LEDgardener

This was a story suggested to me by Google because of my research into LEDs. The story claims that these Quantum Dot LEDs have achieved "record breaking efficiency" of 105 L/w. Am I missing something? Don't the LM301b's go over 200 L/w?

https://phys.org/news/2018-07-quantum-d ... ciency.amp

That is weired. There is a contact number at the end of the article for further questions...

Heathen wrote: ↑

Fri Jul 13, 2018 8:08 am

This was a story suggested to me by Google because of my research into LEDs. The story claims that these Quantum Dot LEDs have achieved "record breaking efficiency" of 105 L/w. Am I missing something? Don't the LM301b's go over 200 L/w?

https://phys.org/news/2018-07-quantum-d ... ciency.amp

after skimming thru it... the quantum dot is different.. it's not a blue based diode with a yellow phosphor coating. like our lm561c and lm301b... the actual diode produces r.b.g. with out the coating.

that's a good step forward

Jolly Green Giant wrote: ↑

Fri Jul 13, 2018 1:30 pm

Heathen wrote: ↑

Fri Jul 13, 2018 8:08 am

This was a story suggested to me by Google because of my research into LEDs. The story claims that these Quantum Dot LEDs have achieved "record breaking efficiency" of 105 L/w. Am I missing something? Don't the LM301b's go over 200 L/w?

https://phys.org/news/2018-07-quantum-d ... ciency.amp

after skimming thru it... the quantum dot is different.. it's not a blue based diode with a yellow phosphor coating. like our lm561c and lm301b... the actual diode produces r.b.g. with out the coating.

that's a good step forward

I saw that and that was my first thought but this is all still so new to me that I can't pretend to understand the distinction. I guess these wouldn't really be a breakthrough that affects what we are doing so much as it can possibly apply to display lighting like TV's and cell phones.

My LED TV from Samsung uses Quantum Dots.
When looking at some of the prices for these lights, I seriously contemplated putting a PAR meter under those dots to see if an HDR sunrise on loops wouldn't save me money.

Professor Xavier wrote: ↑

Fri Jul 13, 2018 9:46 pm

My LED TV from uses Quantum Dots.
When looking at some of the prices for these lights, I seriously contemplated putting a PAR meter under those dots to see if an HDR sunrise on loops wouldn't save me money.

I suggested this to Lumi on riddlem3.com some years ago, using a flat panel led as a grow light and using a program to turn the LCD into a tunable filter. I wasn't suggesting it was a great alternative to the cmh that they all were using but I thought it would be an interesting academic exercise. They thought it was quite comical.