Solar ♦ news digest


key contract manufacturing partner and Wells Fargo Business Credit. These agreements significantly improved the Company’s liquidity position while it processes and receives proceeds from insurance claims. The firm believes it has a solid plan in place to rebuild impacted business.


Emcore says its manufacturing infrastructure in the Photovoltaics segment was not impacted by the flooding.


The Company expects the revenues for its first quarter of fiscal year 2012 ending December 2011 to be in a range of $36 to $38 million with the sequential revenue decline primarily attributable to the flood impact to its Fibre Optics business.


Emcore discussed its financial results on 27 December 2011. The call has been archived for one year and can be accessed from the firm’s website.


Sun-Believable paint-on solar cells


Scientists say they have developed a solar paint which can be made cheaply and in large quantities. If the efficiency can be improved, they may be able to make a real difference in meeting energy needs in the future


Imagine if the next coat of paint you put on the outside of your home generates electricity from light- electricity that can be used to power the appliances and equipment on the inside.


A team of researchers at the University of Notre Dame has made a major advance toward this vision by creating an inexpensive “solar paint” that uses semiconducting nanoparticles to produce energy.


This paste of cadmium sulphide-coated titanium dioxide nanoparticles could turn large surfaces into solar cells. (Photo Credit: ACS Nano)


“We want to do something transformative, to move beyond current silicon-based solar technology,” says Prashant Kamat, John A. Zahm Professor of Science in Chemistry and Biochemistry and an investigator in Notre Dame’s Centre for Nano Science and Technology (NDnano), who leads the research.


“By incorporating power-producing nanoparticles, called quantum dots, into a spreadable compound, we’ve made a one- coat solar paint that can be applied to any conductive surface without special equipment.”


The team’s search for the new material, described in the journal ACS Nano, centred on nano-sized particles of titanium dioxide, which were coated with either cadmium sulphide or cadmium selenide. The particles were then suspended in a water-alcohol mixture to create a paste.


When the paste was brushed onto a transparent conducting material and exposed to light, it created electricity.


January / February 2012 www.compoundsemiconductor.net 175


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