Question

Distinguish between polysilicon and single crystalline silicon

Answer 1

Polycrystalline silicon (or semi-crystalline silicon, polysilicon, poly-Si, or simply "poly") is a material consisting of multiple small silicon crystals. Polycrystalline cells can be recognized by a visible grain, a "metal flake effect". ... Polycrystalline silicon can be as much as 99.9999% pure.

Answer 2

For example, in terms of mechanical properties, optical properties and thermal properties anisotropy, it is less noticeable than single crystal silicon; in terms of electrical properties, polycrystalline silicon crystals have much lower conductivity than single crystal silicon, and even electrical conductivity is very ...