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Shape effects on the electronic structure and the optical gain of InAsN/GaAs nanostructures : from a quantum lens to a quantum ring

หน่วยงาน Nanyang Technological University, Singapore

รายละเอียด

ชื่อเรื่อง : Shape effects on the electronic structure and the optical gain of InAsN/GaAs nanostructures : from a quantum lens to a quantum ring
นักวิจัย : Chen, Jian , Fan, Weijun , Xu, Q. , Zhang, X. W. , Li, S. S. , Xia, Jian-Bai
คำค้น : DRNTU::Engineering::Electrical and electronic engineering
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2555
อ้างอิง : Chen, J., Fan, W., Xu, Q., Zhang, X. W., Li, S. S., & Xia, J.-B. (2012). Shape effects on the electronic structure and the optical gain of InAsN/GaAs nanostructures : from a quantum lens to a quantum ring. Superlattices and microstructures, 52(4), 618-631. , 0749-6036 , http://hdl.handle.net/10220/10301 , http://dx.doi.org/10.1016/j.spmi.2012.06.018
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : Superlattices and microstructures
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

The electronic structures of self-assembled InAs1−xNx/GaAs nanostructures from quantum lens to quantum rings (QRs) are calculated using the 10-band k.p method and the valence force field (VFF) method. With the variation of shape of the nanostructure and nitrogen (N) content, it shows that the N and the strains can significantly affect the energy levels especially the conduction band because the N resonant state has repulsion interaction with the conduction band due to the band anticrossing (BAC). The structures with N and greater height have smaller transition energy, and the structures with N have greater optical gain due to its overwhelming greater value of factor fc+fv−1fc+fv−1. After analyzing the shape effect, we suggested that the nanostructures with volcano shape are preferred because the maximum optical gain occurs for quantum volcano. With our simulation result, researchers could select quantum dots (QDs) structures to design laser with better performance.

บรรณานุกรม :
Chen, Jian , Fan, Weijun , Xu, Q. , Zhang, X. W. , Li, S. S. , Xia, Jian-Bai . (2555). Shape effects on the electronic structure and the optical gain of InAsN/GaAs nanostructures : from a quantum lens to a quantum ring.
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Chen, Jian , Fan, Weijun , Xu, Q. , Zhang, X. W. , Li, S. S. , Xia, Jian-Bai . 2555. "Shape effects on the electronic structure and the optical gain of InAsN/GaAs nanostructures : from a quantum lens to a quantum ring".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Chen, Jian , Fan, Weijun , Xu, Q. , Zhang, X. W. , Li, S. S. , Xia, Jian-Bai . "Shape effects on the electronic structure and the optical gain of InAsN/GaAs nanostructures : from a quantum lens to a quantum ring."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2555. Print.
Chen, Jian , Fan, Weijun , Xu, Q. , Zhang, X. W. , Li, S. S. , Xia, Jian-Bai . Shape effects on the electronic structure and the optical gain of InAsN/GaAs nanostructures : from a quantum lens to a quantum ring. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2555.