Just wondering out loud, solar cells? Yes SOLAR CELLS !!! Like phones that do not need to have a battery replacement. Talk about longest lasting video player. Think how it might revolutionize cell phones.

Also this part: "light sensing and emitting semiconductor (solid-state) devices". I have seen articles that touch on this subject. Not sure about the details. Doni?

Thanks for your DD. I think it suggests what might be coming. Now we just have to dig or imagine until we hear from FF.