Growth of sparse arrays of narrow GaN nanorods hosting spectrally stable InGaN quantum disks

Yen Ting Chen, Wen Che Tsai, Wen Yen Chen, Ching Lien Hsiao, Hsu Cheng Hsu, Wen Hao Chang, Tzu Min Hsu, Kuei Hsien Chen, Li Chyong Chen

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

Wafer-scale production of single InGaN quantum disks (QD) ina-nanorod array with small rod diameter (> 9 nm) and low rod-density (< 108 cm 2) has been achieved without extensive processing steps. Excitation power-dependent μPL spectrum of single QD reveals multi-excitonic peak with 0.75 meV blue-shift for 3 orders of magnitude increasing power indicating the present system is spectrally stable and nearly free of quantum-confined Stark effects, due possibly to the strain relaxation induced by free surface of small rod diameters. The fully polarized emissions, a high working temperature (180 K), low rod density and good alignment, render this system promising as a potential quantum photon source.

Original languageEnglish
Pages (from-to)16166-16173
Number of pages8
JournalOptics Express
Volume20
Issue number15
DOIs
Publication statusPublished - 2012 Jul 16

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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