Band Discontinuities: A Simple Electrochemical Approach

Kow-Ming Chang*

*此作品的通信作者

研究成果: Article同行評審

2 引文 斯高帕斯(Scopus)

摘要

A new, simple but general analytic description of the band discontinuities at a semiconductor heterojunction is derived from the fundamental electrochemical principle. We include the effects of nonuniform band structure and carrier degeneracy (Fermi-Dirac statistics), dielectric image forces, quantum-mechanical exchange-correlation forces, and dipole forces across the interface. These nonideal effects (band model parameters) are expressed in terms of the activity coefficients (thermodynamic parameters) of the carriers. Furthermore, we find a simple but general correlation between the energy band discontinuities and the activity coefficients of the carriers. Such a mathematical link between the two quantities shows that the thermodynamic parameters are important to the physics that determines the band discontinuities.

原文English
頁(從 - 到)883-887
頁數5
期刊IEEE Transactions on Electron Devices
37
發行號4
DOIs
出版狀態Published - 四月 1990

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