Comments on: Stacked Solar Cells Can Now Operate At Solar Concentrations Of Up To 70,000 Suns Worth Of Energy Thanks To New Technique http://cleantechnica.com/2013/09/09/stacked-solar-cells-can-now-operate-at-solar-concentrations-of-up-to-70000-suns-worth-of-energy-thanks-to-new-technique/ Clean Tech News & Views: Solar Energy News. Wind Energy News. EV News. & More. Mon, 29 Dec 2014 04:36:00 +0000 hourly 1 http://wordpress.org/?v=4.0.1 By: JamesWimberley http://cleantechnica.com/2013/09/09/stacked-solar-cells-can-now-operate-at-solar-concentrations-of-up-to-70000-suns-worth-of-energy-thanks-to-new-technique/#comment-181588 Thu, 12 Sep 2013 02:25:00 +0000 http://cleantechnica.com/?p=56166#comment-181588 The photo looks like one of plain vanilla silicon solar panels, not the cutting-edge lab work being reported on, which may some day replace them – or maybe not.

]]> By: Troy Frank http://cleantechnica.com/2013/09/09/stacked-solar-cells-can-now-operate-at-solar-concentrations-of-up-to-70000-suns-worth-of-energy-thanks-to-new-technique/#comment-180830 Tue, 10 Sep 2013 13:00:00 +0000 http://cleantechnica.com/?p=56166#comment-180830 I get that the concentration efficiency goes down if the focal point isn’t right in line with the sun. But being off-target a bit doesn’t mean you get no concentration does it? Is it really an all or nothing, or do you just get reduced concentration when you’re off-target?

]]> By: eject http://cleantechnica.com/2013/09/09/stacked-solar-cells-can-now-operate-at-solar-concentrations-of-up-to-70000-suns-worth-of-energy-thanks-to-new-technique/#comment-180801 Tue, 10 Sep 2013 08:22:00 +0000 http://cleantechnica.com/?p=56166#comment-180801 Because you have to keep the focal point of your concentration device (i.e. lens or mirror) right on the solar cell.

]]> By: Troy Frank http://cleantechnica.com/2013/09/09/stacked-solar-cells-can-now-operate-at-solar-concentrations-of-up-to-70000-suns-worth-of-energy-thanks-to-new-technique/#comment-180763 Tue, 10 Sep 2013 00:48:00 +0000 http://cleantechnica.com/?p=56166#comment-180763 I don’t see why this would mean that you need a tracker. Even without the tracker wouldn’t you still get some amount of concentration?

]]> By: eject http://cleantechnica.com/2013/09/09/stacked-solar-cells-can-now-operate-at-solar-concentrations-of-up-to-70000-suns-worth-of-energy-thanks-to-new-technique/#comment-180751 Mon, 09 Sep 2013 21:13:00 +0000 http://cleantechnica.com/?p=56166#comment-180751 Dealing with the discrepancy between pronunciation and spelling requires attention at least for a non native.

]]> By: Stephen http://cleantechnica.com/2013/09/09/stacked-solar-cells-can-now-operate-at-solar-concentrations-of-up-to-70000-suns-worth-of-energy-thanks-to-new-technique/#comment-180734 Mon, 09 Sep 2013 19:53:00 +0000 http://cleantechnica.com/?p=56166#comment-180734 If your pants are loose, you’re going to lose them!

]]> By: eject http://cleantechnica.com/2013/09/09/stacked-solar-cells-can-now-operate-at-solar-concentrations-of-up-to-70000-suns-worth-of-energy-thanks-to-new-technique/#comment-180701 Mon, 09 Sep 2013 15:25:00 +0000 http://cleantechnica.com/?p=56166#comment-180701 A parabolic mirror does this easily. 1m2 would bring the power of 10 000 suns on a 1cm2 pv cell.

I personally think this is all rubbish anyway . way to complex. you need electrical motors and stuff to track the sun (hello, moving parts fail, they simply will). you loose a lot of space around those tracking devices. you need to put them somewhere far outside so the land is cheap enough. this means you need transmission lines. you are basically introducing many of the downsides of wind turbines to PV without getting the same yield as from a turbine. solar PV belongs on the roof. this way you loose no space. They will just sit there for 50 or more years. Nearly no maintenance

]]> By: dcard88 http://cleantechnica.com/2013/09/09/stacked-solar-cells-can-now-operate-at-solar-concentrations-of-up-to-70000-suns-worth-of-energy-thanks-to-new-technique/#comment-180689 Mon, 09 Sep 2013 13:54:00 +0000 http://cleantechnica.com/?p=56166#comment-180689 I don’t understand how you get from 1 solar energy to 4 or 5000 without some type of huge magnification. Maybe a 6 inch thick lens?

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