New type of reducing manufacturing costs of solar cells
Thursday, November 5th, 2009Research breakthroughs to make solar battery can be used outside the production of silicon element. Scientists at the University of California at Los Angeles, said the results could significantly reduce the prices of solar energy.
Solar companies have been looking for efficiency and low cost of raw materials consumed less material than silicon. But for copper, indium, gallium compounds of selenium (CIGS) and material tests so far have not found a suitable Dell Inspiron 1300 battery, Dell Inspiron 1501 battery material.
William Hou University of California at Los Angeles for graduate engineering students, he said in a newspaper: “Human beings have a conversion efficiency of solar energy to 20%, but the high cost of current treatment methods so that production costs are too high, and current rates difficult to create competition. ”
Hou and his colleagues copper indium selenide solar cells cost, methods of effective treatment for this result was published in the week “solid films” magazine. They said that these batteries can be mass produced in the future and applied to many fields, such as mounted on backpacks or clothes.
Hou said: “With our new solution method, can easily reach 20% conversion efficiency and cost of production significantly decreased.”
Currently, researchers conducted 16 months of this project was the conversion efficiency of 9.13%, reaching 15% or 20% efficiency targets for conversion to be optimistic.
University of California at Los Angeles engineering professor Yang Yang led the research team, said: “16 months ago, we began to study from scratch, using a period of three or four months for material to reach 1% conversion efficiency, conversion efficiency today about 9%, with an average of about every two months increased 1%. ”
Most of CIGS solar cells produced using a total evaporation technique, you need to vacuum under the conditions, tedious and expensive. In the vacuum, the element is heated and deposited on the surface of cells.
The UCLA research team that invented the copper-selenide Indium (CIS) solar cells do not require a process of vacuum evaporation. Instead, they will be dissolved in the liquid material to adhere to the surface and cook. In the liquid, solar energy absorbing layer (using copper, indium, selenium, or CIGS materials, production, essential to the performance of solar cells) can be easily brush plated battery or chip.
Hou said: “In our approach, dissolved the benefits of technology is that it can continuously carry out the liquidation of production type, which is a significant cost breakthrough.
Yang said the technology can be achieved within three to four years in Dell Inspiron 1520 battery, Dell Inspiron 1525 battery business.
Mr. Yang also said: “In order to improve the performance of solar cells and efficiency at the same time, we also seek to work with industry to enable the continued development of technology.”
