Application of Silicone Materials in Solar Power Generation


1 Preface


Energy is an important material basis for the existence and development of human society. Coal, oil, natural gas and other fossil fuels have always been the main energy consumption structure. Over the years, global warming and rising international crude oil prices have made it clear that human beings must get rid of dependence on fossil fuels. The disaster of nuclear power plants following the recent earthquake and tsunami in Japan has warned human beings of nuclear energy. People have turned to the research and development of renewable energy. Solar energy is a kind of renewable energy. With inexhaustible and clean renewable energy, solar power generation is the most popular energy research topic.


Silicone materials with excellent technological and operational properties have entered the field of solar power generation. With the development of solar energy industry, the technology of solar power generation continues to improve. New requirements are constantly put forward for matching materials. Silicone materials will play a more important role, which is also the silicone industry belt. There are new opportunities for development.


2. Principle, operation mode and system composition of solar power generation


At present, the mature solar power generation technology mainly includes solar photovoltaic power generation technology and solar photothermal power generation technology.


The main advantage of photovoltaic power generation system is that it is easy to build, can effectively use the roof and curtain wall of buildings, without occupying land resources, can be used in situ to generate electricity and reduce power transmission losses. Photovoltaic power generation devices basically do not need operating machinery and equipment, reliable and stable long life, easy installation and maintenance. The scale effect of photothermal power generation is obvious. Photothermal power generation is only suitable for large-scale power plants. It requires higher land area and capital scale. The larger the scale of power plants, the lower the cost per unit of electricity.


2.1 Solar Photovoltaic Power Generation Technology


Photovoltaic power generation is based on the principle of photovoltaic effect. The energy converter of photovoltaic power generation is a solar cell, also known as photovoltaic cell, which is the core of photovoltaic power generation system. Under solar irradiation, the photoelectric conversion chip of solar cell absorbs light energy and generates photoelectron-hole pairs. Under the action of built-in electric field, photogenerated electrons and holes are separated. As a result, the accumulation of heterosexual charges is formed at both ends of the cell, i.e., the photogenerated electromotive force is produced. This phenomenon of voltage generated by light. It's the photovoltaic effect. When the two ends of the built-in electric field of the photovoltaic cell are connected with the lead and the load respectively, the load will flow through the current, thus realizing photovoltaic power generation and work.


Due to the different basic materials and processes for manufacturing solar cells, the structure of solar cells has a variety of styles.


Originality: Jiang Chengyong