U.S. Department of Energy (DOE) under the Institute “National Renewable Energy Laboratory (Natonational Renewable Energy Laboratory, NREL) researchers David Ginley on September 15, 2010, held at Nagasaki University is the 71st of Applied Physics Lectures Council, Acer Laptop Battery in talking about human promising solar battery that is currently the fastest performance improvement of organic solar cells. “conversion efficiency of close to 10 ~ 12%. In the long run, is expected to reach 15% conversion efficiency, life expectancy is expected to reach 10 years “(Ginley). In addition, Ginley that the rapid degradation of organic solar cells, one of the reasons is that the organic thin film solar cells commonly used hole transport material (HTL ) PEDOT: PSS, and have been found to be able to replace the material.
Ginley will be created in the Applied Physics seminar “Prospects of Semiconductor Researches in Asia-VLSI and Solar Cell-” on the “Materials Optimization for Enhanced Performance of Organic Photovoltaic Devices” was published the speech.
Ginley first emphasized in his speech, “Solar power is the lowest possible cost to prevent one of the best solution to global warming.”Acer BTP-AQJ1 Battery, Acer BTP-ARJ1 Battery, Acer BATCL32 battery, Acer BATCL32L battery, But Ginley also pointed out that “the present situation, such as solar power generation performance of this approach have not yet reached the condition can be achieved. For future solar cells, the key is only used to further develop a common material on Earth can manufacturing technology, Acer BTP-AQJ1 Battery, low-cost mass production. ”
This means that, although around the world each year 10GW solar cell was manufactured and put into use, but to the formation of the global warming impact of the real, in fact, need to (for the current hundred times or more) to the scale of annual TW production. To achieve this goal, the most important thing is to to try to make low-cost solar cells and can only rely on a steady supply of materials can be produced.
As the most powerful candidate, Ginsley that organic solar cells, that is, organic thin-film solar cells and dye-sensitized solar cells. The reason is “the fastest current conversion efficiency, but also is expected to achieve low-cost mass production” (Ginsley). “From the current conversion efficiency of organic thin-film solar cells of view, more than 8% of the unit, the module increased to 4%. Life is close to 1 million hours. Cell conversion efficiency is 10 ~ 12% chance that has emerged, is expected to achieve in future conversion efficiency of more than 15%, Acer BTP-ARJ1 Battery, increasing life expectancy to 10 years the target “(Ginsley).
Although organic solar cells 10-year life than crystalline silicon solar cells much shorter than 20 years, but “Life does not need to reach more than 20 years long. Because (the organic solar cell) manufacturing costs far less than the crystallization silicon solar cell, even if broken can be replaced at low cost “(Ginsley).
However Ginley that he considered for organic solar cells, the increased life expectancy remains the biggest issue. Ginley specific concerns that are commonly used as HTL materials, PEDOT: PSS low stability, there is “from the electrode and the interface between p-type semiconductor start degradation” (Ginsley) problem. Ginley said, NREL made available nickel oxide (NiO) to solve the PEDOT: PSS existence of the subject.
NREL on the life of nickel oxide and generation performance and PEDOT: PSS in detail, the results show that the “use of power when the performance of nickel oxide and PEDOT: PSS the same, and stability is much higher than the PEDOT: PSS” (Ginsley).
However, in addition to a subject. That is,Acer BATCL32 battery, HTL use of nickel oxide, if the p-type semiconductor material is still the original words of P3HT in the band gap control of this point, there may be the best combination of the two can not be the case.
However, NREL claims to have found a solution to this issue of the p-type semiconductor material. This is called “PCDTBT” (poly (N-9-heptadecanyl-2, 7 – carbazole-alt-5, 5 – (4,7-di-2-thienyl-2 ,1,3-benzothiadiazole)) of the material .
In fact, in the use of named ITO / NiO / PCDTBT / PCBM / Ca / Al structure components of the area of trial, after the solar 1cm2 showed that conversion efficiency of 6.7%. PCDTBT alternative to nickel oxide and PEDOT: PSS and P3HT, the conversion efficiency of 5.7%. NREL and the University of Colorado (University of colorado) K. Steirer and other researchers will be recently published a paper on the research in detail.
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