Grass Clippings to Solar Panels — Biophotovotaics

This post was originally published on Climate Progress and has been reposted with permission.

It’s chore day. You have raked the leaves, taken out the recycling, and emptied out the old junk in your garage. But wait — don’t toss it all out! You have all the ingredients for your really own homemade solar system.

If new advances in “biophotovoltaics” study are any indication, you could someday be ready to create your personal solar “goo” from plant matter and apply it to metal or glass.

A group of researchers has identified a way to break down plant matter, isolate photosynthetic molecules, and then spread people molecules on a metal or glass substrate. So theoretically, you could take a bag complete of leaves and grass, pour in a mixture of chemicals to break them down, and then finish your chores by painting the liquid on your windows to produce electrical energy. Not terrible for a day’s work.

Researchers have been functioning on biophotovoltaics for many a long time, only to be hindered by very low efficiencies, quick degradation, and issues in spreading the photovoltaic “goo” onto a substrate. But 9 researchers have just published analysis on new advances that enhance performance and may let for affordable substrates like recycled glass and metal to be used:

To boost photovoltaic efficiency we increased the light absorption cross-section without altering the footprint by departing from the classic flat electrode geometry in favor of mesoscopic, substantial-surface area semiconducting electrodes (TiO₂ nanocrystals and ZnO nanowires). Ultimately, we showed how higher affinity peptide motifs¹⁰ bioengineered to advertise selective adsorption to distinct substrates can boost photovoltaic efficiency. These components, geometries and style resulted in basic, robust biophotovoltaic devices of unprecedented functionality.

In short, the researchers have designed a technique to stabilize the photosynthetic molecules. And by coating a substrate with titanium dioxide and zinc oxide nanowires, they can now turn any sort of glass or metal material into a operating solar cell with efficiencies much better than ever prior to.

It’s a fascinating discovery. But really don't get too excited however. Efficiencies are nonetheless extraordinarily reduced — only at .01%. They’d need to have to be about ten occasions that in order to energy a light or charge a cell cellphone. So for the foreseeable long term, don’t assume to be painting your residence with a bag of grass clippings.

Nevertheless, as study advances and functionality continues to boost, MIT physicist Andreas Mershin says it could be excellent for remote applications in producing nations. In the video below, Mershin explains the significance of the findings:

Connected posts:

1. GreenSun Develops Colorful Solar Panels that don’t require Direct Sunlight


2. Grass Grows Greener on this Singapore Roof


3. Invasion of the Self Cleaning Solar Panels from Mars

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