Lighting

Access our comprehensive library of technical briefs on lighting, from engineering experts at NASA and major government, university, and commercial laboratories.

Briefs : Lighting
Transparent Conducting Oxides and Undercoat Technologies for Economical OLED Lighting

Economics is a key factor for application of organic light-emitting diodes (OLEDs) in general lighting relative to OLED flat panel displays that can handle high-cost materials such as indium tin oxide (ITO) or indium zinc oxide (IZO) as the transparent...

Briefs : Lighting
Hydrogen Fuel Cell-Powered Mobile Lighting System

A new mobile lighting system features a fuel cell running on pure hydrogen, resulting in zero-emission electrical power. The fuel cell produces electricity for an advanced, power-saving light-emitting plasma (LEP) lighting system and additional auxiliary power up to 2.5 kW, which allows extra...

Briefs : Lighting
High-Performance LED Comprised of Organic and Quantum Dot-Based Layers

New research paves the way to manufacturing efficient, stable, and low-cost quantum dot-based light-emitting diodes (LEDs), which is important for the widespread commercial use of these LEDs in large-area, full-color flat-panel displays or as solid-state lighting sources to...

Briefs : Lighting
GaN-Ready Aluminum Nitride Substrates

The objective of this project was to develop and then demonstrate the efficacy of a cost-effective approach for a low-defect-density substrate on which aluminum indium gallium nitride (AlInGaN) light-emitting diodes (LEDs) can be fabricated. The efficacy of this GaN-ready substrate would then be tested by...

Briefs : Energy
LED Display Engineering

The primary objective of this project was to develop and implement a method that compensates for the inefficiency of the green light-emitting diode (LED). The proposed engineering solution was to use RGBW combination in every pixel to save energy. A 32" x 16" display with pixel spacing of one inch, which is usually used...

Briefs : Energy
Self-Activating and Doped Tantalate Phosphors
Phosphors are useful in numerous applications including lighting. Tantalates are very promising materials because they are especially robust and resistant to chemical degradation. Studies have shown that rare-earth tantalates are excellent host lattices for europium (Eu)-doped red-emitting phosphors,...
Briefs : Lighting
Self-Activating and Doped Tantalate Phosphors

Phosphors are useful in numerous applications including imaging, detection, and lighting. They come in forms of thin films, monoliths, or powders for miscellaneous devices, or dispersible nano particles for applications such as biomedical imaging. Oxide phosphors, as apposed to chalcogenides or...

Briefs : Lighting
LED Display Engineering

The primary objective of this project was to develop and implement a method that compensates for the inefficiency of the green light-emitting diode (LED). The proposed engineering solution was to use RGBW combination in every pixel to save energy. A 32" x 16" display with pixel spacing of one inch, which is usually used...

Briefs : Lighting
GaN-Ready Aluminum Nitride Substrates
Crystal IS, Inc., Green Island, NY

The objective of this project was to develop and then demonstrate the efficacy of a cost-effective approach for a low-defect-density substrate on which aluminum indium gallium nitride (AlInGaN) light-emitting diodes (LEDs) can be fabricated. The efficacy of this...

Briefs : Lighting
Photoluminescent Nanofibers for High-Efficiency Solid-State Lighting

Polymer nanofibers are nanoscale materials whose properties can be adjusted to provide desirable light management performance for high efficiency solid-state lighting luminaires. The polymeric nanofibers at the core of this project have diameters on the order of 100 to 1000nm...

Briefs : Lighting
Photoluminescent Nanofibers for High-Efficiency Solid-State Lighting

Polymer nanofibers are nanoscale materials whose properties can be adjusted to provide desirable light management performance for high-efficiency solid-state lighting (SSL) luminaires. The polymeric nanofibers at the core of this project have diameters on the order of 100 to...

Briefs : Lighting
White Scattered Photon Extraction LEDs with Multi-Phosphor Layers

Early phosphor-converted white light-emitting diodes (LEDs) produced light with poor color characteristics in terms of color rendering index (CRI) and correlated color temperature (CCT). More recent LEDs have improved their color properties by combining multiple phosphors instead...

Briefs : Energy
Nanoengineering for Solid-State Lighting

This report summarizes results from a three-year Laboratory Directed Research and Development (LDRD) project. The collaborative effort of researchers from Sandia National Laboratories and Rensselaer Polytechnic Institute was supported by Sandia’s National Institute for Nano-Engineering and focused on...

Briefs : Lighting
Nanoengineering for Solid-State Lighting
Sandia National Laboratories, Albuquerque, NM
Rensselaer Polytechnic Institute, Troy, NY

This report summarizes results from a three-year Laboratory Directed Research and Development (LDRD) project. The collaborative effort of researchers from Sandia National Laboratories and Rensselaer...

Briefs : Energy
LED Lighting for Maintenance and Construction Vehicles

Strobe or rotating beacon-type emergency lighting is a requirement on all Minnesota Department of Transportation (Mn/DOT) maintenance and construction vehicles. There is an effort to replace the standard warning lighting with LED-based lights in order to reduce cost of replacement and...

Briefs : Lighting
LED Lighting for Maintenance and Construction Vehicles

Strobe or rotating beacon-type emergency lighting is a requirement on all Minnesota Department of Transportation (Mn/DOT) maintenance and construction vehicles. There is an effort to replace the standard warning lighting with light-emitting diode (LED)-based lights in order to reduce cost of...

Briefs : Lighting
Demonstration Assessment of LED Freezer Case Lighting
Demonstration Assessment of LED Freezer Case Lighting

This report describes the process and results of a demonstration of solid-state lighting (SSL) technology combined with occupancy sensors in a set of upright grocery store freezer cases....

Demonstration Assessment of LED Freezer Case Lighting
Briefs : Energy
Diffuse-Illumination Systems for Growing Plants

A proposed plant-growth system takes advantage of the highly diffuse reflective surfaces on the interior of a sphere, hemisphere, or other nearly enclosed structure that is coated with highly reflective materials. This type of surface and structure uniformly mixes discrete light sources to produce...

Briefs : Energy
Development of Advanced LED Phosphors by Spray-based Processes for Solid-State Lighting

Luminescent materials were developed using aerosol processes, for making improved LED devices for solid-state lighting. In essence this means improving white light emitting phosphor-based LEDs by improvement of the phosphor and phosphor layer.

Briefs : Energy
Sliding Mode Pulsed Current Averaging IC Drivers for High-Brightness Light Emitting Diodes

Light Emitting Diode (LED) driver ICs associated with specific (uniquely operated) switching power supplies that optimize performance for High Brightness LEDs (HB-LEDs) have been developed. The LED drivers feature fewer external components and high power...

Briefs : Lighting
Sliding Mode Pulsed Current Averaging IC Drivers for High-Brightness Light Emitting Diodes
SynDiTec Inc.,
San Jose, CA

This project developed new light emitting diode (LED) driver ICs associated with specific (uniquely operated) switching power supplies that optimize performance for High Brightness LEDs (HBLEDs). The drivers...

Briefs : Lighting
Development of Advanced LED Phosphors by Spray-based Processes for Solid-State Lighting
Cabot Corp.,
Boston, MA

The overarching goal of this project was to develop luminescent materials using aerosol processes for making improved LED devices for solid-state lighting. In essence, this means improving white light emitting...

Briefs : Lighting
OLED Deposition Technology

Low-cost processing methods will be required if the small organic molecule materials currently under development for use in organic light emitting diodes (OLEDs) and other electronics are ever to realize wide spread commercial application.

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