What is the difference between single crystal and polycrystalline solar cells?

The main differences between polycrystalline solar cells, that is, polycrystalline silicon solar cells, and monocrystalline silicon solar cells are as follows:

First, the characteristics are different

1, polycrystalline silicon solar cells: polycrystalline silicon solar cells have the characteristics of high conversion efficiency and long life of monocrystalline silicon cells, and the material preparation process of amorphous silicon thin film cells is relatively simplified.

2, monocrystalline silicon solar cells: monocrystalline silicon sheet fleece technology is an effective means to reduce light loss and improve battery efficiency; Monocrystalline silicon solar cells use monocrystalline silicon rods with a purity of up to 99.999% as raw materials, which also increases the cost and is difficult to use on a large scale.

Second, different applications

1, polysilicon solar cells: the combination of solar power generation and building materials, so that the future of large buildings to achieve self-sufficiency in electricity, is a major future development direction; Used in garden lamp, street lamp, hand lamp, camping lamp, hiking lamp, fishing lamp, black light, rubber cutting lamp, energy-saving lamp and so on.

2, monocrystalline silicon solar cells: used in the field of transportation; Communication, communication field; Petroleum, Marine and meteorological fields; Home lighting power supply; Photovoltaic power station; Solar buildings; Satellites, spacecraft, space solar power plants, etc.

Three, different costs

In terms of production cost, polysilicon solar cells are cheaper than monocrystalline silicon solar cells, materials are simple to manufacture, save power consumption, and the total production cost is low, so it has been developed in large numbers. In addition, the service life of polycrystalline silicon solar cells is shorter than that of monocrystalline silicon solar cells.