New Solar Cell

“Reconstructing the chloroplast” Shanghai Introduces New Light-harvesting solar power

The magic of photosynthesis in plants, is expected to help people achieve the dream of clean energy. Recently, this reporter learned from the Shanghai Science and Technology, East China Normal University researchers using nano-materials in the laboratory successfully “re chloroplast” in order to achieve a very low cost energy generation.

Chloroplast is the site of photosynthesis of plants, can convert sunlight into chemical energy. This time, East China Normal University, Sun Zhuo discussion group is not in the plant in vitro “copy” of a chloroplast, but to nature as inspiration, developed a similar structure with the chloroplast new battery – dye sensitized solar cells and try to light energy into electricity. Shanghai Nano Special Fund in support of, after three years of experiment and exploration, this piece of bionic photoelectric conversion efficiency of solar cells for more than 10%, nearly 11% of the world’s highest level.

Project Leader, East China Normal University is satisfied with the advanced equipment Optoelectronic Integrated Engineering Research Center Director, Professor Sun Zhuo, showed reporters a new type of solar cells, “sandwich” structure – hollow glass sandwiched layer of nano-”sandwich”, photoelectric conversion mystery is hidden in the tens of microns thick composite film. Deep inside, nano “sandwich” and “formula” is unique: dyes act as “catch light hand”, nano titanium dioxide is “electron converter.” Dyes as much as possible in order to “eat” the sun, researchers even inspired to “withdraw” the point “seasoning” – a kind of fluorescent material by the nano quantum dots, so that different wavelengths of light can be on the “Light-harvesting hand” and “appetite.” As long as the continuous improvement of “formula” nano “sandwich” of the photoelectric conversion efficiency can be increased again.

Speaking of solar power, it is not strange. To monocrystalline silicon or polycrystalline silicon as the main raw material of solar panels are increasingly dotted the city building roofs and walls, as a clean and pollution-free solar power seat. However, this is known as “Green Power” behind, but hides a series of high-energy, high-polluting production processes. Despite its photoelectric conversion efficiency as high as 15% to 20%, but prices of raw materials and the purification process by the restrictions, power generation costs are still high.

In 1991, the “Nature” magazine reported the simulation of plant photosynthesis Swiss scientists invented the world’s first dye-sensitized solar cells in scientific research, the photoelectric conversion efficiency of optical irradiation up to 7% to 8%, this New low-cost photovoltaic cells soon become the world’s research focus.

Experts believe that, as the third generation of solar cells, dye-sensitized cells is the biggest attraction of cheap raw materials and simple production process. It is estimated that the cost of dye-sensitized cell silicon cell panels equal to only 1 / 10. At the same time, light conditions do not ask it, even if not enough room in the sun, the photoelectric conversion rate will not be affected significantly. In addition, it also has many interesting uses. For example, replace glass with plastic “splints” can be made of curved flexible battery; will make it into a monitor, you can while power generation, while light, to achieve energy self-sufficiency.

“Of course, to promote large-scale application of dye-sensitized solar cells are still some weaknesses to be overcome.” Zhuo said Sun, the next step, scientists will address such cells reduces the efficiency of amplification with the area’s problems, while a further extension its service life.

Related to:

thinkpad t43 battery ,
thinkpad t60 battery ,
thinkpad x60 battery ,
thinkpad x61 battery ,
thinkpad z60t battery .