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Emitting film with improved light-out coupling

  • US 10,670,229 B2
  • Filed: 06/25/2015
  • Issued: 06/02/2020
  • Est. Priority Date: 06/26/2014
  • Status: Expired due to Fees
First Claim
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1. An optically active structure, comprising a light emitting layer defined by a common matrix, wherein the common matrix has embedded therein a plurality of optically active semiconductor nanoparticles configured to emit light of one or more predetermined wavelength range in response to pumping energy, and a plurality of light scattering elements;

  • wherein each of said plurality of light scattering elements is formed by an optically transparent void region surrounding a filler particle, said filler particles also embedding some of the optically active semiconductor nanoparticles therewithin;

    such that each of the light scattering elements scatters light originated by emission of the optically active semiconductor nanoparticles surrounded by the respective void regions.

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