What technology did Hiroshi Amano develop for blue LEDs?
p-type gallium nitride doping
Silicon wafers
Graphene sheets
Quantum dots
Answer
Hiroshi Amano's development of p-type gallium nitride doping was a crucial breakthrough in the creation of blue LEDs. By introducing impurities into gallium nitride, Amano enabled the material to conduct electricity, allowing for the flow of current and the emission of blue light. This innovation paved the way for the development of high-efficiency blue LEDs, which are now widely used in various applications, including displays, lighting, and medical devices.
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