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Keywords:

  • organic semiconductor;
  • refractive index;
  • optical design;
  • ellipsometry;
  • distributed Bragg reflector (DBR)
Thumbnail image of graphical abstract

Over the past quarter century of organic semiconductor research, refractive index control of organic semiconductor thin films has never been discussed. Daisuke Yokoyama and co-workers demonstrate on page 6368 a large refractive index difference of 0.58 in organic semiconductor films and fabricated organic photoconductive DBRs (distributed Bragg reflectors) with a reflectivity of >98%. These findings provide us with new additional freedom and strategies in advanced optical design of organic semiconductor devices.