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- W4283331337 abstract "Abstract The chapter aims at introducing students to the basic of electronic wavefunctions and energy bands in semiconductors. The Bloch mode is the key point, with the band edges and the bandgap. The Fermi-Dirac statistics based on the Fermi level is introduced to account for the population with the help of the relevant density-of-states. Doping is explained. The optical transitions, their rule and their dynamics are outlined. The focus is then more on heterojunctions, notably double heterojunctions and quantum wells, circumventing the textbook description of space charges, as they are suppressed in injected devices. Quantum wells are discussed in relation with laser diodes anr their threshold current, showing why the separate confinement heterostructure (SCH) combining a guide with quantum wells, stands as an early nanophotonic device design. The confinement factor of the optical mode relates this chapter to that on guided modes. Silicon and III-V semiconductors are contrasted throughout." @default.
- W4283331337 created "2022-06-24" @default.
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- W4283331337 date "2022-04-12" @default.
- W4283331337 modified "2023-09-27" @default.
- W4283331337 title "Semiconductors and quantum wells" @default.
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- W4283331337 doi "https://doi.org/10.1093/oso/9780198786139.003.0008" @default.
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