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Red-Emitting Phosphors for Solid-State Lighting

Sandia National Laboratories

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Publications:

PDF Document PublicationMarket Sheet (851 KB)

Technology Marketing Summary

Sandia has developed red-emitting phosphors that will help to transform the cold blue of many current light-emitting diodes (LEDs) into the warm white that is preferred for general lighting. This advance could help move solid-state lighting (SSL) into broader applications and market spaces. This class of rare-earth doped tantalates has unprecedented compositions and structures as well as excellent characteristics for a red-phosphor component for blue or UV excitation. Some compositions and phases are formed as nanoparticles, which are advantageous for minimal emission loss due to scattering. These phases and nanoparticle forms can only be obtained by this invention.

Description

The solid-state devices that have been targeted by this technology produce light in the blue to yellow portion of the visible spectrum, which means that orange or red objects appear dim and colorless under this lighting. In order to improve white light quality, devices need to be equipped with these red-emitting phosphors that can be excited by blue LEDs as developed by Sandia.

Benefits
  • Improved white light quality
  • Unprecedented red-phosphor component for blue or UV excitation
  • Reduces the need for stringent emission wavelength control of the LEDs
  • Increases the absorption cross section of the phosphor
  • Exceeds traditional LED color quality
  • Improved energy efficiency
Applications and Industries
  • Electronics
  • Solid-state lighting
  • Photocatalysis
  • Ion Conducting
Patents and Patent Applications
ID Number
Title and Abstract
Primary Lab
Date
Patent 8,287,832
Patent
8,287,832
Hydrothermal method of synthesis of rare-earth tantalates and niobates
A hydrothermal method of synthesis of a family of rare-earth Group 5 oxides, where the Group 5 oxide is a niobate or tantalate. The rare-earth Group 5 oxides can be doped with suitable emitter ions to form nanophosphors.
Sandia National Laboratories 10/16/2012
Issued
Patent 8,585,928
Patent
8,585,928
Rare-earth tantalates and niobates suitable for use as nanophosphors
A family of rare-earth Group 5 oxides, where the Group 5 oxide is a niobate or tantalate. The rare-earth Group 5 oxides can be doped with suitable emitter ions to form nanophosphors.
Sandia National Laboratories 11/19/2013
Issued
Technology Status
Technology IDDevelopment StageAvailabilityPublishedLast Updated
SD#11392Prototype - Sandia estimates this technology’s TRL at approximately level 3-4. Active research and development has been initiated and laboratory-based studies are being conducted for proof-of-concept validation.Available - Various license and partnering options are available. Please contact the Intellectual Property department to discuss. 09/09/201010/31/2016

Contact SNL About This Technology

To: Technology Inquiries<ip@sandia.gov>