Abstract
AbstractWe review on optical studies of exciton‐electron interaction in modulation doped quantum wells (QWs) based on ZnSe and CdTe semiconductor compounds. The optical properties of QWs containing diluted two‐dimensional electron gases (2DEGs) are well described in terms of charged excitons (trions). Their parameters such as oscillator strength, binding energy, and fine structure are considered in details. In case of moderate densities of 2DEGs, when the Fermi energy falls between the trion and exciton binding energies, the optical properties can be understood in terms of combined exciton‐electron excitations. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
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