What is it?5
- An LED is a semiconductor that emits light when the energized electrons combine with the semiconductor’s material. The color of the light is dependent on the energy states of the electrons.
- LED’s are a form of Solid-state lighting, which is a category to set lighting solutions apart from the traditional methods of burning a filament.
- Indium Gallium Nitride (InGaN): Blue, green, UV.
- Aluminum Gallium Indium Phosphide (AlGaInP): yellow, orange. High brightness.
- Aluminum Gallium Arsenide (AlGaAs): Red and IR.
- Gallium Phosphide (GaP): yellow and green.
- Invented in 1962 by Nick Holonyak Jr, an engineer from IL who was working for General Electric at the time.1
- LED’s were only red for 10 years after being invented.1
- Primarily only used in extremely high tech labs due to their cost ($200/unit).
- Household lighting, car headlights, indicators, televisions, camera flashes, disc readers such as Blu-ray, infrared and UV lighting.
- Already being used for inexpensive lighting.
- Newly developed self-assembling nanoparticles called Perovskites.3
- Princeton researchers.
- Cheaper, brighter, more efficient.
- Lighting underdeveloped regions with efficiency.
- How about a sunroof that functions as solar powered led lighting?4
- LED contact lenses for Augmented reality?4
- Aalto University in Finland
- Replacing ceiling panels with led panels that create a calm, natural light?4
- Fraunhofer Institute for Industrial Engineering
What does this mean?
- Nano tech will be getting brighter.
- Wearables are more wearable.
- A better world with more developed countries.
- Better health, physically and mentally, with more control over lighting.