The largest new energy vehicle, the world's largest single-area solar roof, and the most concentrated semiconductor lighting technology... At the Shanghai World Expo, a number of high-tech industrialization achievements were demonstrated and applied, and the “low-carbon Expo†was deeply rooted in the hearts of the people. Polycrystalline silicon solar panels are a common type of Solar Panel whose main function is to convert sunlight into electricity. The following are the main functions of polycrystalline silicon solar panels: polycrystalline silicon solar panels, poly crystalline solar panel, polycrystalline pv solar panel, polycrystalline pv module, polycrystalline solar module Ningbo Autrends International Trade Co., Ltd. , https://www.aitsolarpanels.com
At the World Expo special press conference held yesterday, Zhou Minhao, deputy director of the Shanghai Economic and Information Technology Commission, introduced that the Expo site implemented demonstration applications such as solar energy, new energy vehicles, smart grids, and LED lighting projects. Solar power generation facilities with a total installed capacity of more than 4.68 MW are installed on the roofs and glass curtain walls of the China Pavilion, Theme Pavilion, Expo Center, Performing Arts Center, etc., which can reduce carbon dioxide emissions by 4,000 tons per year. It is the largest solar photovoltaic cell demonstration area in China. . More than 1,400 new energy vehicles are demonstrating operation inside and outside the Expo Park. Pure electric buses, super-capacitor buses and fuel-cell vehicles form a green traffic phalanx, achieving zero emissions of public transportation in the Expo site.
Semiconductor lighting LEDs were used in venues such as the China Pavilion, the Expo Axis, the Performing Arts Center and the Urban Best Practices Area. This is the first time that LED lighting has been used in large scale in Chinese urban neighborhoods. More than 2 million LEDs and more than 90,000 sets of various types of full-color lamps and lanterns have been used on the one-kilometer Expo Axis, fully embodying the concept of low-carbon Expo and Green Expo. At present, 1.03 billion LED chips are used in the Expo site; about 80% of the indoor lighting sources in the Expo site use LED green light sources, which is about 90% less than ordinary incandescent lamps.
According to reports, Shanghai's new energy industry has made positive progress. In 2009, the scale of the new energy industry reached 25 billion yuan, an increase of 13% over 2008. Nuclear power has received orders of 20 billion yuan, with a market share of 40%; solar photovoltaic output reached 400 megawatts, an increase of more than 40%. 
Photoelectric conversion: Polycrystalline silicon solar panels are made of polycrystalline silicon material, and their surface is covered with multiple silicon crystals, which can absorb photons in sunlight. When the photons are absorbed, they release electrons from the silicon crystal, creating an electric current. This process, called photoelectric conversion, converts the energy of sunlight into electricity.
Power generation: The current and voltage generated by polycrystalline silicon solar panels through photoelectric conversion can be used for power generation. Multiple solar panels are combined into a solar module, and a solar array can be formed when used on a large scale. These battery modules and arrays can absorb large amounts of sunlight and convert it into electricity to supply the grid or be used to power equipment.
Renewable energy: Solar panels use sunlight to generate electricity and are therefore renewable energy. Sunlight is free, widely distributed, and not exhausted, so the use of solar panels helps reduce dependence on traditional energy sources, lowers carbon emissions, and is environmentally friendly.
Noiseless: Solar panels have no mechanical moving parts, so there is no noise during the power generation process. This makes them ideal for use in residential areas, schools, and other places where a quiet environment is required.