A solar cell, also known as "solar chip" or "photovoltaic cell", is an optoelectronic semiconductor sheet that uses sunlight to generate electricity directly. Single solar cells cannot be used directly as a power source. As a power source, several single solar cells must be connected in series, connected in parallel and tightly packaged into components.
A solar panel (also called a solar cell module) is an assembly of multiple solar cells assembled, which is the core part of the solar power generation system and the most important part of the solar power generation system.
Classification
Monocrystalline silicon solar panel
The photoelectric conversion efficiency of monocrystalline silicon solar panels is about 15%, and the highest is 24%, which is the highest photoelectric conversion efficiency of all types of solar panels, but the production cost is so high that it cannot be widely used in large quantities. used. Since monocrystalline silicon is generally encapsulated by tempered glass and waterproof resin, it is strong and durable, and its service life is generally up to 15 years, up to 25 years.
Polycrystalline Silicon Solar Panel
The production process of polycrystalline silicon solar panels is similar to that of monocrystalline silicon solar panels, but the photoelectric conversion efficiency of polycrystalline silicon solar panels is much lower, and the photoelectric conversion efficiency is about 12% (on July 1, 2004, the efficiency of Sharp's listing in Japan was 14.8%). of the world's highest efficiency polycrystalline silicon solar panels). In terms of production cost, it is cheaper than monocrystalline silicon solar panels, the material is simple to manufacture, power consumption is saved, and the total production cost is lower, so it has been greatly developed. In addition, the service life of polycrystalline silicon solar panels is also shorter than that of monocrystalline silicon solar panels. In terms of cost performance, monocrystalline silicon solar panels are slightly better.
Amorphous Silicon Solar Panel
Amorphous silicon solar panel is a new type of thin-film solar panel that appeared in 1976. It is completely different from the production method of monocrystalline silicon and polycrystalline silicon solar panels. The process is greatly simplified, the consumption of silicon materials is very small, and the power consumption is lower. The main advantage is that it can generate electricity even in low light conditions. However, the main problem of amorphous silicon solar panels is that the photoelectric conversion efficiency is low, the international advanced level is about 10%, and it is not stable enough. With the extension of time, its conversion efficiency declines.
Multi-compound solar panel
Multi-compound solar panels refer to solar panels that are not made of single-element semiconductor materials. There are many varieties of research in various countries, most of which have not been industrialized, mainly including the following:
a) Cadmium sulfide solar panels
b) GaAs solar panel
c) Copper indium selenide solar panel
Post time: Dec-30-2022