Function of quantum-confinement effect in the AlGaNAlNGaN heterostructure with an AlN interfacial layer

Y. C. Kong, R. M. Chu, Y. D. Zheng, C. H. Zhou, S. L. Gu, R. Zhang, P. Han, Y. Shi, R. L. Jiang

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

This is a theoretical study of the distribution of two-dimensional electron gas (2DEG) in an AlGaNAlNGaN heterostructure. It is shown that the addition of an AlN interfacial layer leads to a slight increase of 2DEG density. The role of quantum-confinement effect in the change of 2DEG distribution with an inserted AlN interfacial layer is revealed by comparing calculated 2DEG distributions in an AlGaN (AlN) GaN heterostructure with and without considering the quantum-confinement effect. In the classic model, insertion of an AlN interfacial layer has a negligible effect on the 2DEG distribution. While taking the quantum effect into account, we can clearly see that incorporation of an AlN interfacial layer results in a substantial influence of 2DEG distribution, with the electron spillover into barrier layer reduced from 1.35× 1012 to 0.23× 1012 cm-2, which are 9.8% and 1.5%, respectively, of the total 2DEG sheet density.

Original languageEnglish (US)
Pages (from-to)873-876
Number of pages4
JournalJournal of Vacuum Science and Technology B: Microelectronics and Nanometer Structures
Volume25
Issue number3
DOIs
StatePublished - 2007

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Function of quantum-confinement effect in the AlGaNAlNGaN heterostructure with an AlN interfacial layer'. Together they form a unique fingerprint.

Cite this