Can a photodiode detect wavelength?
A photodiode is fabricated from a semiconductor with band gap of 2.8 eV. Can it detect a wavelength of 6000 nm? Justify. As, the energy of the photon is less than energy band gap (Eg= 2.8 eV) of the semiconductor, so a wavelength of 6000 nm cannot be detected….Semiconductor Electronics: Materials, Devices and Simple Circuits.
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What is the wavelength range of silicon photodiode detection?
Silicon photodiodes are solid state semiconductor devices, sensitive to light in the wide spectral range of 200 – 1200nm, which extends from deep ultraviolet through the visible to the near infrared.
What is the cutoff wavelength of a photodiode?
The long end of the spectral response of InGaAs photodiodes is limited by the bandgap energy of InGaAs which is 0.75eV at room temperature (corresponding to about 1620nm).
How do I choose a photodiode?
Selecting a photodiode for high-speed applications
- Wavelength. Photodiodes are designed to operate at a specific optical wavelength.
- Architecture. There are two main types of photodiodes.
- Sensitivity. Diode sensitivity will be specified as amps per watt.
- Junction capacitance.
- Leakage current.
- Packaging.
- <>>References.
Can it detect a wavelength of 6000 nm?
As, the energy of the photon is less than energy band gap (Eg= 2.8 eV) of the semiconductor, so a wavelength of 6000 nm cannot be detected.
Which of the following wavelength can be detected with a photodiode having eg 2.5 eV?
A p-n photodiode is fabricated from a semiconductor with a band gap of 2.5 eV. It can detect a signal of wavelength: 4000 nm.
What is IR photodiode?
An IR photodiode is an electrical component that converts light into electricity. An IR photodiode is an electrical component that converts light into electricity. This type of component is specifically designed to respond to light in the infrared range.
How do you calculate the cutoff wavelength?
λc = c/fc = 296 nm is the cutoff wavelength.
What is cut off wavelength in optical fiber?
The cutoff wavelength is the minimum wavelength in which a particular fiber still acts as a single mode fiber. Above the cutoff wavelength, the fiber will only allow the LP01 mode to propagate through the fiber (fiber is a single mode fiber at this wavelength).
What is the difference between solar cell and a photodiode?
The difference between solar cells and photodiodes is what they are designed for. A solar cell converts light energy to electricity, whereas a photodiode only converts light energy into electric charge.