Photochemical Upconversion Light Emitting Diode (LED): Theory of Triplet Annihilation Enhanced by a Cavity

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Artificial lighting is a widespread technology which consumes large amounts of energy. Triplet–triplet annihilation photochemical upconversion is a method of converting light to a higher frequency. Here, it is shown theoretically that photochemical upconversion can be applied to Watt‐scale lighting, with performance closely approaching the 50% quantum yield upper limit. The dynamic equilibrium of an efficient device consisting of an LED, an upconverting material, and an optical cavity is described from optical and thermal perspectives.
Original languageEnglish
Article number1800099
Number of pages10
JournalAdvanced Theory and Simulations
Issue number1
Publication statusPublished - 2019


  • cavities
  • LEDs
  • light emitting diodes
  • lighting
  • photochemical upconversion

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