Tag Archives | Solar Energy

Japan Opposed to Further Nuclear Power

The Japanese government is taking on a bold initiative to decrease the country’s reliance on nuclear energy by raising the cost of incentives utility companies must pay to consumers to encourage their use of solar power.

The incentives start July 1 to drive sales for equipment makers from Yingli Green Energy Holdings Co. to Kyocera Corp. Japanese companies Kyocera and Sharp Corp. are busily preparing to supply their home market. Yingli, based in Baoding, China, has already established a unit in Japan. Lots of other companies are also preparing to take advantage of subsidies offered by Japan.  Continue Reading →

Rem Koolhaas Of OMA Unveiled Masterplan Zeekracht

Masterplan Zeekracht by OMA

On January 13th, Rem Koolhaas presented his plan to create a ring of windmills, which will ultimately provide as much energy as the oil in the Persian Gulf now.

His masterplan Zeekracht consists of a ring of cables between several windmill parks that will create a network between seven ‘North Sea countries’.
The architects thinks Europe can be ‘reasonable independent’ from oil and gas energy in 2050, thanks to wind and solar energy.

Read the whole translated press release: www.zeekracht.nl.

For more impressions of this project click here.

New Multi-Junction Solar Cells Reaches 41.1% Efficiency

world record solar cellResearchers at the Fraunhofer Institute for Solar Energy Systems ISE have achieved a record efficiency of 41.1% for the conversion of sunlight into electricity. Sunlight is concentrated by a factor of 454 and focused onto a small 5 mm² multi-junction solar cell made out of GaInP/GaInAs/ Ge (gallium indium phosphide, gallium indium arsenide on a germanium substrate).

“We are elated by this breakthrough,” says Frank Dimroth, head of the group “III-V – Epitaxy and Solar Cells” at Fraunhofer ISE. “At all times the entire team believed in our concept of the metamorphic triple-junction solar cells and our success today is made possible only through their committed work over the past years.”

Since 1999, Fraunhofer ISE has been developing metamorphic multi-junction solar cells, which are a special type of solar cells using III-V semiconductor compounds. In contrast to conventional solar cells, the semiconductors in these cells do not have the same lattice constant (distance between the atoms in a crystalline structure). This makes it difficult to grow the III-V semiconductor layers with a high crystal quality, since at the interface of materials with different lattice constants strain is present that results in the creation of dislocations and other crystal defects. The researchers at Fraunhofer ISE have succeeded in overcoming this obstacle. Continue Reading →