Luminescent concentrator design for displays with high ambient contrast and efficiency
Nature Photonics, vol.17, no.10, pp.872-877, 2023 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 17 Issue: 10
- Publication Date: 2023
- Doi Number: 10.1038/s41566-023-01281-2
- Journal Name: Nature Photonics
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Biotechnology Research Abstracts, Chemical Abstracts Core, Communication Abstracts, Compendex, INSPEC
- Page Numbers: pp.872-877
- Yozgat Bozok University Affiliated: Yes
Abstract
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.