photodiodes
TRANSCRIPT
PhotodiodesDept. of Computer Science & EngineeringFaculty of EngineeringUniversity of Development Alternative (UODA)
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Sharmin Akther LipiID: 011143015
Shemanto Chandraw RoyID: 011143016
Batch: 37 Sem: 05
Participants
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ContentsWhat is PhotodiodeHistory & TheoryFeatures of photodiodeMaterialsTypesPhotodiode ConstructionVI characteristics of photo diodeApplicationsAdvantages & DisadvantagesReference
What is Photodiode ?
Aphotodiodeis a semiconductor device that converts lightsintocurrent.
Photodiode technology developed since 1940sPhotodiode technology was refined in the 1950sSilicon has been the favoured material for photodiodes, germanium can also be used, and its use was first demonstrated in 1962 by Riesz.
History & Theory
Excellent linearity with respect to incident lightLow noiseWide spectral responseMechanically ruggedCompact and lightweightLong life
Features of photodiode
Materials commonly used to produce photodiodes include:
Materials
Types:
PIN photodiodePN photodiodeAvalanche photodiode
Types
Photodiode Construction
CROSS SECTION OF THE SILICON PHOTODIODE
VI characteristics of photo diode
Photo diodes are used as photo detectors.Photo diodes are used in cameras as photo sensors, Slotted optical switch, in scintillators e.t.c.Photo diodes are used in consumer electronics.
Applications
Advantages:Photodiode detector are high NIR sensitivity and high speed.Low noiseLow dark current
Disadvantages:Normal PN junction photo diodes have very high response times.It has very low sensitivity
Advantages & Disadvantages
Referencehttp://en.wikipedia.org/wiki/Photodiodehttp://hyperphysics.phy-astr.gsu.edu/hbase/electronic/photdet.htmlhttp://www.optics.arizona.edu/palmer/OPTI400/SuppDocs/pd_char.pdfhttp://www.radio-electronics.com/info/data/semicond/photo_diode/photo_diode.phphttp://www.wisegeek.com/what-is-a-photodiode.htmlhttp://www.google.com.ph/url?sa=t&rct=j&q=photodiode+threshold+voltage&source=web&cd=7&cad=rja&ved=0CFMQFjAG&url=http%3A%2F%2Fwww.ee.ryerson.ca%2F~courses%2Fee8114%2FPres5-receivers.ppt&ei=Cug6UIIZ4YOZBfrCgYgI&usg=AFQjCNHjrFUHtAoXIV5zAzEIJ_nRdFrf_Qhttp://wiki.answers.com/Q/What_is_the_disadvantage_and_advantage_of_photo_diode_and_transistor
Thank you all &Special thanks to our honorable teacherFarzana Rahman MishuSr. lecturerDept. of Computer Science & EngineeringFaculty of Engineering
Created by Mohammad Ali KhanDept. Computer Science & EngineeringFaculty of EngineeringUniversity of Development Alternative (UODA)