SolarFilm
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Heat-rejecting film could reduce air conditioning costs
Climate change can be a vicious cycle when folks crank up the air conditioning during heat waves and add even more CO2 to the atmosphere. Scientists from MIT and the University of Hong Kong have developed a new type of window coating that could curb that trend. It remains highly transparent up to 89 degrees F (32 degrees Celsius), but beyond that, it becomes translucent like frosted glass. As a result, it reflects back up to 70 percent of the sun's incoming heat, reducing interior temperatures and the load on your air conditioner.
Researchers create record-breaking solar cell, set bar marginally higher
Solar cell development is typically a small numbers game, and a group of researchers at the University of Toronto have managed to eke out a few more percentage points in efficiency with a new record-breaking cell. Setting a high mark for this type of cell, the team's Colloidal Quantum Dot (CQD) film harvests both visible and non-visible light at seven percent efficiency, a 37 percent increase over the previous record. The breakthrough was achieved by leveraging organic and inorganic chemistry to make sure it had fewer nooks and crannies that don't absorb light. With the advantages of relatively speedy and cheap manufacturing, the technology could help lead the way for mass production of solar cells on flexible substrates. In the meantime, check out the source for the scientific lowdown.
