SBIR Phase I:Cadmium-free nanocrystals based light emitting diodes for full color flat panel displays

Period of Performance: 01/01/2010 - 12/31/2010

$168K

Phase 1 SBIR

Recipient Firm

Mesolight, LLC
MESOLIGHT, LLC, 4301 W Markham St #831
Little Rock, AR 72205
Principal Investigator

Abstract

This Small Business Innovation Research Phase I project will develop cadmium (Cd)-free semiconductor nanocrystal (quantum dot)-polymer nanocomposite light emitting diodes (LEDs) that are compact and lightweight and have superior imaging performance and long lifetimes. Polymeric LEDs (PLEDs) provide these advantages, and also feature the advantage of cost-effective solution processability; as a result, PLEDs are expected to replace liquid crystal displays (LCDs) and cathode ray tubes (CRTs) in many existing applications. In addition, these devices have the potential to enable new product forms and applications. However, current PLED technology has some disadvantages, including limited emitting colors, broad and red-tailed emission peaks, low efficiency, and short lifetimes. The proposed Cd-free QD based PLEDs promise to increase the number of colors (by 54% over the NTSC standard color gamut), allowing high color diversity and accuracy for the viewer. This Phase I effort will focus on the development of ultraviolet/blue emitting PLEDs. The follow-on Phase II project will focus on developing full-color devices with the performance to meet the standards necessary for commercial display devices and lighting products.