Google translate gives:

A Swedish research team has succeeded in increasing the efficiency of the second-generation solar cells to 21 percent. That means a new world record.
Behind advance standing company Solibro in Uppsala, working with so-called thin-film solar cells. Thin film technology requires less material and energy to produce than the most common type of solar panels, made ​​of silicon.

"We have experimented with the composition of the various metals as the solar cell consists of and additionally doped material by adding other substances. There is a certain ideal composition for maximum capture of solar photons. Now we have come closer to it, "says Mats Ljunggren, CEO of Soli Bros. research company.

That the efficiency rises means that a higher proportion of the solar energy that hits the panels can be converted into electricity.

Solibro owned by the Chinese energy company Hanergy but the company's research and development in Sweden. Hanergy is now building a factory in China to increase production substantially, which also lowers the price per watt of solar panels.

"The technology behind the 21 percent that we have now achieved is close to coming into production. But one should remember that the record is set on a solar cell is a square centimeter in size. It's harder to get the same capacity over a square meter panel, "says Mats Ljunggren.

Solar power is becoming cheaper to produce. This week, announced the American company Siva Power that it expects that within four years to produce second-generation solar cells for 1 penny and 92 cents per watt. It is the lowest level that any company so far has gone out with.

Johan Lindahl researching the solar cells at Uppsala University, says that the move towards more solar power would be faster if the global commercial solar cell production reached down to the price level.

"If that happens, solar energy will grow very quickly. Lot with me believe that sun will eventually become one of the largest if not the largest energy source in the world. If we are to meet climate goal of a maximum of two degrees warming of the globe requires solar energy to account for almost 20 percent of the total electricity supply in the world in 2050, "he says, referring to the International Energy Agency IEA