Chapter 1
Diodes and Applications
Lecturer: Dr. Tran Vu Hoang
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Electronics and Semiconductor Materials: An Introduction to Diodes and Their Applications, High school final essays of Physics
A chapter from a university course on electronics, focusing on diodes and their applications. The lecture covers the basics of electronics, the concept of circuits, semiconductor materials, and diodes. The document also discusses the differences between electrical and electronic engineering, and introduces ideal diodes, semiconductor materials, and their properties.
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Chapter 1
Diodes and Applications
Lecturer: Dr. Tran Vu Hoang
Outline
Ø Tuning-in Activities Ø Definitions Ø Ideal Diode Ø Semiconductor Materials Ø Diodes and Applications Ø Special Purpose Diodes
Outline
Ø Tuning-in Activities Ø Definitions Ø Ideal Diode Ø Semiconductor Materials Ø Diodes and Applications Ø Special Purpose Diodes
What is Electronics?
q The branch of science and technology q Deal with the motion of electrons in various systems or devices q Include active electrical components: diodes, transistors, rectifiers …
Electronic Devices
Electronic Engineering
q Control q Information processing q Signal processing q Telecommunication q Switching q Analog – Digital q Microprocessors q Microcontrollers q Application specific integrated circuit (ASIC) q Digital signal processing(DSP) q Field programmable gate array (FPGA)
Electronic vs Electrical Engineering
Electronic q Semiconductor (usually silicon) q low intensity currents q conduction is finely controlled q small scale electronic systems: computers, integrated circuit Electrical q Conductor (Metals and alloys) q powerful currents q conduction is not as finely controlled q large scale electrical systems: power transmission, motor control …
Outline
Ø Tuning-in Activities Ø Definitions Ø Ideal Diode Ø Semiconductor Materials Ø Diodes and Applications Ø Special Purpose Diodes
Outline
Ø Tuning-in Activities Ø Definitions Ø Ideal Diode Ø Semiconductor Materials Ø Diodes and Applications Ø Special Purpose Diodes
Semiconductor Materials
Semiconductor Materials
q Insulator q have very high resistances q have very few or no “free electrons” floating about within their basic atom structure q the electrons are stuck to the parent atom and can not move around freely
Semiconductor Materials
q Semiconductor q have electrical properties somewhere in the middle, between those of a “conductor” and an “insulator” q have very few “free electrons” q electrons are still able to flow under special conditions q it is possible to control its conductivity by controlling the amount of impurities added to the intrinsic semiconductor material
Semiconductor Materials
q Ge and Si have received the broadest range of interest in the development of semiconductor devices q can be manufactured to a very high purity level q their characteristics can be changed significantly through the application of heat or light
Semiconductor Materials
q Ge and Si have received the broadest range of interest in the development of semiconductor devices