Novel high efficiency quadruple junction solar cell with current matching and quantum efficiency simulations · HackerPapers discussionshttps://hackerpaper.kaipfister.de/p/1905.08024/Collected HN comments and submissions linking this paper.enMon, 02 Nov 2026 11:16:22 GMTNovel high efficiency quadruple junction solar cell with current matching and quantum efficiency simulations — mentioned by anonymousiamhttps://news.ycombinator.com/item?id=32472076urn:hackerpapers:mention:1905.08024:32472076Mon, 15 Aug 2022 16:48:38 GMT<p>The article is very light on the technology. (Quad Junction) GaAs cells have been produced with &gt;40% conversion efficiency. That&#x27;s more than three times the efficiency of Si or anything else in common use. The GaAs cells have thus far only been used for space-based applications. Somebody should be working on getting production costs down and deploying these things terrestrially. https://arxiv.org/pdf/1905.08024.pdf https://boeing.mediaroom.com/2010-11-01-Boeings-Spectrolab-P... https://www.spectrolab.com/photovoltaics.html</p><p><a href="https://hackerpaper.kaipfister.de/p/1905.08024/">Paper and discussion history</a>. A mention is not an endorsement.</p>physics.app-ph