Abstract:
:InPBi exhibits broad and strong photoluminescence at room temperature, and is a potential candidate for fabricating super-luminescence diodes applied in optical coherence tomography. In this paper, the strained InPBi quantum dot (QD) embedded in the AlGaAs barrier on a GaAs platform is proposed to enhance the light emission efficiency and further broaden the photoluminescence spectrum. The finite element method is used to calculate the strain distribution, band alignment and confined levels of InPBi QDs. The carrier recombinations between the ground states and the deep levels are systematically investigated. A high Bi content and a flat QD shape are found preferable for fabricating super-luminescence diodes with high efficiency and a broad emission spectrum.
journal_name
Int J Mol Scijournal_title
International journal of molecular sciencesauthors
Zhang L,Song Y,Gong Qdoi
10.3390/ijms20236001subject
Has Abstractpub_date
2019-11-28 00:00:00issue
23issn
1422-0067pii
ijms20236001journal_volume
20pub_type
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