Thin film solar power generation is a thin film solar cell technology.
Thin-film solar cells can be manufactured using glass, plastic, ceramic, graphite, metal foil and other low-cost materials as substrates. The thickness of the thin layer that can generate voltage is only a few. μm, so that it can receive light at the same time. Compared with silicon wafer solar cells, the amount of raw materials used can be greatly reduced (the thickness can be more than 90% lower than that of silicon wafer solar cells at present). , the highest conversion efficiency in the laboratory has reached more than 20%, and the maximum stable efficiency in large-scale mass production is about 13%. In addition to being flat, thin film solar cells can also be transformeds into non-planar structures due to their flexibility. They have a wide range of applications and can be combined with or as part of buildings in the manufacturing of thin film solar cells. cells, they can Various deposition technologies are used to grow p-type or n-type materials layer by layer. Common thin film solar cells include amorphous silicon, CuInSe2 (CIS), CuInGaSe2 (CIGS) and CdTe, etc.
Module structure
Thin-film solar modules are composed of glass substrates, metal layers, transparent conductive layers, electrical function boxes, adhesive materials, semiconductor layers, etc.
Product application
Translucent solar cell module: building integrated solar (BIPV) application
Application of thin film solar energy: power supply foldable load portable, military, travel
Applications of thin film solar modules: roofing, building integration, remote power supply, national defense
Thickness comparison
Crystalline silicon (180~250μm), single junction amorphous silicon film (600nm), laminated amorphous silicon film (400nm~500nm).
Features
1. Low power loss under the same shielding area (good power generation in low light conditions)
2. Power loss under the same lighting Less. than wafer solar cells
3. Best power temperature coefficient
4. Better light transmission
5. Higher cumulative power generation quantity
6. Only a small amount of silicon raw material is required
7. There is no internal short circuit problem (the connection was integrated during the manufacture of the battery in series)
8.than wafer solar cells
9. No worries about material supply
10 Can be integrated into building materials (BIPV)
Solar cells are classified by structure. There are several categories
Whether it is crystalline silicon modules or thin-film battery modules, they can now achieve commercial mass production. But for the market, there are still many manufacturers of crystalline silicon components.
Crystalline silicon modules have higher conversion efficiency than thin film modules, and there is almost no cost gap now, so it is better to choose crystalline silicon modules. crystalline silicon.
Crystalline silicon components are divided into polycrystalline silicon components and monocrystalline silicon components. The conversion efficiency of silicon modules is lower, but the cost is higher.also weak. If the installed capacity of the grid-connected photovoltaic system is large, polycrystalline silicon modules should always be considered, as the economic benefits are better.
When choosing crystalline silicon components, be sure to choose a manufacturer with quality assurance and choose your preferred manufacturer in terms of product quality and after-sales service.
The core part of solar cell power generation can be divided into single junction, double junction and triple junction structures, that is, single layer, double layer and triple layer which absorb different spectra. are superimposed, so as to utilize each layer of a sunbeam more completely, making energy production more efficient. This structure only appears in thin-film solar cell technology. Monocrystalline silicon and siliconm polycrystalline have only one silicon wafer. Purity and quality affect the efficiency of energy production. In addition, thin-film solar cells and crystalline silicon solar cells require glass panels and bottom plates for packaging. Zhongyi Xingye thin film solar cells can also be packaged using stainless steel film substrates and flexible materials, so they are also divided into glass hard plates. and flexible and foldable structures.