AI Article Synopsis
- This paper introduces a theory focused on size quantization and optical transitions in bilayer semiconductor quantum wells with asymmetric profiles.
- It finds that the subbands in these bilayer structures have nonparabolic shapes and effective masses that vary based on the electron's wave number and subband number.
- The study also derives a formula for the probability of optical transitions, which has implications for advancing laser technologies and photodetectors using specific semiconductor materials.
Article Abstract
This paper presents a theory of size quantization and intersubband optical transitions in bilayer semiconductor quantum wells with asymmetric profile. We show that, in contrast to single-layer quantum wells, the size-quantized subbands of bilayer quantum wells are nonparabolic and characterized by effective masses that depend on the electron wave number and the subband number. It is found that the effective masses are related to the localization of the electron wave function in the layers of the quantum well and can be controlled by varying the chemical composition or geometric parameters of the structure. We also derive an analytical expression for the probability of optical transitions between the subbands of the bilayer quantum well. Our results are useful for the development of laser systems and photodetectors based on colloidal nanoplates and epitaxial layers of semiconductor materials with heterojunctions.
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| http://dx.doi.org/10.1364/OE.384227 | DOI Listing |
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