20% efficiency is less than half of the best research efficiency for other types of solar cells, but if you look at the Wikipedia chart for efficiency development (https://en.wikipedia.org/wiki/Solar_cell_efficiency#/media/File:PVeff(rev150806).jpg) the recent steeply growing yellow line is perovskite. Promising at the very least.

20% efficiency is less than half of the best research efficiency for other types of solar cells, but if you look at the Wikipedia chart for efficiency development (https://en.wikipedia.org/wiki/Solar_cell_efficiency#/media/File:PVeff(rev150806).jpg) the recent steeply growing yellow line is perovskite. Promising at the very least.

Originally shared by Tina Casey
http://cleantechnica.com/2015/11/30/molecular-soccer-ball-perovskite-solar-cell-already-20-5-efficiency/

Comments

  1. Andreas Jellinghaus1 December 2015 at 15:19

    Hmm. Why would I look at performance numbers without price information? Or at energy harvesting options without knowing how much energy is required to build this solar panel?

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  2. Lars Clausen2 December 2015 at 00:54

    True that. However, perovskite solar cells are actually cheap to produce and requires less energy than silicone-based ones. They can be produced in a regular lab rather than at 1000C (https://en.wikipedia.org/wiki/Perovskite_solar_cell)

    They have some degradation issues yet, though.

    ReplyDelete
  3. Andreas Jellinghaus2 December 2015 at 09:22

    Yet I didn't understand why having two layers to reach more than 20% rather than having only one layer with 15-20% is such a big win.

    But I suppose the material cost of the panel are only one part compared to the total cost of the panel, shipping, installing, electrical work, thus these other parts create an incentive to spend more on the basic solar panel to offset the other costs.

    ReplyDelete

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