Correlation of structure and intrinsic luminescence of freshly introduced dislocations in GaN revealed by SEM and TEM

O. S. Medvedev, O. F. Vyvenko, E. V. Ubyivovk, S. V. Shapenkov, M. Seibt

Research output

Abstract

Dislocation structure and cathodoluminescence (CL) of locally plastically deformed n-GaN is investigated in transmission electron microscope (TEM) and in scanning electron microscope (SEM). Multiple dense indentations of the samples with subsequent TEM foil preparation enables to study the same dislocation-rich region of the specimen with both TEM and CL-SEM and to establish direct correlation between the types of dislocations and their luminescent properties. It is shown that only straight segments of a-screw dislocations possess intrinsic luminescent band at 3.12 eV at room temperature confirming previous conclusion made from independent SEM and TEM results.

Original languageEnglish
Title of host publicationInternational Conference on State-of-the-Art Trends of Scientific Research of Artificial and Natural Nanoobjects, STRANN 2018
EditorsYuri Petrov, Oleg Vyvenko
PublisherAmerican Institute of Physics
ISBN (Electronic)9780735417922
DOIs
Publication statusPublished - 2019
EventInternational Conference on State-of-the-Art Trends of Scientific Research of Artificial and Natural Nanoobjects, STRANN 2018 - Moscow
Duration: 17 Oct 201819 Oct 2018

Publication series

NameAIP Conference Proceedings
Volume2064

Conference

ConferenceInternational Conference on State-of-the-Art Trends of Scientific Research of Artificial and Natural Nanoobjects, STRANN 2018
CountryRussian Federation
CityMoscow
Period17/10/1819/10/18

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Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Medvedev, O. S., Vyvenko, O. F., Ubyivovk, E. V., Shapenkov, S. V., & Seibt, M. (2019). Correlation of structure and intrinsic luminescence of freshly introduced dislocations in GaN revealed by SEM and TEM. In Y. Petrov, & O. Vyvenko (Eds.), International Conference on State-of-the-Art Trends of Scientific Research of Artificial and Natural Nanoobjects, STRANN 2018 [040003] (AIP Conference Proceedings; Vol. 2064). American Institute of Physics. https://doi.org/10.1063/1.5087682