Philips Solar Street Lighting

NXP Semiconductors has developed an innovative, sustainable and highly efficient solar-powered street lighting solution, together with Philips Lighting. The groundbreaking Solar Gen2 solution, demonstrated by NXP at CES 2012, could have a major impact on energy consumption in urban areas at night. By charging street lamps during daylight hours, the new solar-powered solution from Philips Lighting and NXP can supplement the capacity of the conventional electricity grid, saving money and reducing CO2 emissions. http://www.nxp.com/news/press-releases/2012/01/nxp-demonstrates-groundbreakin…

The key to the breakthrough lies in the combination of new High Brightness LEDs and unique patented optics from Philips Lighting, together with NXP’s MPT61x range of configurable ICs for Maximum Power Point Tracking (MPPT), which can deliver 98% power conversion efficiency in solar photovoltaic (PV) cells.

NXP MPT612 Maximum Power Point Tracking (MPPT) IC: http://www.nxp.com/pip/MPT612

Painting Solar Cells with Nanoparticle Paste

Researchers at Notre Dame have developed a solar cell that is remarkably easy to assemble because the middle layer can be painted onto a clear electrode.  First, they mix t-butanol, water, cadmium sulfide and titanium dioxide for 30 minutes. Next, they mask off a clear electrode with office tape. Once the tape is in place, they spread the mixture onto the electode and then anneal it with a heat gun.  Finally, they sandwich an electrolyte solution between the new electrode and a graphene composite electrode.  And then, it’s time for testing under a beam of artificial light.

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