Pn junction diode baising and its vi characteristics. Pn junction theory for semiconductor diodes basic electronics. This is the basic construction of the pn junction diode. Basic transport processes of a pn junction diode and transistor were.
He semiconductor pn junction forms the basis of all devices being used in. The pn junction solidstate device theory electronics. Lec01 rrb je basic electronics introduction vikash sir adda247 technical 1 p. Numerical analysis of semiconductor pn junctions using matlabtm. The behaviour of the pn junction with regards to the potential barriers width produces an asymmetrical conducting two terminal device, better known as the pn junction diode.
Diode allows current to pass in only one direction. Semiconductor theory questions and answers pdf free download mcqs interview objective type questions for eee ece electronics students semiconductor theory. An analysis of pn junctions in piezoelectric semiconductors. Pdf numerical analysis of semiconductor pn junctions. A diode is a 2 lead semiconductor that acts as a one way gate to electron flow. It is the most fundamental device element that forms the basis of many electronic devices such as pn diodes, optoelectronic devices like lightemitting diode and photodetector, field. Review of basic semiconductor and pn junction theory mosfet. It is one of the simplest semiconductor devices as it allows current to flow in only one direction. Semiconductors pn junction theory interview questions and answers pdf free download. Introduction to electronics and applications youtube. Theory of pn junction diodes theory of pn junction diode. In its basic form a semiconductor diode is formed by making pn junction. A variation of pn junction theory was developed in 2006.
The pn junction diode may get destroyed due to excessive heat if any of these values are exceeded. When the ntype semiconductor and ptype semiconductor materials are first joined together a very large density gradient exists between both sides of the pn junction. A pnjunction is formed when an ntype material is fused together with a ptype material creating a semiconductor diode. A pn junction diode is formed by doping one side of a piece of silicon with a ptype dopant boran and the other side with a ntype dopant phosphorus.
A pn junction diode is one of the simplest semiconductor devices around, and which has the characteristic of passing current in only one direction only. The pn junction is the fundamental building block of the electronic age. I explain what happens when you put together a piece of n and ptype material. Shockley had the basic idea that only those electrons which manage to be. The result is that some of the free electrons from the donor impurity atoms begi.
A forward biased pn junction diode has a resistance of the order of. The pn junction provides satisfactory performance when operated within these limiting values. Review of basic semiconductor and pn junction theory springerlink. Pdf an analysis of pn junctions in piezoelectric semiconductors. Chapter 1 semiconductor pn junction theory and applications. Pn homojunction non linear device rectifier devices composants redresseur 2 devices reach the same results. Read about the pn junction solidstate device theory in our free electronics textbook network sites. Theoretical background semiconductor diode theory is at the very center of. By exploring the electrical properties of silicon, it is possible to acquire an understanding of the inner workings of the pn junction.
735 353 1161 70 620 908 1304 1004 926 551 640 1162 320 407 315 1384 609 906 317 614 1424 396 478 1220 175 533 838 899 793 266 325 1094 914 1072 868 1272 445 96 1049