CAREER POINT UNIVERSITY kota sub:- EEL

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cgmarts@ee12
CAREER POINT
UNIVERSITY
Submitted to:
Mr. Ravindra Meena
Submitted by:
Ravi shankar(k12256)
Rakesh(K12576)
Rashi(k12589)
Btech
Prepare the simulation modal of photo diode and verify I-V characterstics

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CONTENT
• Theory
• Component used
• Cuircut
• Result

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• Photodiode technology developments came out of the basic
developments of the PN junction diode that started in the
1940s in earnest. Applications for the use of the PN junction
diode were found outside the basic use of rectifying signals.
• Photodiode technology was refined in the 1950s and in the
latter part of that decade the PIN photodiode was developed.
Light absorption in the wide depletion area of the PIN
structure was first investigated in a paper published in 1959
by Gartner. Although silicon has been the favoured material
for photodiodes, germanium can also be used, and its use
was first demonstrated in 1962 by Riesz.
HISTORY & THEORY

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MATERIALS
STRUCTURE

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CHARACTERISTICS
Photodiodes are similar to
regular semiconductor diodes except that they
may be either exposed (to detect vacuum
UV or X-rays) or packaged with a window
or optical fiber connection to allow light to reach
the sensitive part of the device. Many diodes
designed for use specifically as a photodiode
use a PIN junction rather than a p-n junction, to
increase the speed of response.

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CHARACTERISTICS

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SIGNIFICANCE
• In most cases, the photodiode is used to deliver a trigger
signal to an electrical device when it is either exposed to a
UV ray or X-ray. It may also be used to deliver the same
trigger signal when the light source is either turned off or
the photodiode is blocked from the light source.
• A function that a photodiode can perform is to keep an
electrical device operating through the process of converting
light into a power signal or voltage.
• Photovoltaic mode and photoconductive mode are naturally
occurring reactions to the light source create what is referred
to as a photocurrent.

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• P-N photodiodes are not used to measure
extremely low light intensities. Instead, if high
sensitivity is needed, avalanche
photodiodes, intensified charge-coupled
devices or photomultiplier tubes are used for
applications such
as astronomy, spectroscopy, night vision
equipment and laser rangefinding.
APPLICATIONS

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Archives

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T
BreakDown Voltage:
For small active area devices, by definition
breakdown voltage is defined as the voltage at
which the dark current becomes 10 A. Since
dark current increases with temperature,
therefore, breakdown voltage decreases
similarly with increase in temperature.
R I V
I
A
S

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Thank you
cgm@ee12
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