A new transparent photovoltaic panel composed of a luminescent solar concentrator and Al/BaTiO3/ZnO/Pt ferroelectric solar cells is presented,in which a portion of the incoming solar illumination is converted by the f...A new transparent photovoltaic panel composed of a luminescent solar concentrator and Al/BaTiO3/ZnO/Pt ferroelectric solar cells is presented,in which a portion of the incoming solar illumination is converted by the fluorophores to ultraviolet(UV)light which is then absorbed by ZnO.Firstly,the solar cells are simulated using Atlas-Silvaco.Then,the panel is modelled based on the obtained solar cell characteristics.This panel would be of great importance for building integrated photovoltaics domain because of its high transparency.展开更多
The objective of this present study is to manufacture a new silicone-based adhesive which is used for gluing and bonding the second optical elements (SOE) with Concentrating Photovoltaic solar cell (CPV) in order to g...The objective of this present study is to manufacture a new silicone-based adhesive which is used for gluing and bonding the second optical elements (SOE) with Concentrating Photovoltaic solar cell (CPV) in order to guarantee a thickness that can provide a good silicone adherence to obtain long term stability and keeping a good solar transmittance performance, too. This new adhesive is made up of a mixture of silicone and transparent glass balls. The experimental part consists of the choice of the best size of glass balls with the suitable proportion of the glass balls weight in the mixture. For this purpose, ten samples were manufactured for every category of glass balls and weight ratio. Glass ball sizes between 100 and 1100 μm, and weight ratios between 1 and 10% were analyzed. For each category of glass balls, four proportions were mixed with the silicone. The thicknesses and transmittance of every sample were measured with appropriate instruments. The experimental results illustrate that the mixture containing balls with sizes inferior to 106 μm, is the best mixture which assures adhesive minimum thickness value necessary for an efficient mechanical bond and preserves also a good transmittance of solar irradiance.展开更多
A novel hybrid solar concentrating Photovoltaic/Thermal (CPV/T) system with beam splitting technique is presented. In this system, a beam splitter is used to separate the concentrated solar radiation into two parts: o...A novel hybrid solar concentrating Photovoltaic/Thermal (CPV/T) system with beam splitting technique is presented. In this system, a beam splitter is used to separate the concentrated solar radiation into two parts: one for the PV power generation and the other for thermal utility. The solar concentrator is a flat Fresnel-type concentrator with glass mirror reflectors. It can concentrate solar radiation onto solar cells with high uniformity, which is beneficial to improving the efficiency of solar cells. The thermal receiver is separated to the solar cells, and therefore, the thermal fluid can be heated to a relatively high temperature and does not affect the performance of solar cells. A dimensionless model was developed for the performance analysis of the concentrating system. The effects of the main parameters on the performance of the concentrator were analyzed. The beam splitter with coating materials Nb2O3 /SiO2 was designed by using the needle optimization technique, which can reflect about 71% of the undesired radiation for silicon cell(1.1m < 3m) to the thermal receiver for thermal utility. The performance of this CPV/T system was also theoretically analyzed.展开更多
利用恒压频闪式I-V曲线测试仪研究分析温度和光强对聚光硅电池特性参数的影响。研究发现,聚光硅电池开路电压V_(oc) 的温度系数随聚光比升高不断降低,从1倍聚光比的-1.97 m V/K降低到30倍聚光比的-1.71 m V/K,和其理论计算值吻合较好;...利用恒压频闪式I-V曲线测试仪研究分析温度和光强对聚光硅电池特性参数的影响。研究发现,聚光硅电池开路电压V_(oc) 的温度系数随聚光比升高不断降低,从1倍聚光比的-1.97 m V/K降低到30倍聚光比的-1.71 m V/K,和其理论计算值吻合较好;和普通单晶硅电池开路电压V_(oc) 温度系数相比,该电池的要小,上述说明聚光硅电池在聚光下工作有利于其在较高温度下操作。聚光硅电池填充因子和效率均随温度升高而降低;由于串联电阻影响,该电池效率随聚光比的增大先增后减,适合在小于20倍聚光比下的系统中工作。可进一步优化该电池金属栅线覆盖率和阻值引起的功率损失以提高其适合应用的聚光比。展开更多
为把直接液浸冷却方式应用于采用密排III-V族电池组件的高倍聚光光伏系统,分析了适用于浸没冷却高倍聚光下III-V族聚光三结电池候选液体的种类、液膜厚度对Ga In P/Ga In As/Ge聚光三结电池电性能的影响,探索了该电池在液浸条件下电性...为把直接液浸冷却方式应用于采用密排III-V族电池组件的高倍聚光光伏系统,分析了适用于浸没冷却高倍聚光下III-V族聚光三结电池候选液体的种类、液膜厚度对Ga In P/Ga In As/Ge聚光三结电池电性能的影响,探索了该电池在液浸条件下电性能变化的机理.结果表明:不同液体液膜厚度对聚光三结电池短路电流的影响远大于对其开路电压的影响;随着浸没液体厚度的不断增加,聚光三结电池的效率呈现先升高后降低的趋势,在4.0 mm液厚时效率达到最大,其中化妆级白油在此厚度浸没下电池效率可提升8.99%.机理分析表明:薄液膜的存在降低了聚光三结电池表面的菲涅尔反射的光学效应和液体分子的吸附降低了电池表面复合速率的电学效应是引起电池效率提升的主要原因.展开更多
文摘A new transparent photovoltaic panel composed of a luminescent solar concentrator and Al/BaTiO3/ZnO/Pt ferroelectric solar cells is presented,in which a portion of the incoming solar illumination is converted by the fluorophores to ultraviolet(UV)light which is then absorbed by ZnO.Firstly,the solar cells are simulated using Atlas-Silvaco.Then,the panel is modelled based on the obtained solar cell characteristics.This panel would be of great importance for building integrated photovoltaics domain because of its high transparency.
