New Tungsten oxide-based Hole Transport Layer for OPV

Détail

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Technology

    • Titre New Tungsten oxide-based Hole Transport Layer for OPV
    • Description This technology concerns a new HTL material and its preparation method, based on tungstate ions (W6+) and tungstate polyanions in an alcohol solution. The ionic form allows improving the stability of the solution (no sedimentation or aggregation).
    • Bénéfices - High stability in time (> 6 months of storage): no aggregation / sedimentation
      - OPV performance comparable to PEDOT:PSS
      - Low cost preparation process
      - Non-toxic
    • Nouveauté PEDOT:PSS is the most used hole transport layer (HTL) in organic photovoltaic technologies. However, it has several drawbacks, such as residual acidity or low compatibility with processes like inkjet deposition. To overcome these defects, competitor HTLs are developed, such as tungsten oxide in the form of sol-gel or colloidal solution. But these solutions exhibit a low stability in time. The aim of the invention is to provide tungsten-based solutions with improved stability in time (allowing a longer storage time) and performance.
    • Mots clés Material, photovoltaic
    • Secteurs Chemicals, Materials & plant-based materials