Update interview
22 May 2020

Lightricity
Lightricity is a niche photovoltaic start up, spun off from SHARP Laboratories of Europe in the UK. They focus on indoors where their technology has an exceptional 30% efficiency there, particularly under white LED and Fluorescent lighting.
Youtube interview
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.
Included are: