The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.
Date has passed, but arstechnica.com does not confirm it happened then; unverified.
Gigazine, published 24 March 2017 within the pin's stored 22-24 March 2017 window, reports Kaneka's cell reached "a power efficiency of 26.6%" certified by NREL, corroborating the record-breaking efficiency claim in the pin's description.
TechXplore reports Kaneka Corporation "broken the record for silicon-based solar cell efficiency by producing a cell that was tested to be 26.3-percent efficient," published 21 March 2017, one day before the pin's stored 22 March 2017 date, closely matching the announcement.
Something missing or wrong? Say it in your own words: a link that backs this pin up, a different start or end date and why, or a fact it lacks or gets wrong. The AI checks it against this pin's sources, searches for better ones, and adds any page that backs you up. The pin's own sources still count most.
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