Curious about Quantum Dots.
Posted: Tue Oct 13, 2015 9:08 pm
Hello,
I have been researching quantum dots. I have come across a few questions that I have not been able to answer and I was hoping you could help with them.
Why are quantum dots so efficient? In theory, if quantum dots work by absorbing a photon and emitting it at a different wavelength, the efficiency should be limited the same way it is limited in solar cells.
Could quantum dots ever emit a photon with a smaller wavelength than the absorbed photon?
Do quantum dots always "glow" or could they act more as a filter, with light passing straight through rather than being diffused in all directions?
Why aren't quantum dot solar cells already on the market? (All I can find is that it's a new technology.)
Thank you very much!
I have been researching quantum dots. I have come across a few questions that I have not been able to answer and I was hoping you could help with them.
Why are quantum dots so efficient? In theory, if quantum dots work by absorbing a photon and emitting it at a different wavelength, the efficiency should be limited the same way it is limited in solar cells.
Could quantum dots ever emit a photon with a smaller wavelength than the absorbed photon?
Do quantum dots always "glow" or could they act more as a filter, with light passing straight through rather than being diffused in all directions?
Why aren't quantum dot solar cells already on the market? (All I can find is that it's a new technology.)
Thank you very much!