Solar Chat

News by Oliver on May 19th, 2010 and filed under Technology. You can follow any responses to this news in RSS 2.0. You can leave a response, or trackback to this post

It has discovered a new mechanism by which can take place the photovoltaic effect in semiconductor thin films. This new path for electricity production is not affected by it suffer some limitation to conventional solar cells in the solid state.

Working with a ceramic made of bismuth, iron and oxygen, which also presents simultaneously ferroelectric and ferromagnetic properties, researchers at the Lawrence Berkeley National Laboratory (Berkeley Lab) have discovered the photovoltaic effect can occur spontaneously in the nano field as a result of structural distorted crystal in certain ceramics. They have also shown that applying an electric field makes it possible to manipulate this crystal structure and thus control the photovoltaic properties.

The physicist Jan Seidel, who works in the Division of Materials Sciences Laboratory in Berkeley, and in the Department of Physics, University of California at Berkeley, is one of the principal authors of this research, which also Yang Seung-yeul participated, Steven Byrnes, Padraic Shafer, Chan-Ho Yang, Marta Rossell, Pu Yu, Ying-Hao Chu, James Scott, Joel Ager, and Ramamoorthy Ramesh Martin Lane.

Seidel and collaborators found that, by applying the ceramic white light could generate high photovoltage within submicroscopic areas of dimensions of between one and two nanometers.

Seidel’s team also managed to use a 200 volt electrical pulse to reverse the polarity of the photovoltaic effect or turn it off completely. The ability to control so effectively the photovoltaic effect has never been documented in conventional photovoltaic systems. This capability provides the basis for new applications in nano-optics and nanoelectronics.

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Solar Energy in Ontario was almost as much electricity as all U.S. nuclear reactors, Studies Find

The studies, led by engineering professor at Queen Joshua Pearce, is the potential of solar energy first in the region to explore. Professor Pearce was how many would be produced gigawatts by surprise.

“We came in large numbers, and were conservative. There are about 95 gigawatts of potential only in southeastern Ontario – which indicates a huge potential,” says Professor Pearce, who specializes in solar photovoltaic and Sustainability Applied Materials, now I can power my Inspiron 6400 battery out of the door.

A study accepted for publication in the journal Computer discovered, environment and urban systems, that in choosing the roofs in southern Ontario were covered with solar cells, which could be five percent over five gigawatts of all products Ontario energy. The study took into account the roof orientation and shading.

“To put this in perspective, produce all the coal power plants across Ontario a little over six gigawatts. The sun does not always appear, so if solar power will couple with other renewable energy sources such as wind, hydro and biomass, southeastern Ontario could easily meet their energy needs, while solar power is not free, stable electron volts my Dell Inspiron 6400 battery, “says Professor Pearce.

A second study, published in the May issue of the journal Solar Energy looked, country in southeastern Ontario, which could be used for solar farms. The study considered the country with little economic value – barren, rocky and not suitable for building sites in the vicinity of the electricity system, laptop battery – and concluded that it has the potential to produce 90 gigawatts.

“Nuclear energy for all in the United States is approximately 100 gigawatts. We can only produce 90 to barren land with solar energy in this small space, so we’re not talking about little else,” says Professor Pearce.

The teacher conducted the research on decision-makers with solid numbers on solar energy potential and possible locations for the developer of solar parks in the future, we can image the solar panel can replace laptop battery charger in Africa.

A new contribution to the studies were civilians Reina student in mechanical engineering and engineering student Lindsay Wiginton Ha Nguyen.

Wind energy will help Turkey to meet the growing demand for electricity, wind energy capacity of Turkey set up since 2007 until the end of the year tripled, The powerbook g4 battery capacity from 50MW to 150MW; from 2008 until the end of the year once again tripled to reach 433MW;

 to 2009 end of the year almost doubled to reach 801MW. In addition, the Turkish government set up by 2023 in renewable inspiron 6400 battery energy 30% of the project plans to make wind power is set to 20,000 MW.

Turkey’s annual average growth rate of electricity demand of 8%, which means that if the goal to reach 20,000 MW wind  inspiron 6000 battery power, then wind power will meet Turkey in 2023 of an electricity demand / 5.

According to the Turkish Energy and Natural Resources Department’s analysis of Turkey’s wind energy potential of 160 TWh (48,000 MW), as is now twice the amount of  vgp bps2c vgp bps2a electricity consumption.

Turkey has a wind power development opportunities over the next 15 years, Turkey will increase investment in wind power.

In 2009, the construction of all new EU generation capacity of 39% for wind power generation, ahead of coal, natural gas and nuclear power. EU investment in the a1175 pa3399u 2brs sector about 130 million euros. The past 15 years, the annual wind power generating capacity to set the continued increase in average annual growth rate of 23%. As of January 2010, the EU set the total capacity of wind power 74,767 MW, providing 4.8% of electricity demand