Multilayer, microscale solar cells enable ultra-high efficiency power generation.

This gives Efficiency of 43.9%,Printing based assembly of quadruple junction,four terminal micro scale solar cells allows realization of extremely high efficiency modules.
The project involved a collaborative team of researchers at the University of Illinois and the photovoltaic companies Semprius and Solar Junction. According to the group’s paper.
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The project involved a collaborative team of researchers at the University of Illinois and the photovoltaic companies Semprius and Solar Junction. According to the group’s paper, the module’s top cell consists of a three-junction (3J) microcell with its own anti-reflective coating to ensure efficient transmission of light to the uppermost layers. The bottom cell uses a diffused-junction germanium (Ge) architecture. In a stacked 3J/Ge assembly, the top 3J cell captures light with wavelengths between 300 nm and 1,300 nm. Wavelengths from 1,300 nm to 1,700 nm pass through to the bottom Ge cell with minimal interface reflections, due to the use of a thin layer of a unique type of chalcogenide glass. - See more at: http://engineering.illinois.edu/news/article/7958#sthash.2yr50MuB.dpuf

“Printing-based assembly of quadruple-junction four-terminal microscale solar cells allows realization of extremely high-efficiency modules, - See more at: http://engineering.illinois.edu/news/article/7958#sthash.2yr50MuB.dpuf

“Printing-based assembly of quadruple-junction four-terminal microscale solar cells allows realization of extremely high-efficiency modules, - See more at: http://engineering.illinois.edu/news/article/7958#sthash.2yr50MuB.dpuf

“This is a high-throughput, parallel assembly process that allows for simultaneous formation of arrays of stacked multi-junction cells in a fully automated step-and-repeat mode with high yields—greater than 95 percent—and accurate overlay registration. A newly developed interfacial material for these stacks enables ideal optical, electrical, and thermal properties. ” stated Xing Sheng, a postdoctoral fellow with Rogers’ research group and first author of the paper, “Printing-based assembly of quadruple-junction four-terminal microscale solar cells allows realization of extremely high-efficiency modules,” published this week in the journal Nature Materials. - See more at: http://engineering.illinois.edu/news/article/7958#sthash.2yr50MuB.dpuf

“This is a high-throughput, parallel assembly process that allows for simultaneous formation of arrays of stacked multi-junction cells in a fully automated step-and-repeat mode with high yields—greater than 95 percent—and accurate overlay registration. A newly developed interfacial material for these stacks enables ideal optical, electrical, and thermal properties. ” stated Xing Sheng, a postdoctoral fellow with Rogers’ research group and first author of the paper, “Printing-based assembly of quadruple-junction four-terminal microscale solar cells allows realization of extremely high-efficiency modules,” published this week in the journal Nature Materials. - See more at: http://engineering.illinois.edu/news/article/7958#sthash.2yr50MuB.dpuf

“This is a high-throughput, parallel assembly process that allows for simultaneous formation of arrays of stacked multi-junction cells in a fully automated step-and-repeat mode with high yields—greater than 95 percent—and accurate overlay registration. A newly developed interfacial material for these stacks enables ideal optical, electrical, and thermal properties. ” stated Xing Sheng, a postdoctoral fellow with Rogers’ research group and first author of the paper, “Printing-based assembly of quadruple-junction four-terminal microscale solar cells allows realization of extremely high-efficiency modules,” published this week in the journal Nature Materials. - See more at: http://engineering.illinois.edu/news/article/7958#sthash.2yr50MuB.dpuf

“This is a high-throughput, parallel assembly process that allows for simultaneous formation of arrays of stacked multi-junction cells in a fully automated step-and-repeat mode with high yields—greater than 95 percent—and accurate overlay registration. A newly developed interfacial material for these stacks enables ideal optical, electrical, and thermal properties. ” stated Xing Sheng, a postdoctoral fellow with Rogers’ research group and first author of the paper, “Printing-based assembly of quadruple-junction four-terminal microscale solar cells allows realization of extremely high-efficiency modules,” published this week in the journal Nature Materials. - See more at: http://engineering.illinois.edu/news/article/7958#sthash.2yr50MuB.dpuf

Transparent Solar Cells

MIT researchers are making transparent solar cells that could turn everyday products such as windows and electronic devices into power generators—without altering how they look or function today. How? Their new solar cells absorb only infrared and ultraviolet light. Visible light passes through the cells unimpeded, so our eyes don’t know they’re there. Using simple room-temperature methods, the researchers have deposited coatings of their solar cells on various materials and have used them to run electronic displays using ambient light. They estimate that using coated windows in a skyscraper could provide more than a quarter of the building’s energy needs without changing its look. They’re now beginning to integrate their solar cells into consumer products, including mobile device displays. For Read More >>> Click here<<<<

Fuel Cell Electric Vehicles

Fuel cell electric vehicles, powered by hydrogen, have the potential to revolutionize our transportation system. They are more efficient than conventional internal combustion engine vehicles and produce no harmful tailpipe exhaust—their only emission is water. Fuel cell vehicles and the hydrogen infrastructure to fuel them are in an early stage of deployment. The U.S. Department of Energy is leading government and industry efforts to make hydrogen-powered vehicles an affordable, environmentally friendly, and safe transportation option. Hydrogen is considered an alternative fuel under the Energy Policy Act of 1992 and qualifies for alternative fuel vehicle tax credits.