文摘The objective of this present study is to manufacture a new silicone-based adhesive which is used for gluing and bonding the second optical elements (SOE) with Concentrating Photovoltaic solar cell (CPV) in order to guarantee a thickness that can provide a good silicone adherence to obtain long term stability and keeping a good solar transmittance performance, too. This new adhesive is made up of a mixture of silicone and transparent glass balls. The experimental part consists of the choice of the best size of glass balls with the suitable proportion of the glass balls weight in the mixture. For this purpose, ten samples were manufactured for every category of glass balls and weight ratio. Glass ball sizes between 100 and 1100 μm, and weight ratios between 1 and 10% were analyzed. For each category of glass balls, four proportions were mixed with the silicone. The thicknesses and transmittance of every sample were measured with appropriate instruments. The experimental results illustrate that the mixture containing balls with sizes inferior to 106 μm, is the best mixture which assures adhesive minimum thickness value necessary for an efficient mechanical bond and preserves also a good transmittance of solar irradiance.
基金supported by the National Basic Research Program of China ("973" Program), (Grantt No. 2010CB227305)the CAS Solar Energy Action Program (Grant No. CX2090130012)
文摘A novel hybrid solar concentrating Photovoltaic/Thermal (CPV/T) system with beam splitting technique is presented. In this system, a beam splitter is used to separate the concentrated solar radiation into two parts: one for the PV power generation and the other for thermal utility. The solar concentrator is a flat Fresnel-type concentrator with glass mirror reflectors. It can concentrate solar radiation onto solar cells with high uniformity, which is beneficial to improving the efficiency of solar cells. The thermal receiver is separated to the solar cells, and therefore, the thermal fluid can be heated to a relatively high temperature and does not affect the performance of solar cells. A dimensionless model was developed for the performance analysis of the concentrating system. The effects of the main parameters on the performance of the concentrator were analyzed. The beam splitter with coating materials Nb2O3 /SiO2 was designed by using the needle optimization technique, which can reflect about 71% of the undesired radiation for silicon cell(1.1m < 3m) to the thermal receiver for thermal utility. The performance of this CPV/T system was also theoretically analyzed.
文摘利用恒压频闪式I-V曲线测试仪研究分析温度和光强对聚光硅电池特性参数的影响。研究发现,聚光硅电池开路电压V_(oc) 的温度系数随聚光比升高不断降低,从1倍聚光比的-1.97 m V/K降低到30倍聚光比的-1.71 m V/K,和其理论计算值吻合较好;和普通单晶硅电池开路电压V_(oc) 温度系数相比,该电池的要小,上述说明聚光硅电池在聚光下工作有利于其在较高温度下操作。聚光硅电池填充因子和效率均随温度升高而降低;由于串联电阻影响,该电池效率随聚光比的增大先增后减,适合在小于20倍聚光比下的系统中工作。可进一步优化该电池金属栅线覆盖率和阻值引起的功率损失以提高其适合应用的聚光比。
文摘为把直接液浸冷却方式应用于采用密排III-V族电池组件的高倍聚光光伏系统,分析了适用于浸没冷却高倍聚光下III-V族聚光三结电池候选液体的种类、液膜厚度对Ga In P/Ga In As/Ge聚光三结电池电性能的影响,探索了该电池在液浸条件下电性能变化的机理.结果表明:不同液体液膜厚度对聚光三结电池短路电流的影响远大于对其开路电压的影响;随着浸没液体厚度的不断增加,聚光三结电池的效率呈现先升高后降低的趋势,在4.0 mm液厚时效率达到最大,其中化妆级白油在此厚度浸没下电池效率可提升8.99%.机理分析表明:薄液膜的存在降低了聚光三结电池表面的菲涅尔反射的光学效应和液体分子的吸附降低了电池表面复合速率的电学效应是引起电池效率提升的主要原因.
