an pn jjunction diode that produces light instead of heat is
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Answer: Light emitting diode
P-n junction diode is formed when the semiconductor is doped with two types of impurities.
- trivalent impurity
- tetravalent impurity
When current is allowed to flow through the device electron-hole pair recombine to release a photon of energy.
When the energy is emitted in form of light, it is known as light emitting diode.
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