22 May 2020
Lightricity is a niche photovoltaic player with 9 people, spun off from Oxford University in the UK. They focus on indoors because their technology has an exceptional 30% efficiency there, particularly under LED (blueish?) lighting.
17 Oct 2018
Ambient light energy harvesting watch from Lightricity
Lightricity discuss their ambient light energy harvester, the highest in the world. In this case employed in a watch, however, other customers are applying it to different applications.