AIST Makes Tree With Solar-cell Leaves

Solar trees with small or thin film
Flexible & rigid
Sheets give small impression of many examples which can be found on-line
Holst Centre
Bamboo tree with printed OPV leaves made by Holst Centre using inkjet printing
Made by Howest (Hogeschool West-Vlaanderen) students Industrial design
Holst Centre Artist impression
AIST Makes Tree With Solar-cell Leaves
Design Solar Tree Charger
€ 77,56
excl. btw
“I designed and built my own test model,
copying the Fibonacci pattern of an oak tree. I
studied my results with the compass tool and
figured out the branch angles. The pattern was
about 137 degrees and the Fibonacci sequence
was 2/5. Then I built a model using this pattern
from PVC tubing. In place of leaves, I used PV
solar panels hooked up in series that produced
up to 1/2 volt, so the peak output of the model
was 5 volts. The entire design copied the
pattern of an oak tree as closely as possible. …
The Fibonacci tree design performed better
than the flat-panel model. The tree design
made 20% more electricity and collected 2 1/2
more hours of sunlight during the day. But the
most interesting results were in December,
when the Sun was at its lowest point in the sky.
The tree design made 50% more electricity, and
the collection time of sunlight was up to 50%
Leaf-shaped solar panels could coat buildings like ivy
Large solar trees using c-Si cells
Many different examples

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