Why It Was Almost Impossible to Make the Blue LED

Who created the first visible LED?

• Hiroshi Amano

• Shūji Nakamura

• Nick Holonyak

• Isamu Akasaki

What color did the first visible LED glow?

• Green

• Yellow

• Red

• Blue

Which company did Shūji Nakamura work for when he created the blue LED?

• Nichia

• Sony

• Monsanto

• General Electric

What was the main challenge in creating a blue LED?

• Designing a new type of diode

• Making a high-quality crystal

• Finding a suitable plastic cover

• Creating a large enough battery

What technology did Nakamura master in Florida that was crucial for his success?

• Metal Organic Chemical Vapor Deposition (MOCVD)

• Silicon Doping

• Electron Beam Lithography

• Quantum Dot Layering

What was the main material used in the creation of the blue LED?

• Phosphorus

• Silicon Carbide

• Gallium Nitride

• Zinc Selenide

What did Nakamura use to improve the efficiency of LEDs?

• A different color cover

• A larger battery

• A well and a hill structure

• A brighter filament

What year did Nakamura, Akasaki, and Amano receive the Nobel Prize in Physics?

• 1989

• 1994

• 2014

• 2001

What was the light output power of Nakamura's blue LED?

• 42 microwatts

• 1000 microwatts

• 200 microwatts

• 1500 microwatts

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What future technology is Nakamura interested in developing?

• Micro LEDs

• Nuclear Fusion

• Quantum Computing

• Artificial Intelligence

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