Photoluminescence excitation measurements on erbium implanted GaN

J. T. Torvik, R. J. Feuerstein, C. H. Qiu, J. I. Pankove, Fereydoon Namavar

Research output: Contribution to journalArticle

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Abstract

The temperature dependence of the optical excitation cross section of Er implanted n-type GaN was studied using photoluminescence excitation spectroscopy. Due to the large 3.4 eV band gap of GaN, it was possible to probe two Er absorption lines using a tunable Ti:sapphire laser in the 770-1010 nm range. Photoluminescence excitation spectra exhibiting several Stark splittings revealed a complex dependence upon temperature. The largest excitation cross section in the third excited state was 1.65 × 10-20 cm2 at an excitation wavelength of 809.4 nm when measured at 77 K. This value is roughly three times larger than the cross section in the second excited state at 4.8 × 10-21 cm2 when pumping at 983.0 nm. The Er-related photoluminescence was reduced between 1.5 and 4.8 times when going from 77 K to room temperature, except when pumping around 998 nm. At this excitation wavelength the room temperature photoluminescence was stronger by a factor of 1.26 compared to that at 77 K.

Original languageEnglish (US)
Pages (from-to)1824-1827
Number of pages4
JournalJournal of Applied Physics
Volume82
Issue number4
DOIs
StatePublished - Aug 15 1997

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erbium
photoluminescence
excitation
cross sections
pumping
temperature dependence
room temperature
wavelengths
sapphire
probes
spectroscopy
lasers

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Torvik, J. T., Feuerstein, R. J., Qiu, C. H., Pankove, J. I., & Namavar, F. (1997). Photoluminescence excitation measurements on erbium implanted GaN. Journal of Applied Physics, 82(4), 1824-1827. https://doi.org/10.1063/1.365985

Photoluminescence excitation measurements on erbium implanted GaN. / Torvik, J. T.; Feuerstein, R. J.; Qiu, C. H.; Pankove, J. I.; Namavar, Fereydoon.

In: Journal of Applied Physics, Vol. 82, No. 4, 15.08.1997, p. 1824-1827.

Research output: Contribution to journalArticle

Torvik, JT, Feuerstein, RJ, Qiu, CH, Pankove, JI & Namavar, F 1997, 'Photoluminescence excitation measurements on erbium implanted GaN', Journal of Applied Physics, vol. 82, no. 4, pp. 1824-1827. https://doi.org/10.1063/1.365985
Torvik JT, Feuerstein RJ, Qiu CH, Pankove JI, Namavar F. Photoluminescence excitation measurements on erbium implanted GaN. Journal of Applied Physics. 1997 Aug 15;82(4):1824-1827. https://doi.org/10.1063/1.365985
Torvik, J. T. ; Feuerstein, R. J. ; Qiu, C. H. ; Pankove, J. I. ; Namavar, Fereydoon. / Photoluminescence excitation measurements on erbium implanted GaN. In: Journal of Applied Physics. 1997 ; Vol. 82, No. 4. pp. 1824-1827.
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