Question

Examples of optoelectronic devices are:
(This question has multiple correct options)
A) Light Emitting Diodes (LED)
B) Zener diode
C) Solar cells
D) photodiodes

Answer 1

Hint: The study and the application of the electronic devices that interact with the light are called Optoelectronics.

Complete answer:
Optoelectronic devices are the devices that can operate on both the light and the electrical currents.
 It is a branch of physics that mainly deals with the interactions between light and the electric fields. These devices are electrical to optical or electrical to optical transducers.
The major optoelectronic devices are:
1. Light Emitting diodes – used for display, lighting, communication, remote control, etc
2. Laser Diodes – used for data storage, telecommunication
3. Photodiodes – used for telecommunication
4. Solar cells – used for energy conversion
The major developments of optoelectronic devices are:
1. They have a longer wavelength.
2. They are easily fabricated materials.
3. They are of low cost.
4. They have high optoelectronic conversion efficiency.
5. These are Nanoscale devices.
6. They have high power light sources.
Thus the examples of optoelectronic devices are Light Emitting Diode (LED), Solar Cells, and Photodiodes. It is because all these are junction diodes, which conduct whenever a light is an incident on them.

Hence the correct options are A, C, and, D.

Note: 1. A photodiode functions as a photodetector. It is used to detect optical signals.
2. Solar cells are the direct conversion of sunlight to electricity. There will not be any release of Greenhouse effect gases. There will not be any transmission losses.
3. Light Emitting Diodes are directional light sources.
4. Optoelectronic junction devices are the p-n junction devices in which the carriers are generated by the photons.