Consider the following statements :A. The jun | vedclass

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(D) Statement $A$ is incorrect because the junction area of a solar cell is made large to collect more light,whereas a photodiode has a small area for

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$B, E$ Only

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(D) Statement $A$ is incorrect because the junction area of a solar cell is made large to collect more light,whereas a photodiode has a small area for fast response.Statement $B$ is correct because a solar cell operates in the photovoltaic mode without any external bias.Statement $C$ is incorrect because an $	ext{LED}$ is made of a heavily doped $p-n$ junction to facilitate efficient carrier injection.Statement $D$ is incorrect because the light intensity of an $	ext{LED}$ increases with forward current only up to a certain limit,after which it saturates.Statement $E$ is correct because an $	ext{LED}$ emits light only when it is forward-biased,which causes the recombination of electrons and holes at the junction.Therefore,statements $B$ and $E$ are correct.

Similar Questions

For detecting light intensity,we use:

What type of $p-n$ junction diode does not require forward bias to operate?

Identify the incorrect statement.

Assertion: $A$ $p-n$ junction with reverse bias can be used as a photo-diode to measure light intensity.
Reason: In a reverse bias condition,the current is small but is more sensitive to changes in incident light intensity.

What are the ideal materials for the fabrication of a solar cell? Give the criteria for their selection.

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