Sharp develops solar cell with record efficiency of 37 percent
By Yuri Nijs , Saturday, November 5, 2011 10:17, views: 14,785
Sharp has a prototype solar cell efficiency increased to 36.9 percent. The manufacturer, the percentage reached by the resistance between the three layers where the cells are built to reduce. How this works exactly, is unclear.
The solar cells are made up of several photovoltaic layers two or more elements such as indium and gallium contained. Because of their efficiency solar cells with this type of compound used in particular satellites.
Sharp claims that the resistance between the three layers has been able to reduce, without going into details how this is accomplished. The percentage of 36.9 percent would be a record. Improving the efficiency goes in small steps. In 2009, Sharp knew even to achieve an improved conversion. The company achieved when the same photovoltaic layers an efficiency of nearly 35.8 percent.
And what after 25-30 years if they do not yield enough anymore? I think people forget that there is not really thought about recycling or reworking of the solar panels
There is certainly thought: http://pvrecycling.com/
There is indeed thought: The aluminum, silicon and glass can all be recycled and is cheaper than using new materials. (All the raw materials used for standard silicon solar panels are also available in abundance)
, the reason that recycling is not yet widely done is replace only meaningful if all the roofs in the Netherlands are completely full, until then you can improve the new alongside the old lay. Even in Germany (now + / – 20 Gwatt = + / – 150 million m 2 ), they are not all roofs full, and if they did would it have even on cloudy days too much power.
The warranty on solar panel is often less than 80% after 20 years, but there is no obvious reason why silicon solar panels over time would be less.