PDF4PRO ⚡AMP

Modern search engine that looking for books and documents around the web

Example: tourism industry

Chapter 2 Semiconductor Heterostructures - Cornell …

Semiconductor Optoelectronics (Farhan Rana, Cornell University) Chapter 2 Semiconductor Heterostructures Introduction Most interesting Semiconductor devices usually have two or more different kinds of semiconductors . In this handout we will consider four different kinds of commonly encountered Heterostructures : a) pn heterojunction diode b) nn heterojunctions c) pp heterojunctions d) Quantum wells, quantum wires, and quantum dots A pn Heterojunction Diode Consider a junction of a p-doped Semiconductor ( Semiconductor 1) with an n-doped Semiconductor ( Semiconductor 2). The two semiconductors are not necessarily the same, 1 could be AlGaAsand 2 could be assume that 1 has a wider band gap than 2.

The valence band offset is then, ... As more electrons and holes diffuse, the strength of the electric field increases until the drift components of the electron and hole currents are exactly equal and opposite to their respective diffusive components. When this has happened the junction is in equilibrium.

Loading..

Tags:

  Chapter, Semiconductors, Electron, Valences, Heterostructure, Chapter 2 semiconductor heterostructures

Information

Domain:

Source:

Link to this page:

Please notify us if you found a problem with this document:

Spam in document Broken preview Other abuse

Transcription of Chapter 2 Semiconductor Heterostructures - Cornell …

Related search queries