Investigation On Production Technology Of Monocrystalline125Silicon Solar Cell

From the21st century, the aggravation of environmental pollution and the crisisof coal, oil and other traditional energy has become a global hot issues. More andmore countries are committed to the development of renewable energy. Among all thenew energys, solar energy has its advantage be richly endowed by nature: clean,abundant, sustainable development, has become a new driving force for economicdevelopment. According to the prediction of European Photovoltaic IndustryAssociation, the solar photovoltaic power generation will occupy an importantposition of the world’s energy in the near future, not only will replace part ofconventional energy, and will become the main body of the world’s energy supply. It isexpected that, the photovoltaic power generation in the world’s total electricity supplyin the proportion will reach more than10%in2030, this ratio will rise to more than20%in2040, to the end of twenty-first century, will rise to more than60%. Thesefigures are sufficient to show that the development prospects of solar energyphotovoltaic industry and its strategic position in the field of energy. Thus it can beseen, the solar cell market has a broad prospect.This article introduced the materials, shapes and fields of application ofmonocrystalline silicon solar cell, explained its working principle. It made modelanalysis with solar cell, and deduced the formula of some important electricalparameters. Then this article introduced the monocrystalline silicon solar cellmanufacturing process, the solar modular and its encapsulation process.Solar cell manufacturing is the core of the photovoltaic industry. In this paper, theprinciple and process of M125solar cell production: making texture, diffusion,etching, PECVD, screen printing and firing were introduced in detail, and focus on thediffusion and screen printing for the design and optimization of new: enhance thesquare resistance of diffusion, increase the number of fingers, change the bars to“hollow” design. The test result shows that the cells’ efficiency is over18.7%, canehance the efficiency of more than0.17%. It indicates that in the light of the technicalparameters in this paper, we can obtain M125silicon solar cells with goodperformance.