To last editor edit

"it is 40% and 30%" in external links is not a valid entry. If you have sources that indicate the information in this article is incorrect, please publish it appropriately. It is important to make this factually correct, and your insight would be appreciated.

Vulture19 (talk) 01:01, 11 February 2009 (UTC)Reply

Reference other developments for credibility edit

I think for credibility, it would help if this article should reference other key achievements in the development of solar cells, including Becquerel in 1839 and Smith in 1873. In isolation it sounds like a bogus claim.--Graham Proud (talk) 07:03, 10 March 2014 (UTC)Reply