Nonpolar InGaN/GaN core–shell single nanowire lasers

Li, Changyi; Wright, Jeremy Benjamin; Liu, Sheng; Lu, Ping; Figiel, Jeffrey J.; Leung, Benjamin; Chow, Weng W.; Brener, Igal; Koleske, Daniel D.; Luk, Ting -Shan; Feezell, Daniel F.; Brueck, S. R. J.; Wang, George T.

doi:10.1021/acs.nanolett.6b04483

Title: Nonpolar InGaN/GaN core–shell single nanowire lasers

Journal Article · Tue Jan 24 00:00:00 EST 2017 · Nano Letters

DOI:https://doi.org/10.1021/acs.nanolett.6b04483· OSTI ID:1369452

Li, Changyi ^[1]; Wright, Jeremy Benjamin ^[2]; Liu, Sheng ^[2]; Lu, Ping ^[2]; Figiel, Jeffrey J. ^[2]; Leung, Benjamin ^[2]; Chow, Weng W. ^[2]; Brener, Igal ^[2]; Koleske, Daniel D. ^[2]; Luk, Ting -Shan ^[2]; Feezell, Daniel F. ^[1]; Brueck, S. R. J. ^[1];

^[2]

Univ. of New Mexico, Albuquerque, NM (United States)
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

We report lasing from nonpolar p-i-n InGaN/GaN multi-quantum well core–shell single-nanowire lasers by optical pumping at room temperature. The nanowire lasers were fabricated using a hybrid approach consisting of a top-down two-step etch process followed by a bottom-up regrowth process, enabling precise geometrical control and high material gain and optical confinement. The modal gain spectra and the gain curves of the core–shell nanowire lasers were measured using micro-photoluminescence and analyzed using the Hakki-Paoli method. Significantly lower lasing thresholds due to high optical gain were measured compared to previously reported semipolar InGaN/GaN core–shell nanowires, despite significantly shorter cavity lengths and reduced active region volume. Mode simulations show that due to the core–shell architecture, annular-shaped modes have higher optical confinement than solid transverse modes. Furthermore, the results show the viability of this p-i-n nonpolar core–shell nanowire architecture, previously investigated for next-generation light-emitting diodes, as low-threshold, coherent UV–visible nanoscale light emitters, and open a route toward monolithic, integrable, electrically injected single-nanowire lasers operating at room temperature.

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Research Organization:: Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Energy Frontier Research Centers (EFRC) (United States). EFRC for Solid State Lighting Science (SSLS)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: AC04-94AL85000

OSTI ID:: 1369452

Report Number(s):: SAND-2017-1645J; 654144

Journal Information:: Nano Letters, Vol. 17, Issue 2; ISSN 1530-6984

Publisher:: American Chemical SocietyCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 101 works

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