Study On High Efficiency Lignt Trapping Schemes And Thermals Characteristics Of Crystalline Silicon Solar Cells

With the continuous development of social economy and the increasing population,the human society is facing an increasingly serious energy situation.Therefore,the exploitation and utilization of renewable and clean energy such as solar energy to solve the problem of increasing shortage of fossil energy has attracted more and more attention from countries around the world.At present,the development of photovoltaic industry is very rapid.Although there are many forms of solar cells on the market,crystalline silicon solar cells are still in the leading position in practical solar cells.In the field of crystalline silicon solar cells,how to further improve the photoelectric conversion efficiency and control the stability of it has been a research hotspot,but there are still a large number of scientific and technical problems on how to make the efficiency of crystalline silicon solar cells closer to the limit of theoretical efficiency and ensure it remain stable under complex environmental conditions.This paper focuses on two basic problems in the production of crystalline silicon solar cells.First,we optimize the light trapping schemes to improve the photoelectric conversion efficiency of the cells;then discuss how the parameters affecting the thermal characteristics of the cells,for further improve the working stability of the cells.The research shows that designing high-efficiency light trapping schemes is not only a means to make the efficiency of crystalline silicon solar cells close to the theoretical efficiency limit,but also a key technology for the raw material cost of the cells.In the working process of crystalline silicon solar cells,the characteristics of temperature distribution directly affect the working stability of the cells components and power plants,so research the characteristics of temperature distribution can help accurately predict the output power of cells components and power plants under different environmental conditions.This paper first summarizes the development history of crystalline silicon solar cells,the main problems faced by light-trapping schemes,and the research status of thermal properties.Then based on the frequency domain finite difference method,we designed a new high-efficiency light trapping schemes based on microlens concentrating and two-cavities light-trapping,and optimized its light-trapping effect.Finally,in the study of the thermalcharacteristics of crystalline silicon solar cells,in order to clearly investigate how the temperature field distribution and output characteristics of the cells are affected by the ambient temperature,we introduce the boundary layer of the cell surface to study the changes in the output parameters and temperature field characteristics of the cells under different environmental conditions.when the output parameters of the light source meet the standard test conditions,we use finite difference method to analyze the temperature drift,temperature distribution and its influence on the output parameters of the crystal silicon solar cells by combining the different actual test conditions of the cells.At the end of the article,the content of this paper and the future research progress are summarized and forecasted.