稀土发光材料Eu(2mCND)_4CTAC及薄膜的耐老化性能研究
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摘要
下转换发光材料稀土铕配合物Eu(2mCND)_4CTAC可以有效的将紫外光转换为可见光,将稀土发光材料和有机薄膜载体结合并负载于电池表面后,晶硅太阳能电池的光电转换效率得到了显著提高。光转换薄膜在户外使用时存在着一定的老化现象,这不仅严重影响到光转换薄膜的使用寿命,甚至可能对晶硅电池产生负面效应而造成巨大的经济损失。研究了将Eu~(3+)配合物与PMMA薄膜载体相结合后制备了五种浓度的光转换薄膜,并对光转换材料和光转换薄膜进行了紫外箱加速老化和户外老化实验。实验表明,稀土发光材料的老化性能优良,在5000小时加速老化或1.5年的户外老化后量子产率不变;Eu~(3+)配合物浓度为1%的薄膜老化性能最好,初始量子产率最高且在老化一段时间后量子产率趋于稳定;光转换薄膜的室内加速老化和户外老化存在一定的时间对应关系。本次研究系统评价了光转换材料和薄膜的老化性能,对预测光转换薄膜的使用寿命具有一定的指导意义。
Down-conversion luminescent complexes Eu(2mCND)_4CTAC can effectively convert ultraviolet light into visible light. Light conversion film containing such luminescent material can significantly improve the photoelectric conversion efficiency of crystal silicon solar battery once loaded on the surface of the battery. While there is an aging phenomenon in the outdoor use of light conversion film,which not only affects the life of the film,but may even have a negative effect on the crystalline silicon cell,which causes huge economic loss. In this study,five films with different concentrations were prepared by combining Eu~(3+) complex with PMMA film carrier,then indoor and outdoor aging experiments were carried out for the films and luminescent material. The test shows that the luminescent has good anti-aging properties. After 5000 hours of accelerated aging or 1. 5 years of outdoor aging,the quantum yield of such complex remained constant. It also indicates that anti-aging properties of PMMA film is the best when the content of Eu~(3+) complexes is 1%. The initial quantum yield of the luminescent material is the highest and then tend to be stable after aging for some time. In addition,there is a certain time correlation between the accelerated aging and outdoor aging experiment of the light conversion film. This research systematically evaluates the anti-aging properties of light conversion materials and films,which has a certain guiding significance for predicting the service life of light conversion films.
Down-conversion luminescent complexes Eu(2mCND)_4CTAC can effectively convert ultraviolet light into visible light. Light conversion film containing such luminescent material can significantly improve the photoelectric conversion efficiency of crystal silicon solar battery once loaded on the surface of the battery. While there is an aging phenomenon in the outdoor use of light conversion film,which not only affects the life of the film,but may even have a negative effect on the crystalline silicon cell,which causes huge economic loss. In this study,five films with different concentrations were prepared by combining Eu~(3+) complex with PMMA film carrier,then indoor and outdoor aging experiments were carried out for the films and luminescent material. The test shows that the luminescent has good anti-aging properties. After 5000 hours of accelerated aging or 1. 5 years of outdoor aging,the quantum yield of such complex remained constant. It also indicates that anti-aging properties of PMMA film is the best when the content of Eu~(3+) complexes is 1%. The initial quantum yield of the luminescent material is the highest and then tend to be stable after aging for some time. In addition,there is a certain time correlation between the accelerated aging and outdoor aging experiment of the light conversion film. This research systematically evaluates the anti-aging properties of light conversion materials and films,which has a certain guiding significance for predicting the service life of light conversion films.
引文
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[2]徐机玲,蔡玉高.太阳能利用新突破[J].瞭望新闻周刊,2004,(39):59-60.Xu J L,Cai Y G.New breakthroughs in solar energy utilization[J].Outlook Weekly,2004,(39):59-60.
[3]王峥,任毅.我国太阳能资源的利用现状与产业发展[J].资源与产业,2010,12(2):89-92.Wang Z,Ren Y.Utilization development of solar energy resources in China[J].Resources&Industries,2010,12(2):89-92.
[4]张晓安.我国太阳能光伏利用的现状,存在问题及其对策[J].合肥工业大学学报(社会科学版),2009,23(6):18-23.Zhang X A.Status quo and existing problems of the photovoltaic application of solar energy and countermeasures[J].Journal of Hefei University of Technology(Social Sciences),2009,23(6):18-23.
[5]T M Razykov,C S Ferekides,D Morel,et al.Solar photovoltaic electricity:Current status and future prospects[J].Solar Energy,2011,85(8):1580-1608.
[6]李柯,何凡能.中国陆地太阳能资源开发潜力区域分析[J].地理科学进展,2010,29(9):1049-1054.Li K,He F N.Analysis on mainland China’s solar energy distribution and potential to utilize solar energy as an alternative energy source[J].Progress in Geography,2010,29(9):1049-1054.
[7]Tom T,Eli Y,George D C,et al.Limiting efficiency of silicon solar cells[J].IEEE Trans Electron Devices,1984,31(5):711-716.
[8]李俊泓.晶硅太阳能电池发展状况及趋势分析[J].科技创新与应用,2017,(1):18.Li J H.Development status and trend analysis of crystalline silicon solar cells[J].Technology Innovation and Application,2017,(1):18.
[9]杨建虎,戴世勋,姜中宏.稀土离子的上转换发光及研究进展[J].物理学进展,2003,23(3):284-298.Yang J H,Dai S X,Jiang Z H.Up-conversion emission of rare earth ions and its recent developments[J].Progress in Physics,2003,23(3):284-298.
[10]Luo X,Cao W,Xing M.Up-conversion luminescence properties of monodisperse spherical Y2O2S:Yb,Ho nanocrystals[J].Journal of Materials Research,2009,24(5):1756-1760.
[11]B S Richards.Enhancing the performance of silicon solar cells via the application of passive luminescence conversion layers[J].Solar Energy Materials and Solar Cells,2006,90(15):2329-2337.
[12]Wang T,Yu B,Hu Z,et al.Enhancing the performance of multi-crystalline silicon photovoltaic module by encapsulating high efficient Eu3+complex into its preexisting EVA layer[J].Optical Materials,2013,35(5):1118-1123.
[13]Li W,Fan X.Photovoltaic properties of silicon solar cells with lanthanide complexes doped coating[J].Rare Metal Materials&Engineering,2008,37(3):80-83.
[14]檀满林,尚旭冉,马清,等.YVO4∶Eu3+@Si O2下转换发光特性及其太阳电池应用研究[J].无机材料学报,2016,31(10):1110-1116.Tan M L,Shang X R,Ma Q,et al.Down-conversion photoluminescence properties of YVO4∶Eu3+@Si O2core-shell structures for solar cell applications[J].Journal of Inorganic Materials,2016,31(10):1110-1116.
[15]张立业,张忠义,孔祥薇,等.Eu(DBM)3phen配合物提高非晶/微晶叠层硅薄膜太阳能电池效率的研究[J].稀土,2016,37(5):35-40.Zhang L Y,Zhang Z Y,Kong X W,et al.The study of rare earth Eu3+complex improving efficiency of amorphous/microcrystalline silicon thin film solar cells[J].Chinese Rare Earths,2016,37(5):35-40.
[16]申孟林,段西健,张忠义,等.铕化合物对光伏电池光电转换效率的影响[J].稀土,2016,37(3):27-30.Sheng M L,Duan X J,Zhang Z Y,et al.Europium complexes’influence on photoelectric conversion efficiency of photovoltaic cell[J].Chinese Rare Earths,2016,37(3):27-30.