LEDs in Reverse Bias

Other Hardware LEDs and Multiplexing
1

I've read various articles on it, such as this one

Now what I am wondering, how does the lumen output of an LED effect it's usage in reverse bias?

Will an LED with a higher lumen output - such as 90 lumens, one that may require 1 watt of power, will that require more light/photons to produce a detectable signal (ie: less sensitive) than for example, a 100mw LED? Or is it the other way around?

What about the detection range for intensity?

Will one of the LEDs (all other things equal) detect a longer range? IE: The difference between the maximum amount of light that can be detected as a signal before the signal will not increase further with increasing light, and the minimum detectable amount? In principle, will one LED have a longer range and one shorter?

2

Don't know - try some & see! Be sure to report results back.

3

I was afraid that's going to be the answer. I don't want to buy some and wait forever for them to turn up, impatience and all that.

I do have some basic LEDs, there's a white one somewhere, and I did have 1W white LEDs somewhere, though I haven't seem them in a while.

4

Athiril:
Now what I am wondering, how does the lumen output of an LED effect it's usage in reverse bias?

NO, any semiconductor is light-sensitive.
The reverse bias is used to obtain a better conversion efficiency and better bandwidth

Will an LED with a higher lumen output - such as 90 lumens, one that may require 1 watt of power, will that require more light/photons to produce a detectable signal (ie: less sensitive) than for example, a 100mw LED? Or is it the other way around?

For a diode in receiving mode we can say that one photon gives one electron.
But obviously the light is attenuated between the outside and the heart of the diode, so there is a yield notion.

What about the detection range for intensity?

Even LEDs are ligh-sensitive they are not optimized for this purpose. Receiving diodes exist mainly in IR domain. These IR receiving diodes are characterized for this use. LEDs are optimized to emit we do not know their characteristic in reception mode.

Will one of the LEDs (all other things equal) detect a longer range? IE: The difference between the maximum amount of light that can be detected as a signal before the signal will not increase further with increasing light, and the minimum detectable amount? In principle, will one LED have a longer range and one shorter?

I can not answer. The response depends of the diode constitution and of optical characteristics of the LED housing.

5

Be very careful with an reverse bias experiments, common 20 mA leds tend to have a maximum +5vdc reverse bias voltage before breaking down and unless current limited can be destroyed.