Electronic Properties of Semiconductor Interfaces
By: by Winfried Mönch
Contributors: SpringerLink (Online service)
Series: Springer Series in Surface Sciences -- 43
Published: 2004
Language: eng
Format: [electronic resource] /
Number of pages: 264
ISBN-13: 9783662069455
Subjects: Materials science; Thin Films Surfaces and Interfaces; Surfaces (Physics); Characterization and Evaluation of Materials; Optical and Electronic Materials; Optical materials; Engineering; Engineering, general; Electronics; Instrumentation Electronics and Microelectronics
Description: Almost all semiconductor devices contain metal-semiconductor, insulator-semiconductor, insulator-metal and/or semiconductor-semiconductor interfaces; and their electronic properties determine the device characteristics. This is the first monograph that treats the electronic properties of all different types of semiconductor interfaces. Using the continuum of interface–induced gap states (IFIGS) as the unifying concept, Mönch explains the band-structure lineup at all types of semiconductor interfaces. These intrinsic IFIGS are the wave-function tails of electron states, which overlap a semiconductor band-gap exactly at the interface, so they originate from the quantum-mechanical tunnel effect. He shows that a more chemical view relates the IFIGS to the partial ionic character of the covalent interface-bonds and that the charge transfer across the interface may be modeled by generalizing Pauling’s electronegativity concept. The IFIGS-and-electronegativity theory is used to quantitatively explain the barrier heights and band offsets of well-characterized Schottky contacts and semiconductor heterostructures, respectively.
Table of contents: title: 1. Introduction; title: 2. Depletion Layer; title: 3. Determination of Barrier Heights and Offsets; title: 4. Laterally Inhomogeneous Schottky Contacts; title: 5. The IFIGS-and-Electronegativity Theory; title: 6. The MIGS-and-Electronegativity Concept: Experiment and Theory; title: 7. First-Principles Calculations of Barrier Heights and Valence-Band Offsets; title: 8. Temperature and Pressure Effects; title: 9. Barrier Heights and Extrinsic Interface Defects; title: 10. Extrinsic Interface Dipoles; title: 11. Ohmic Contacts; title: References.