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Introduction
So before we get into Blue LED, what would win the tech giant race: innovation, business tactics, or alliances?
let's take a step back and understand why regular light bulbs are so inefficient.
Nakamura's journey was far from over
The question now was what material to study
The next challenge? Making gallium nitride emit light efficiently
Nakamura made another adjustment and finally had the right recipe
Outro
Historical: LED Efficiency
Energy Savings Impact
Choice of Material
Blue LED is composed of three layers
First MOCVD GaN Buffer Layer
InGaN growth in 1991
Third Step: Create Active Layer (InGaN) GaN: Produces UV light InGaN: Produces blue light
1st Violet InGaN MQW Laser Diode
Comparison of LED 1.0 vs 2.0
100 Laser TV at 2014 Las Vegas CES