Patent · US Active

Surface engineered organic-inorganic hybrid perovskite nanocrystals and applications thereof

US12180400B2 · kind B2 · utility

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Key dates

Filing dateOct 11, 2019
Grant dateDec 31, 2024
Priority date—
Expiry dateApr 25, 2041

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH10K30/50
  • WIPO fieldSurface technology, coating
  • WIPO sectorChemistry

Abstract

In one aspect, organic-inorganic nanoparticle compositions are described herein comprising engineered surfaces which, in some embodiments, reduce non-radiative recombination mechanisms, thereby providing optoelectronic devices with enhanced efficiencies. In some embodiments, a nanoparticle composition comprises a layer of organic-inorganic perovskite nanocrystals, the organic-inorganic perovskite nanocrystals comprising surfaces associated with growth passivation ligands and trap passivation ligands, wherein the growth passivation ligands are larger than the trap passivation ligands and are of size unable to incorporate into octahedral corner sites of the perovskite crystal structure.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.