Paper Info
Title
Exciton wavefunction coupled surface plasmon resonance for In-rich InGaN film with perforated aluminum cylindrical micropillar arrays
Abstract
The optical characterization of excitons coupled with surface plasmon resonance (SPR) for InGaN/GaN heterostructures with perforated cylindrical micropillar arrays is investigated. We analyze the optical characteristics of excitons coupled with SPR for InGaN/GaN heterostructures with perforated cylindrical micropillars, as shown in measurements of the photoluminescence (PL) spectra over a broad range of temperatures between 20 and 300K. From the temperature-dependent PL spectra, we observe the better SPR coupling effects, resulting in less carrier confinement in the InGaN energy band. The magnitude of the redshift of the emission peak shown by the sample with the coated aluminum (Al) pattern is larger than that shown by the sample with no metal film. This was due to the presence of more exciton coupling surface plasmons within the Al/InGaN interface. The enhancement of the PL intensity of the sample with the deposited Al pattern film can be attributed to a stronger SPR coupling interaction with the excitons. The experimental results indicate that a perforated Al cylindrical micropillar array can significantly affect carrier confinement, enhancing the quantum efficiency of Al/In-rich InGaN heterostructures due to the interaction of the SPR coupling effect between the InGaN quantum dot-like region and the Al film.
Year
DOI
Venue
2010
10.1016/j.microrel.2010.04.018
Microelectronics Reliability
Keywords
Field
DocType
quantum efficiency,quantum dot,surface plasmon resonance,surface plasmon
Quantum efficiency,Surface plasmon,Surface plasmon resonance,Electronic band structure,Exciton,Electronic engineering,Engineering,Heterojunction,Optoelectronics,Quantum dot,Condensed matter physics,Photoluminescence
Journal
Volume
Issue
ISSN
50
8
0026-2714
Citations 
PageRank 
References 
0
0.34
0
Authors
5
Name
Order
Citations
PageRank
Yeu-Jent Hu100.34
Chia-Hui Fang200.34
Jen-Cheng Wang362.83
Hung-Lun Lo400.34
Tzer-En Nee500.68