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The Solar Power System Design And Simulation Research Based On The PbSe Quantum Dot Luminescent

Posted on:2014-01-24Degree:MasterType:Thesis
Country:ChinaCandidate:L C WuFull Text:PDF
GTID:2232330395997719Subject:Optical Engineering
Abstract/Summary:PDF Full Text Request
Recent years, the people began to be committed to finding a new typeof renewable clean energy because that the issues of energy and theenvironmental problems caused by it. Which the solar as a abundantreserves, inexhaustible clean green energy, has begun to attract theattention of a lot of people. Solar power is the focus of research anddevelopment in recent years as the use of solar energy. However, due tothe low photoelectric conversion efficiency of photoelectric conversionmaterials relatively, which is excessive and lack of competitivenesscompared with the traditional fossil energy, and hinders the further useand promotion of the solar power. Therefore, that researching the newmaterial with high photoelectric conversion efficiency, using the newtechnologies to reduce the cost of solar power and improvingcost-effective of solar power is the important research direction topromote the use of solar energy.Current research and development trends show that, due to the uniquequantum size effect and the dielectric confinement, quantum dot materialscan produce multi-exciton, reduce the loss of photo-generated hotcarriers, else possessing wide area absorption spectrum, so thephotoelectric conversion efficiency can be greatly improved. If we canmastered the synthesis method and properties of research to requiredquantum dot, and we can reduce the cost of the solar energy utilization.The paper discusses the development of the solar power at first, thenproposing the conception of quantum dots Luminescent Solar Concentrator,analyzing the properties of the research development situation of quantumdots and the advantage of PbSe quantum dots in the use of solar power atlast. We synthesized the PbSe quantum dots with different sizes by theway of William Yu, and measured the absorption and photoluminescencespectrum. Then we take the2.8nm PbSe quantum dot as the optical mediumof Luminescent Solar Concentrator, and get the optimized parameters, suchas the concentration of the PbSe quantum dot and the geometry parametersof Luminescent Solar Concentrator using Monte Carlo simulation method,finally our optical efficiency of solar power system is up to35.5%. Atthe end of the article, we introduce solar tracking control device briefly, which could improve the utilization of the solar energy because of solarintelligent tracking, otherwise the control device with automaticprotection program could close the optical components to prevent damageby gale during high winds or other inclement weather. Then we introducetwoWays of solar power generation system, compare our system with thetraditional solar power system, the solar power costs based PbSe quantumdots can be reduced by21.79%.
Keywords/Search Tags:PbSe quantum dots, LSC, Monte Carlo simulation, Solar power system
PDF Full Text Request
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