By B.G. Yacobi
The most target of this e-book is to supply an introductory standpoint of the elemental ideas of semiconductors, being an built-in evaluation of the elemental homes, purposes, and characterization of semiconductors in one quantity. This booklet is acceptable for either undergraduate and graduate scholars, and for researchers, operating in a wide selection of fields in actual and engineering sciences, who require an introductory and concise description of the sector of semiconductors.
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Additional resources for Semiconductor Materials: An Introduction to Basic Principles (Microdevices)
This implies that in the presence of an electric field, electrons at the bottom of the conduction band and holes at the top of the valence band travel in the opposite directions in real space. , valence band) in terms of the motion of holes is of great importance in describing semiconductor properties. The inverse dependence of the effective mass on the E(k) curvature indicates that the greater curvature implies smaller effective mass, and vice versa. , anisotropy), the effective mass may differ in each direction.
5. BRILLOUIN ZONES AND EXAMPLES OF THE ENERGY BAND STRUCTURE 51 and for designing semiconductor devices. , Si and GaAs) are shown in Figs. 14. Close examination of these diagrams reveals some important facts. As expected from the previous sections, there is a forbidden energy region, which is referred to as the energy gap, which separates the conduction band from the valence band. More specifically, the energy gap is defined as the energy separation between the highest valence band maximum and the lowest conduction band minimum.
1. 2. Bound Electron in an Infinitely Deep Potential Well For electrons bound between two infinitely high potential barriers (but free to move inside the well; see Fig. 3. SOME APPLICATIONS OF THE SCHRÖDINGER EQUATION 39 and A and B are constants, which in this specific case can be determined by considering the boundary conditions: Thus, for and can be written as which is satisfied only if kL is an integral multiple of 1, 2, 3, .... , if where n = 0, Therefore, because of the boundary conditions, only certain energy levels are allowed (see Fig.
Semiconductor Materials: An Introduction to Basic Principles (Microdevices) by B.G. Yacobi