Abstract
An extension of the theory of optical emission spectra due to exciton–exciton collisions (in bulk GaAs at non-zero temperatures) for GaAs/AlGaAs quantum well systems has been attempted to understand the physics associated with the optical spectra due to excitonic scattering processes in these novel systems. The four typical processes have been considered to give different spectral shape, peak position, and temperature dependence of the emission spectra. The intensity of emitted light in quantum well systems varies inversely to the square of temperature, whereas in case of bulk materials it simply decreases with the temperature. The results arrived at are purely qualitative in nature.
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Pandey, S.K. The optical emission induced by interacting excitonic states in quantum well systems. Indian J Phys 86, 739–742 (2012). https://doi.org/10.1007/s12648-012-0114-2
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DOI: https://doi.org/10.1007/s12648-012-0114-2
Keywords
- Excitons
- Excitonic states
- Excitonic scattering processes
- Optical emissions
- Quantum wells
- GaAs/AlGaAs
- QW systems