Internal Resistance: Causes in Cells & Solar Cells

AI Thread Summary
Internal resistance in cells and solar cells arises from different mechanisms. In traditional cells, resistance is primarily due to the electrolyte and the materials used in the electrodes, which can impede ion flow. In contrast, solar cells experience internal resistance related to the semiconductor properties, where the movement of electrons is influenced by quantum mechanics at the junctions of different materials. The conductivity in solar cells is affected by factors such as temperature, light intensity, and material quality. Understanding these differences is crucial for optimizing performance in both types of devices.
Cheman
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What causes internal resistance in the following:

A) A Cell,

B) A Solar Cell?

Is it not just the same thing? Thanks in advance. :smile:
 
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Cheman said:
What causes internal resistance in the following:

A) A Cell,

B) A Solar Cell?

Is it not just the same thing? Thanks in advance. :smile:
I think the difference is that a dry cell battery, being made up of conducting material, whereas a solar cell is a semiconductor. There are free electrons in a conductor. The conductivity of the semiconductor depends on the quantum mechanical behaviour of electrons at the junction of two different semiconductor materials.

AM
 
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