Hi, I'm Bill. I'm a software developer with a passion for making and electronics. I do a lot of things and here is where I document my learning in order to be able to inspire other people to make ...

When light strikes the photodiode’s active region, current flows from cathode to anode. Ideally, this entire photocurrent ...

The increased requirement for visible light/infrared dual band imaging systems with compact structure, suitable field of view (FOV), high resolution coverage and without significantly complicates the ...

Researchers at the University of Illinois have pulled off a laser first: they built a new kind of eye-safe laser that works ...

In this work, we present an elaborate analysis of the performance of our short-wave infrared (SWIR) sensitive PbS CQD imagers, which achieve external quantum efficiency (EQE) up to 40% at the ...