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Title: Band structures and optical properties of InGaNAs quantum wells
Authors: Ng, Say Tyam
Keywords: DRNTU::Engineering::Electrical and electronic engineering::Optics, optoelectronics, photonics
Issue Date: 2007
Source: Ng, S. T. (2007). Band structures and optical properties of InGaNAs quantum wells. Doctoral thesis, Nanyang Technological University, Singapore.
Abstract: This thesis presents theoretical studies of electronic band structures and optical properties for compressively strained InGaAsN/GaAs quantum well (QW). We have used a realistic 10-band k.p model for the detailed calculation of band structures and have even studied the QW structure with tensile GaAs/GaAsP/GaAs compounded barrier. Strained conduction band offset ratio (Qc) of InGaAsN/GaAs was proposed. Together with band gap energy (EG) and electron effective mass (m*) based on band-anticrossing (BAC) model, we are able to predict quantum well transition energies that is reasonably close to the reported experimental values. Model-dependent prediction of transition energy (Eeh) and energy separation of conduction subbands were also conducted using additional 8-band and 6-band k.p models, which neglect nitrogen related energy level (EN) and conduction-valence band interaction, respectively.
DOI: 10.32657/10356/3436
Rights: Nanyang Technological University
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Theses

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