The polycrystalline cell output mainly varies with intensity, which thereby makes it useful for outdoor usages such as in deserts. At low wavelengths, it shows variation with a change in frequency, which thereby makes it useful for times such as dawn and dusk when there is bluish light. Since its production of power is much greater, it is highly suitable for larger scale productions of energy. The monocrystalline cell has an output that is greater than the amorphous cell, but not high enough to account for its expensive cost. It is applicable on a smaller scale, such as in processor chips read more..