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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