Green Options

Researchers at Rice University have announced the discovery of a new breakthrough method for producing carbon nanotubes in bulk fluids.  Rice’s new nanotube “stew” could spur the inexpensive mass production of carbon nanotube-based products, much like the plastics industry employed bulk loads of melted polymers as a cheap base for making everything from medical equipment to polyester shirts to plastic bags, and countless other things in between.

Rice’s nanotube research was sponsored in party by U.S. Air Force and U.S. Navy.  Aside from their military application, carbon nanotubes have a practically unlimited potential for sustainable civilian products because of their strength, light weight, and electrical conductivity among other properties. Lightweight nanomaterials could boost the gas mileage in cars and airplanes, make thinner and more flexible solar cells, increase the efficiency of lithium-ion batteries (in combination with another new high tech material, graphene), and be used in artificial photosynthesis to generate hydrogen fuel.

Researchers at the Georgia Institute of Technology have made a three-dimensional photovoltaic solar cell around an optical fibre, a revolutionary new approach that could pave the way for a new generation of hyper-flexible solar systems.

According to team-leader Professor Zhong Lin Wang, “Using this technology, we can make photovoltaic generators that are foldable, concealed and mobile. Optical fibre could conduct sunlight into a building’s walls where the nanostructures would convert it to electricity. This is truly a three dimensional solar cell.”

Computer technology is always about being one step ahead of competitors. Information technology moves faster than light it seems, and by the time your new computer arrives at your doorstep, it is already out of date. Dell, whose computers can be found in most offices, homes, and campuses across the country, has been doing its best to stay ahead of the curve.

Proving it is both environmentally friendly and hip to the trends of popular culture, Dell has just finished installing a grove of solar trees at its Corporate headquarters in Round Rock, Texas.

New research at the University of Florida (UF) has just brought to light a new method in the capturing and guiding of energy that may lead to cheaper and more efficient solar cells.

One of the biggest problems with solar cells currently on the market is that they are extremely easy to break. Companies intent on manufacturing any sort of solar powered products have to find solutions, and few have yet been perfect. Hoping to change this trend, Dupont recently announced the launch of two new lines of encapsulants specifically designed to contend with the trials inherent in manufacturing photovoltaic products.

Any one out there care to try this? The UK’s Register Hardware this week features a video in which Blake Farrow, a US “boffin” (for “eggead”), as they describe him, shows how to make a working solar cell using such odd ingredients as powdered donuts, Starbucks tea, a pencil, cellophane tape and Everclear. It might sound crazy at first, but the science [...]

Chemical maker DuPont (NYSE:DD) said this week it expects to triple its photovoltaic sales to $1 billion annually by 2012.

The increase will come as the market for solar power increases and the company boosts its own ability to produce solar cells, company officials said during the Jefferies 7th Global Clean Technology Conference.

The manufacturing costs of solar power — or at least for thin-film photovoltaic panels — have broken below a golden benchmark, as reported by Popular Mechanics: $1 per watt.

First Solar, based in Tempe, Ariz., has brought the costs down to $0.98 per watt. The company says that further cost reductions will be achieved as technological and manufacturing process potentials are reached.

But things are not all rosy since

[...]

Australian scientists at CSIRO’s Victorian Organic Solar Cell Consortium (VICOSC) are on a quest to make solar cells as easy to print as money. Trials of the flexible, large area, cost-effective, reel-to-reel printable plastic solar cells will even be conducted by Securency International — a banknote printing company.

Australia’s federal government, led by Prime Minister Kevin Rudd, has approved plans for a $60 million dollar factory which is to become the largest manufacturer of solar cells in the Southern Hemisphere.

The company responsible for the project, Solar Spark Australia, is the first to be awarded Major Project Facillitation status under the Rudd government, and it plans to begin powering 9,000 homes by late next year.

This marks increased hope that Australia can meet goals to reduce greenhouse gas emissions 60% by 2050.

The recent discovery that butterfly wings have tiny scales that act as solar collectors has led scientists in Japan and China to design a more efficient solar cell that could be used for power in the future.

Using natural butterfly wings as a template, the scientists were able to make copies of the solar collecting scales and transfer those to dye-sensitive solar cells.