Blue-light emission from GaN self-assembled quantum dots due to giant piezoelectric effect

被引：264

作者：

Widmann, F

Simon, J

Daudin, B

Feuillet, G

Rouvière, JL

Pelekanos, NT

Fishman, G

机构：

[1] Univ Grenoble 1, SPMM, CEA Grenoble, Dept Rech Fondamentale Mat Condensee, F-38054 Grenoble 9, France

[2] Univ Grenoble 1, Spectrometrie Phys Lab, CNRS, UMR C5588, F-38402 St Martin Dheres, France

来源：

PHYSICAL REVIEW B | 1998年 / 58卷 / 24期

关键词：

D O I：

10.1103/PhysRevB.58.R15989

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

It is shown that the optical properties of GaN quantum dots with the wurtzite structure result from a balance between confinement and piezoelectric effects. In "large" quantum dots with an average height and diameter of 4.1 and 17 nm, respectively, the photoluminescence peak is centered at 2.95 eV, nearly 0.5 eV below the bulk GaN band gap. We attribute this enormous redshift to a giant 5.5 MV/cm piezoelectric field present in the dots, in agreement with theoretical calculations. [S0163-1829(98)51248-9].

引用

页码：15989 / 15992

页数：4

共 26 条

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