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Why is caesium used frequently in photo voltaic cell but not lithium?

Why is caesium used frequently in photo voltaic cell but not lithium?

Grade:12th pass

1 Answers

Vikas TU
14149 Points
7 years ago
Caesium being in large size and has outemost sheels and orbitals as bulkier are easy too emit the electrons when comes under the UV radiations or any phtoelectric effect. Li being very small however used less than Cs as the enrgy reuired is more as due to the electrons embedded into it within deep.

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