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Silicon plus perovskite solar reaches 34 percent efficiency
(arstechnica.com)
This is a most excellent place for technology news and articles.
You're right, there's no point in general public following these news. When a lab publishes such, it's meant for other researchers. The other researchers can try to build upon. It might become useful or as an inventor put it - discover a thousand ways of how not to do it.
When you see big numbers reported but see the deployed improvements in single digits, that's coz the big number improvement gets deployed many years later.