Flashcards
INTRODUCTION - Basic Semiconductor Components: Diodes (Mod.4 Sect.2 Part 3)
Flashcards do conjunto (23)
- 1_____ is the field of technology the deals with the control of electron flow.Electronics
- 2Electronic _____ are devices that are used to control electron flow.components
- 3Electronic components are grouped together to for electronic _____.circuits
- 4A _____ is a type of semiconductor that's often used in circuits as a rectifier.diode
- 5A _____ changes AC current to DC current.rectifier
- 6A _____ is a material or device that conducts current flow "part-time". That is, sometimes this device acts like a conductor, and sometimes an insulator.semiconductor
- 7The two main types of semiconductors are _____ and _____.diodes, transistors
- 8The most important semiconductor materials used are the elements ____(Ge), ____(Si), and ____(Se), and the compound ____(GaAs).germanium, silicon, selenium, gallium arsenide
- 9The _____ atom is the simplest atom known. It has 1 proton and 1 electron.hydrogen
- 10Atoms that have 8 electrons in their outer shell are called ____ atoms.inert
- 11Examples of inert atoms are argon, helium, neon, krypton, and xenon. These elements are sometimes called ____ gases or ____ gases. Atoms of these elements are very stable and don't combine easily with other atoms.noble, inert
- 12The sharing of electrons between atoms is called __________.covalent bonding
- 13At room temp., a few electrons will always break from their bonds and move for a short time around a semiconductor material. This random motion of electrons is called _____ current, and it can be seen in all semi.c. materials.intrinsic
- 14To make a semi.c. that has certain desired properties, certain atoms of other substances are added to the latticework structure of a crystal as it grows. These added atoms are impurities called _____.dopants
- 15The process of adding dopants to a semiconductor material is called _____.doping
- 16If the dopant added to a material has 5 electrons in its outer shell, it's called a ____. If the dopant has 3 electrons in its outer shell, it's called an _____.donor, acceptor
- 17When donor atoms are added to a pure material, a semiconductor called an _____ material is produced.N-type
- 18When acceptor atoms are added to a pure material, a semiconductor called _____ material is produced.P-type
- 19A _____ is the absence of an electron in an atom.hole
- 20N-type material has excess _____, and P-type material has excess _____.electrons, holes
- 21In N-type semi.c. materials, electrons dominate current flow. So the electrons are called _____-charge carriers.majority
(opposite for P-type) - 22Any holes that appear in an N-type semi.c. material are called _____-charge carriers.minority
(opposite for P-type) - 23The direction of electron flow in a/an _____ material is from negative to positive.P-type