The document discusses semiconductor materials. It describes intrinsic and extrinsic semiconductors, where intrinsic semiconductors have their own charge carriers while extrinsic semiconductors have additional impurities that introduce excess charge carriers. Extrinsic semiconductors can be n-type or p-type depending on the impurity used - n-type semiconductors have an excess of electrons introduced by donor impurities while p-type have an excess of holes introduced by acceptor impurities. The document also discusses the properties of elemental and compound semiconductors.
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Computer Science and Engineering
SRI RAMAKRISHNA ENGINEERING COLLEGE
[Educational Service: SNR Sons Charitable Trust]
[Autonomous Institution, Accredited by NAAC with ‘A’ Grade]
[Approved by AICTE and Permanently Affiliated to Anna University, Chennai]
[ISO 9001:2015 Certified and all eligible programmes Accredited by NBA]
Vattamalaipalayam, N.G.G.O. Colony Post, Coimbatore – 641 022.
Course Instructor
Mrs.R.Vasanthapriya AP / Physics No. of Credits: 4
Department of Physics
20BS201 - PHYSICAL SCIENCES
PHYSICS
2.
3. Courses Offered by Physics to various BE/B.Tech Programmes
Semester I – Theory Courses
Course Code Course Title Programme
20PH201 Engineering Physics Mechanical
20PH202 Waves and Optics Aeronautical
20PH203 Physics Civil
20PH204 Applied Sciences I RA
20PH205 Applied Physics ECE, EEE and EIE
20PH206 Biophysics BME
20BS201 Physical Sciences CSE, IT, AI & DS
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4. 20BS201 – PHYSICAL SCIENCES 4 0 0 4
COURSE OUTCOMES
CO1: Summarize the properties of
semiconductors and magnetic materials.
CO2: Illustrate the working of various light
emitting devices, optical fibers and photo
detectors with their applications.
CO3: Apply the principles of laser to various
optical devices used for memory storage.
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Computer Science and Engineering
SEMICONDUCTING MATERIALS 4
Elemental and compound semiconductors - Intrinsic and extrinsic
semiconductors –Properties
MAGNETIC MATERIALS 6
Definition of fundamental terms – Material – Classification –
Dia, Para, Ferro and ferri magnetic materials – Properties –
Heisenberg and Domain theory of ferromagnetism – Hysteresis –
Hard and soft magnetic materials – Ferrites – structure,
preparation and applications
PHOTONICS 6
Lasers: Applications - Computer peripherals - Fiber Optics:
Applications – Fiber optical communication – Fiber optic sensors
- Electromagnetic radiation Polarization – Production and
Detection of Plane, Circular and elliptically polarised light
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Computer Science and Engineering
SOURCES AND DETECTORS 6
Light Emitting Diode – Organic LED’s – Polymer light emitting
materials – Plasma light emitting devices – LCD’s –
Semiconductor Diode – PIN and Avalanche Photodetector.
MAGNETIC AND OPTICAL STORAGE TECHNIQUES 8
Magnetic Memories – Optical Data Storage – Phase Change
Recording – Magneto – Optical Data Storage – Hi-Tech involved
in System Development – Capacity of Storing Devices –
Holographic Storage – Construction and Reconstruction of a
Hologram – Photorefractive Storage - Bubble memory – DVD -
Blue-ray disc – Flash memory.
Total Hours : 45
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Computer Science and Engineering
TEXT BOOKS
1. Gaur R K and Gupta S L, “Engineering Physics”, Dhanpat Rai Publications, 2018.
2. Avadhanalu M N, and Kshirsagar P G, “A Textbook of Engineering Physics”, S. Chand &
Company Ltd, 2018.
REFERENCES
1. Charles Kittel, “Solid State Physics”, John Wiley and Sons, 8thEdition, 2012.
2. Raghavan V, “Materials Science and Engineering – A first Course”, PHI Private
limited, 6th Edition, 2015.
WEB REFERENCES
1. https://nptel.ac.in/courses/104104085/
2. http://nptel.ac.in/courses/122107035/
3. http://nptel.ac.in/courses/112104026/
4. http://nptel.ac.in/courses/115107095/
5. https://nptel.ac.in/courses/113105025/
6.https://nptel.ac.in/content/storage2/courses/113104005/lecture_pdf/module6.pdf
8. SEMICONDUCTING MATERIALS 4
Elemental and compound semiconductors -
Intrinsic and extrinsic semiconductors –Properties
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49. Figure 3—5
Direct and indirect electron transitions in semiconductors: (a) direct transition with accompanying
photon emission; (b) indirect transition via a defect level.
Direct semiconductors are suitable for making light-emitting devices, whereas the indirect semiconductors are not.
- A semiconductor is indirect if the maximum
of the valence band and the minimum of the
conduction band do not have the same k value
- A semiconductor is direct if the
maximum of the valence band and
the minimum of the conduction
band do have the same k value
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