Property And Characterization Of Adhesives In Silver Paste Of Solar Cell

Abstract:As the conventional energy resources dries up and the deterioration of environment, people pay more attention to solar energy, which is a clean and renewable energy.This thesis is was carried out based on binding phase for low-temperature sintered silver-based paste and low-temperature curable silver-based paste. what’s more, it’s in pursuit of product quality and economic benefits. Large amounts of conclusion and experimental datas provide an important reference basis or technology.First, we summarize the tough industry status and the importance of developing solar energy resourcesin China. Moreover, we summarize something like structure and working principle, advantages and disadvantages of crystalline silicon solar cells and hetero-junction with intrinsic thin-layer solar cells respectively. Finally we illustrate application value and content of this research.Second, analysis of the experimental design principles is advantageous to the experiment, which focus on preparation technology of glass frits in front silver paste of solar cell. Moreover, we illustrate a variety of analytical methods and characterization methods.Third, for Pb-Si-B-Al-Bi glass, the optimum composition proportion is65wt.%PbO-17wt.%SiO2-4wt.%B2O3-6wt.%Al2O3-7wt.%Bi2O3through analysing the results on SEM, DSC and detection of electrical properties.Fouth, by using single factor method and orthogonal experimental design, the effect of various milling parameters such as milling time, water:powder weight ratio, ball:powder weight ratio, grinding ball gradation and milling rotational speed on the particle size and morphology of glass frit was investigated.Fifth, for low-temperature sintered silver-based paste, technological parameters definition provides a good guidance significance for the paste application. The curing reaction of different content of curing agent (5,10,15,20,25and30wt.%) in different heating rate was studied by non-isothermal differential scanning calorimetry(DSC). The best curing process of E-44/QNP1system was110℃+20min. Moreover, the resulted low-temperature sintered silver-based paste has a dense structure and excellent electrical performance.