21 Oct '13 17:07>6 edits
http://phys.org/news/2013-10-cleaner-greener-cities-transparent-solar.html
They work by being mainly transparent to visible light but absorb UV and i.r. light to convert some of that energy into electricity. This is not exactly a new idea but hopefully this will now become economic and be soon used widely.
While on the subject of solar cells, here is another bit of good news:
http://phys.org/news/2013-10-scientists-breakthrough-solar-technology.html
"...In the near future, solar panels will not only be more efficient but also a lot cheaper and affordable for everyone, ...
...
....This next generation solar cell, made from organic-inorganic hybrid perovskite materials, is about five times cheaper than current thin-film solar cells, due to a simpler solution-based manufacturing process.
....
Perovskite is known to be a remarkable solar cell material as it can convert up to 15 per cent of sunlight to electricity, close to the efficiency of the current solar cells, but scientists did not know why or how, until now....
....
...Perovskite-based solar cells have the potential to reach 20 per cent solar cell efficiencies...
..."
-and perovskite is calcium titanium oxide with the chemical formula CaTiO3. Note that all three of those chemical elements it is made of are very common chemical elements in the earth's crust thus are all relatively cheap and readily available in large quantity.
They work by being mainly transparent to visible light but absorb UV and i.r. light to convert some of that energy into electricity. This is not exactly a new idea but hopefully this will now become economic and be soon used widely.
While on the subject of solar cells, here is another bit of good news:
http://phys.org/news/2013-10-scientists-breakthrough-solar-technology.html
"...In the near future, solar panels will not only be more efficient but also a lot cheaper and affordable for everyone, ...
...
....This next generation solar cell, made from organic-inorganic hybrid perovskite materials, is about five times cheaper than current thin-film solar cells, due to a simpler solution-based manufacturing process.
....
Perovskite is known to be a remarkable solar cell material as it can convert up to 15 per cent of sunlight to electricity, close to the efficiency of the current solar cells, but scientists did not know why or how, until now....
....
...Perovskite-based solar cells have the potential to reach 20 per cent solar cell efficiencies...
..."
-and perovskite is calcium titanium oxide with the chemical formula CaTiO3. Note that all three of those chemical elements it is made of are very common chemical elements in the earth's crust thus are all relatively cheap and readily available in large quantity.