Emitting light to a Quantum dot

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Thread starter bluejay27
Start date Feb 24, 2017
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In summary, a quantum dot is a nanoscale semiconductor crystal that can emit or absorb light at specific wavelengths. Emitting light to a quantum dot works by exciting the electrons in the quantum dot with a light source, causing them to jump to a higher energy level and release energy in the form of light. This technology has many potential applications, including in LED displays, solar cells, medical imaging, and quantum information processing. The emission of light from a quantum dot is different from traditional light sources in that it is highly tunable and can emit light at specific wavelengths. However, there are challenges in achieving high efficiency and brightness, controlling the size and shape of the quantum dot, and integrating them into existing technologies while ensuring stability and reliability.

Feb 24, 2017

bluejay27

When visible light is being emanated to a quantum dot, why is it that you can see specific colors? I am not talking about the fluorescence that would occur when UV light is emanated.

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Feb 25, 2017

Ygggdrasil

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Are you asking the same question as in this thread? https://www.physicsforums.com/threads/quantum-dots-fluorescence.904964/

1. What is a quantum dot?

A quantum dot is a nanoscale semiconductor crystal that can emit or absorb light at specific wavelengths. It is typically made up of materials such as cadmium selenide or indium arsenide.

2. How does emitting light to a quantum dot work?

Emitting light to a quantum dot works by exciting the electrons in the quantum dot with a light source, causing them to jump to a higher energy level. When the electrons drop back down to their original energy level, they release energy in the form of light.

3. What are the potential applications of emitting light to a quantum dot?

Emitting light to a quantum dot has many potential applications, including in LED displays, solar cells, medical imaging, and quantum information processing.

4. How is the emission of light from a quantum dot different from traditional light sources?

The emission of light from a quantum dot is different from traditional light sources because it is highly tunable and can emit light at specific wavelengths. This allows for more precise and efficient use of light in various applications.

5. Are there any challenges in emitting light to a quantum dot?

Yes, there are some challenges in emitting light to a quantum dot. One challenge is achieving high efficiency and brightness, as well as controlling the size and shape of the quantum dot. Another challenge is integrating quantum dots into existing technologies and ensuring their stability and reliability over time.