Optical Cavity Based on GaN Planar Nanowires Grown by Selective Area Metal-Organic Vapor Phase Epitaxy

Galia Pozina, Konstantin A. Ivanov, Maxim I. Mitrofanov, Mikhail A. Kaliteevski, Konstantin M. Morozov, Iaroslav V. Levitskii, Gleb V. Voznyuk, Vadim P. Evtikhiev, S. Rodin

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GaN planar nanowires (NWs) are fabricated by selective area metal-organic vapor phase epitaxy using focused ion beam etching of trench pattern in the Si 3 N 4 mask. Two crystallographic orientations of NWs along (Formula presented.) and (Formula presented.) directions are investigated. The coherent growth is confirmed for both directions; however, the best morphology, crystalline and optical properties are found in the GaN planar NWs fabricated along the (Formula presented.) axis. Cathodoluminescence (CL) at 5 K reveals a presence of Fabry–Perot modes in the region of 1.8–2.5 eV for the NWs fabricated in the (Formula presented.) direction. The position and intensity of the Fabry–Perot peaks vary depending on measured point within the NW, which is explained by the model based on the Purcell coefficient calculations. It is shown that small fluctuations in the NW thickness cause a noticeable shift of the Fabry–Perot modes energies, while the enhancement or reduction of the emission intensity for the Fabry–Perot peaks depend on the position of the emitter inside the planar NW.

Original languageEnglish
Article number1800631
JournalPhysica Status Solidi (B) Basic Research
Publication statusPublished - Jan 1 2019



  • Fabry–Perot modes
  • GaN
  • optical cavity
  • planar nanowires
  • Purcell coefficient

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Pozina, G., Ivanov, K. A., Mitrofanov, M. I., Kaliteevski, M. A., Morozov, K. M., Levitskii, I. V., Voznyuk, G. V., Evtikhiev, V. P., & Rodin, S. (2019). Optical Cavity Based on GaN Planar Nanowires Grown by Selective Area Metal-Organic Vapor Phase Epitaxy. Physica Status Solidi (B) Basic Research, [1800631]. https://doi.org/10.1002/pssb.201800631