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The solar cell can be simplified as a large-area PN junction composed of silicon material, which is formed by directly combining a layer of P-type crystalline silicon and a layer of N-type crystalline silicon. In actual operation, the PN junction of a crystalline silicon solar cell is formed by the diffusion of N-type dopant atoms […]
In an isolated atom, the electrons outside the nucleus are arranged in a certain shell, and each shell contains a certain number of electrons. The electrons on each shell have discrete energy values, that is, the electrons are distributed according to energy levels. For the sake of brevity, on the graph showing the level of […]
Basic knowledge of semiconductorsAccording to the electrical conductivity of objects, natural substances can be divided into three categories: conductors, insulators and semiconductors. Generally, substances with a resistivity of less than 10-4Ω. cm are called conductors, and mainly metal materials such as gold, silver, copper, iron, etc. are good conductors. Substances with a resistivity greater than […]