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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.

Chapter 2 Semiconductor Heterostructures 2.1 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 …

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Transcription of Chapter 2 Semiconductor Heterostructures - Cornell …