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IBM launches low-cost photovoltaic cells

They had launched a new project last year, when the 'World Community Grid'. The goal was to build more efficient solar cells and lower costs. The start was given by the World Information Technology giant, IBM, and researchers at Harvard University, who in a joint statement, they called the development "a revolutionary step that will use the idle computing power to create large new reserves of clean energy. " Today, the turning point, indeed, "a first in the world," as they considered the same engineers Armonk. This is a new solar cell with a yield of 9.6 per cent, 40 per cent higher than in previous versions (which had stopped at around 6.5 per cento ), realizzata con rame, stagno, zinco, zolfo e selenio: tutti elementi abbondanti sul nostro pianeta e quindi a basso costo. La Big Blue raggiunge la vetta della ricerca fotovoltaica e, guai a perdere la propria identità secolare, la multinazionale americana ha comunque dichiarato che si limiterà solo a vendere la licenza della tecnologia, senza occuparsi direttamente della produzione. Tuttavia, la nuova cella fotovoltaica, chiamata CTZSS (acronimo delle iniziali dei nomi inglesi degli elementi costituenti), si può considerare in qualche modo il naturale sviluppo delle celle CIGS (rame, indio, gallio , selenio) che sono alla base degli attuali pannelli a film sottile. David Mitzi, manager della sezione Photovoltaic Science and Technology IBM Research, said that greater efficiency is gained by reporting the quality of the power levels achieved. "One of the potential effects on the quality of the movie-in fact, the specialist said, is due to the solvent that we used: hydrazine, which is capable of stabilizing metal chalcogenide anions in solution." According to IBM 's, then , the new cell has at least two conditions that may in future lead to a significant reduction in the prices of photovoltaic energy. The first, of course, the easy accessibility of the details ruguarda photoconductors used. In this case worth noting is the lack of Indio (criticized the high cost and scarsa disponiobilità), a differenza della tecnologia delle celle a film sottile CIGS e di Tellururo di Cadmio (criticato per i problemi di smaltimento a fine vita). Il secondo requisito, invece, è la modalità di produzione che può usare il processo ad immersione in una soluzione, a spray o addirittura a stampa, a scanso invece del costoso processo sotto vuoto delle celle a base di silicio.

Autore: Stefano De Mitri Data: 05/03/2010
Fonte: nextme.it

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Padova: work began on the roof of the world's largest solar

L’Interporto di Padova ospiterà la più grande istallazione fotovoltaica mai realizzata al mondo su una copertura. Un primato tutto italiano che oltre a ridurre le emissioni dannose produrrà energia clean and allow the use of 450 professionals

(Rinnovabili.it) - The laying of the 'cell' has been completed and probably will create the world's largest photovoltaic plant, which will be operational by the end of ' year. The modules produced by SOLON SpA, will go to cover the roofs of buildings, Interporto of Padua, make up the logistics sector, an area of \u200b\u200babout 250 thousand square meters will be installed where 67,500 solar modules, also arranged on the platform of the car parks. With a total capacity estimated at 15 MWp plant will generate 17 million kWh per year thanks to an investment was estimated in the sum of 50 million €. The clean energy produced will be able to cover the needs of 5000 families, creating 450 jobs that will contribute to green to complete one of the most ambitious projects in the photovoltaic industry, allowing a saving of carbon dioxide estimated at 9 thousand tonnes per year and avoiding the consumption of 3200 tons of petrolio.Ulteriore value for the system is to record the very small distance between the seat of SOLON and establishments that will host the forms. The minimum route will dramatically reduce emissions normally produced by the transportation of equipment related to the project by the establishment Interporto.

source: www.rinnovabili.it