The Development and Application of the Solar Lights in Wuhan City, China

Traditional illumination lights are energy- consumption and not economical in the long term. While the solar lights are safe, easy to maintenance, independent of conventional energy, no pollution to environment. With the cost of the solar cells decreasing, the solar lights have been applied widely. Meanwhile photovoltaics are one of the fastest growing solar energy technologies. Photovoltaic devices, commonly called solar cells or modules, use semiconductor material to directly convert sunlight into electricity. In this paper, firstly the development of solar light in Wuhan city is introduced. A comprehensive analysis on the principle and the structure of the solar light is conducted, and the mathematical model of solar cells is proposed. Through tests on the solar cells, the I-V and P- V characteristic curves are obtained which verify the theoretical curves.