Researchers at UCLA‘s NanoSystems Institute recently announced that they have developed a transparent solar cell that may someday allow people to generate electricity from home and business windows while still being able to see outside. Here are the details.
* The newly developed polymer solar cells produce energy by absorbing infrared light rather than visible light.
* According to the NanoSystems Institute, this infrared light makes the cells nearly 70 percent transparent to the human eye.
* The polymer solar cells, made from photoactive plastic, converts light into electrical current.
* UCLA researchers have also developed a transparent conductor made of silver nanowire and titanium dioxide nanoparticles, which provide a 4 percent power-conversion efficiency for solution-processed and visibly transparent polymer solar cells, the NanoSystems Institute explained.
* Yang Yang, UCLA professor of materials science and engineering and director of the Nano Renewable Energy Center, stated that the research is in response to an “intense world-wide interest” in polymer solar cells.
* According to Solar Panel Manual , alternatives to conventional silicon PV cells are being researched due to the cost and complexity involved in producing them.
* The benefit of UCLA’s new polymer solar cells is that they are made from lightweight plastic-like materials that can be produced in high volume at low cost, the NanoSystems Institute reported.
* Bloomberg reports that UCLA’s new transparent film is suitable for highrise buildings, car sunroofs and consumer electronics and may eventually be sprayed onto surfaces.
* The Solor Panel Manual states that disadvantages to plastic polymer cells has been their lack of efficiency – currently between 3-5 percent — compared to silicon cells that offer efficiencies up to 17 percent.
* Plastic polymer cells also tend to degrade faster than silicon cells, due to sun exposure, the Solar Panel Manual stated.
* According to the NanoSystems Institute, previous attempts to make visibly transparent polymer solar cells have failed due to low transparency and device efficiency.
* Yang is quoted by Bloomberg as stating that he envisions robots someday spraying the film onto surfaces, as painting is sprayed in auto factories. His hope is that someday everyone’s window can someday bear a transparent film, much like Scotch Tape, and become a solar panel.
* A similar transparent solar polymer was developed by Konarka Technologies, Inc., Bloomberg reported. The company recently went out of business due to an oversupplied solar market.
* UCLA’s California NanoSystems Institute‘s study of new polymer solar cells is supported by the Henry Samueli School of Engineering and Applied Science, the Office of Naval Research and The Kavli Foundation.
Related posts:
Views: 0