![Give reason for the following:The band gap of the semiconductor used for fabrication of visible LEDs must at least be 1.8eV. Give reason for the following:The band gap of the semiconductor used for fabrication of visible LEDs must at least be 1.8eV.](https://www.vedantu.com/question-sets/037df029-5819-482c-8b98-77a113b81a371033808637476736424.png)
Give reason for the following:The band gap of the semiconductor used for fabrication of visible LEDs must at least be 1.8eV.
![Molecular Expressions Microscopy Primer: Physics of Light and Color - Introduction to Light Emitting Diodes Molecular Expressions Microscopy Primer: Physics of Light and Color - Introduction to Light Emitting Diodes](https://micro.magnet.fsu.edu/primer/lightandcolor/images/ledintrofigure4.jpg)
Molecular Expressions Microscopy Primer: Physics of Light and Color - Introduction to Light Emitting Diodes
![Molecular Expressions Microscopy Primer: Physics of Light and Color - Introduction to Light Emitting Diodes Molecular Expressions Microscopy Primer: Physics of Light and Color - Introduction to Light Emitting Diodes](https://micro.magnet.fsu.edu/primer/lightandcolor/images/ledintrofigure3.jpg)
Molecular Expressions Microscopy Primer: Physics of Light and Color - Introduction to Light Emitting Diodes
![Band gap, explained by RP Photonics Encyclopedia; dielectrics, semiconductors, metals, energy, electronic levels, band gap wavelength, absorption, emission, fluorescence Band gap, explained by RP Photonics Encyclopedia; dielectrics, semiconductors, metals, energy, electronic levels, band gap wavelength, absorption, emission, fluorescence](https://www.rp-photonics.com/img/indirect_bandgap.png)
Band gap, explained by RP Photonics Encyclopedia; dielectrics, semiconductors, metals, energy, electronic levels, band gap wavelength, absorption, emission, fluorescence
![a) A schematic of the LED device structure. (b) Band diagram of the... | Download Scientific Diagram a) A schematic of the LED device structure. (b) Band diagram of the... | Download Scientific Diagram](https://www.researchgate.net/publication/323296111/figure/fig1/AS:596285631504385@1519176981998/a-A-schematic-of-the-LED-device-structure-b-Band-diagram-of-the-entire-LED-structure.png)