if you go to the wiki site scroll down to the index and look for UV solar Cell. i think they got some info from what the Japanese are doing. possiblly using the uv solar cells on windows because its clear and not like the typical solar panels. they are for use in power generation, as well as regular lightening in houses causes its going to possible be used on regualr window. plus whatever else they were talking about glanced at it as i was speeding through.
sorry its the Japanese that are doing the research not the Chinese
here's the site of the people going for it