Which of the following pairs of semiconductor devices and the materials used don't match?

Solar cell :

C u I n S e_{2}

as absorber and

C d S

as collector.

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LED :

G a A s

and

A l G a A s

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Optical fibre : Vitreous high silica glass doped with germanium

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Semiconductor Laser :

N d Y A G

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Solution

The correct option is C Semiconductor Laser : $N d Y A G$
$N d Y A G$ (neodymium-doped yttrium aluminium garnet) is a crystal that is used as a lasing medium for solid-state lasers.

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Similar questions

For transistor action, which of the following statements are correct:

(a) Base, emitter and collector regions should have similar size and doping concentrations.

(b) The base region must be very thin and lightly doped.

(d) Both the emitter junction as well as the collector junction are forward biased.

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