RE: Short update./ Website news.5 Sep 2019 00:45
Thanks for the news on solar, Gotrader. 2 years ago they claimed - talking of their own product I believe - "Solar panels are largely made from silicon, which is inherently inefficient in converting sunlight into electricity, typically achieving efficiencies of only 15-20%. In contrast, compound semiconductors are significantly more efficient, and today deliver efficiencies of over 44%. Furthermore, there is a technology roadmap to increase this efficiency to over 50%." Due to it's expense the main target market seemed to be space, where the light is very intense and due to the cost of getting stuff up there the cost of the cells themselves are hardly an issue.
But recently it seemed to have dropped off the map.
Now this. Insolight "has patented [an] optical system [that] concentrates light onto an array of tiny space-grade multi-junction photovoltaic cells. The panel’s protective glass embeds a grid of lenses which concentrate light by several hundred times. Under this optical layer, direct sunlight is focused on an array of high-performance space-grade solar cells." And IQE is part of it.
https://renewablesnow.com/news/solar-panels-of-swiss-insolight-achieve-efficiency-of-29-644004/
https://renewablesnow.com/news/swiss-solar-start-up-announces-364-panel-efficiency-539314/ - from 2 years ago, I think.
It looks like they are using very specialised lenses to focus light on very small bits of very high efficiency PV cells, probably produced by IQE. The differences in efficiency quoted between the present panel, 29% [ie over 10% more than normal panels], and the original 2 years ago, 36.4%, may be because an over-engineered lab prototype may be too expensive to mass produce (otherwise the discrepancies are worrying - but EU funding is some reassurance of integrity: somebody had to justify spending that money), so they've gone for a simpler but less efficient model.
Finally, "Over the last two years, our team has brought the product from a lab prototype to a full-size solar panel, connected to the grid and monitored 24/7. Our system has been extensively tested and we are now preparing an industrialization strategy for large-scale production", says Mathieu Ackermann, CTO of Insolight.
As per Gotrader they have "been awarded €10.6 million in funding by the European Union. This grant will aid in establishing a pilot assembly line"
Lots of people are working in this area, but this is now going into trial production, and has EU support behind it, both money and '16-member consortium of research organizations and leading industry partners'. That sounds like ongoing development resources.
It's a gigantic market....... Could save the world....... Jam tomorrow [week!]...... :)))