride thin films show enhanced hole density and lower dopant diffusivity leading to 20.8%-efficient solar cells.

    • Ken Durose
    News & Views
    Nature Energy
    Volume: 4, P: 825-826

  • Point defects compromise the electronic performance of hybrid perovskites, yet no experimental identifications have been reported. Here, the authors, for the first time, identify lead monovacancy defect in MAPbI3 using positron annihilation lifetime spectroscopy with the aid of density functional theory.

    • David J. Keeble
    • Julia Wiktor
    • Werner Egger
    ResearchOpen Access
    Nature Communications
    Volume: 12, P: 1-7