Electronic Structure in Semiconductor Nanocrystals: Optical Experiment *

One of the primary motivations for studying nanometer-scale semiconductor crystallites, or nanocrystals, is to understand what happens when a semiconductor becomes small

David J. Norris

2020

Scholarcy highlights

  • One of the primary motivations for studying nanometer-scale semiconductor crystallites, or nanocrystals, is to understand what happens when a semiconductor becomes small
  • To review recent progress in utilizing optical spectroscopy to understand this size dependence, this chapter begins with a discussion of the basic theoretical concepts necessary to understand electronic structure in nanocrystals
  • It describes the experimental data from the prototypical direct gap semiconductor system, cadmium selenide
  • The chapter explains the origin of this phenomenon and discusses recent work that moves beyond cadmium selenide
  • It outlines some of the remaining issues in the electronic structure of nanocrystals
  • The second complication is that, unlike the diamond structure, the hexagonal cadmium selenide lattice does not have inversion symmetry

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