Which type of metals are used in photoelectric cells? Give one
example.
Answers
Answer:
Normally in photoelectric cells metals that have low ionisation enthalpies or metals which can emit more easily are used. One of the most popular metal with such characteristics used in photoelectric cells is Cesium (Cs). It is an alkali metal belonging to group 1.
Caesium (Cesium) is widely and commonly used in photoelectric cells because it can easily convert sunlight into electricity. During its exposure to direct sunlight, the electrons that are there in caesium’s atoms get stimulated and start moving around. Ultimately, this electron flow creates the electric current. Hence, we can say that caesium is the most preferred or ideal catalyst for the photoelectric process.
Also Read:Photoelectric Effect
In addition to caesium, other alkali metals like potassium, rubidium, copper and silicon are also often used as an alternative in solar panels.
Answer:
1. the photoemissive cell
2. the photovoltaic cell
3. the photoconductive cell
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