N-type crystalline silicon and P-type crystalline silicon

(1) N-type crystalline silicon When crystalline silicon is doped with a small amount of impurity group V elements (such as P), its 5 valence electrons form 4 covalent bonds with silicon…

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Energy bands and intrinsic semiconductor silicon vs. extrinsic semiconductor silicon

1. Band structure of crystalline silicon The energy bands of a crystal reflect the interactions between the various atoms in the crystal, especially the outer electrons. One energy level of…

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Basic physical and chemical properties of crystalline silicon

The electrical properties of siliconSilicon is a typical semiconductor material, and its resistivity is about 10-4~1010Ω·cm. The conductivity and conductivity type are related to the impurities in the silicon crystal.…

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Structure of crystalline silicon solar cell

Solar cells are semiconductor optoelectronic devices that directly convert solar radiant energy into electrical energy. As early as 1939, the French physicist Alexander-Edmond Becquerel discovered the photovoltaic effect. The so-called…

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Solar photovoltaic system classification

Solar photovoltaic systems have different forms in different applications. Generally, solar photovoltaic systems can be divided into independent photovoltaic systems and grid-connected photovoltaic systems. Independent photovoltaic systemIndependent photovoltaic system refers…

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Controllers, converters, loads in solar photovoltaic systems

ControllerThe main function of the controller in the photovoltaic power generation system is to control the charging/discharging of the battery according to the characteristics of the battery, so as to…

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Solar cell square array and storage battery in solar photovoltaic system

The characteristic of solar power technology is that solar energy is an inexhaustible renewable energy source, and the initial energy cost is extremely low; the power of solar photovoltaic power…

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The distribution of solar energy resources in China and the characteristics of solar energy

China is one of the countries rich in solar energy resources. More than 2/3 of the country’s total area has an annual sunshine time of more than 2000h, and an…

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The relationship between the sun and the earth

Solar energyThe sun is a hot gas planet composed mainly of hydrogen and helium, with a diameter of about 1.392×106km and a distance of about 1.496×108km from the earth. The…

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