McqMate
Q. |
is used when the optical emission results from the application of electric field. |
A. | radiation |
B. | efficiency |
C. | electro-luminescence |
D. | magnetron oscillator |
Answer» C. electro-luminescence | |
Explanation: electro-luminescence is encouraged by selecting an appropriate semiconductor material. direct band-gap semiconductors are used for this purpose. in band-to-band recombination, the energy is released with the creation of photon. this emission of light is known as electroluminescence. |
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