Luminescent concentrator design for displays with high ambient contrast and efficiency

Osman S. Cifci, Mikayla A. Yoder, Lu Xu, Hao Chen, Christopher J. Beck, Junwen He, Brent A. Koscher, Zachary Nett, Joseph K. Swabeck, A. Paul Alivisatos, Ralph G. Nuzzo, Paul V. Braun

Research output: Contribution to journalArticlepeer-review


A key display characteristic is its efficiency (emitted light power divided by input power). Although display efficiencies are being improved through emissive (for example, quantum dot and organic light-emitting) display designs, which remove the highly inefficient colour filters found in traditional liquid crystal displays, polarization filters, which block about 50% light, remain necessary to inhibit ambient light reflection. We introduce a luminescent concentrator design to replace both colour and polarization filters. Narrow-band, large-Stokes-shift, CdSe/CdS quantum dot emitters are embedded in a luminescent concentrator pixel element with a small top aperture. The remainder of the top surface is coated black, reducing ambient light reflection. A single pixel demonstrates an extraction efficiency of 40.9% from a pixel with an aperture opening of 11.0%. A simple proof-of-concept multipixel array is demonstrated.

Original languageEnglish (US)
Pages (from-to)872-877
Number of pages6
JournalNature Photonics
Issue number10
StatePublished - Oct 2023

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics


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