LED and Solar Lights

June 4, 2009

Inspired By Photosynthesis: Dye Solar Cell (DSC) Solar Panels

Photo: Forest & Kim Starr

Photo: Forest & Kim Starr

The application of Dye Solar Cells (DSC’s) in many technologies and new
products is at least a year away, according to Dyesol, the leading company in
the fast-growing DSC sector. DSC technology still has a way to go to
catch up with nature. You see, DSC technology is based on the process
whereby plants convert light into energy and store it. Plants that use photosynthesis
operate 24/7, even when the sun is not shining.

Essentially, it’s working those long hours that will prove DSC energy more efficient than silicon-based
solar cells. The bio-inspired DSC is more powerful in a wider range of light and
temperature conditions and its material flexibility makes it easy to be
incorporated into many commonly used materials from steel in the building
industry to fabric in the textile industry. DSC will also be far less
expensive than silicon-based solar cells and will not leave the carbon
footprint that current solar plants are making. In short, the application of DSC technology to existing and new materials is going to be revolutionary, changing the way we interact with many of our environments.

Photo: Dyesol

Photo: Dyesol

Dyesol, an Australian company, with an international board of directors
and customer base, is creating the DSC’s which will generate heat when
incorporated into glass, steel, paint, nano fabrics and many other
textures. DSC’s are extremely flexible. Layers of dye are formed
and then laid on layers of material from steel to fabric. The dyes can be
colored or transparent.

Dyesol is now working with the Welsh Assembly Government
on a project designed to see if roofing steel can generate electricity.
Additionally, the University of Rome,
the Italian companies ERG Renew and Permasteelisa, and the Australian
Department of Defense have contracts with Dyesol for various applications of
DSC technology.

DSC’s, inspired by photosynthesis, will soon be coming to a roof or window
or winter shirt near you. Probably not soon enough.

June 3, 2009

The “Holy Grail” Of Light Bulbs: One Bulb Will Last For 60 Years!

Photo: Daily Mail, ©Matthew Power Masons

Photo: Daily Mail, ©Matthew Power Masons

Within two years, we could all be paying 75 percent less for home lighting than we are now, with $3 light bulbs that last 60 years and could reduce emission of carbon dioxide by 5 million tons a year!

Researchers at Cambridge Univerisity say their new LED bulbs do not
contain mercury and they do not flicker. (Flickering can lead to
migraine aura and epileptic seizures.) And they’re bright!

The researchers first developed their energy-saving bulb using gallium nitride, a man-made semiconductor used to make LED’s, such as those used in bicycle lights, cell phones, and camera flashes. But to make a household light bulb using the same methods would have resulted in a $30 light bulb, because the gallium nitride was being made on a more expensive material, sapphire wafers.

But yesterday, London’s Daily Mail reported that the University-based Centre for Gallium Nitride scientists found a less expensive method of growing the semiconductor — silicon wafers. So, it seems like it’s heads up for manufacturing the new 100,000 hour bulbs, as they are already on the drawing board at RFMD, a company not far from Cambridge.

Professor Colin Humpreys, who is pictured above with the new LED bulbs, said, “This could well be the holy grail in terms of providing our lighting needs for the future.”

June 2, 2009

Room Light Saves Energy by Adjusting its Own Brightness

Saving power is the green way to go these days and Panasonic is making energy conservation ever more effortless.

Saving power is the green way to go these days and Panasonic is making energy conservation ever more effortless.


“Auto-eco Light-control Twin Pa” is a real mouthful but once ordered and installed, you may never need to refer to it again. That’s because this environmentally friendly ceiling lamp automatically adjusts its brightness level to light rooms evenly, no matter what time of day or night it is, regardless of outside weather conditions.

Supposedly in Japan, people often leave lights on during the day so by using this new light, average power consumption can be reduced by up to 60 percent.

Green diode indicates the light sensor is working

Green diode indicates the light sensor is working

The lamp employs a luminance sensor that measures the brightness of an area directly below, much like an old-fashioned light meter used in better cameras. It then adjusts the lamp’s brightness from 10 to 100 percent to match a pre-set level. Adjustments are made in over 65 increments so any adjustments are barely noticeable.

Light up my life... at a regularly adjusted, optimum level.

Light up my life… at a regularly adjusted, optimum level.

The Auto-eco Light-control Twin Pa (memo to Panasonic: come up with a shorter name) is scheduled to be released for retail sale in Japan on March 9, 2009, and will come in 89-watt and 74-watt models priced at ¥35,000 (approx US$390) and ¥32,000 (approx US$355) respectively.

Pricey yes, but Panasonic sees a bright future for the lamp with an estimated 200,000 sales in the first year. (via Tech-On!)

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