Atomic Structure of Luminescent Centers in High-Efficiency Ce-doped w-AlN Single Crystal
10.1038/srep03778
Crossref journal-article
Springer Science and Business Media LLC
Scientific Reports (297)
Abstract

AbstractRare-earth doped wurtzite-type aluminum nitride (w-AlN) has great potential for high-efficiency electroluminescent applications over a wide wavelength range. However, because of their large atomic size, it has been difficult to stably dope individual rare-earth atoms into the w-AlN host lattice. Here we use a reactive flux method under high pressure and high temperature to obtain cerium (Ce) doped w-AlN single crystals with pink-colored luminescence. In order to elucidate the atomic structure of the luminescent centers, we directly observe individual Ce dopants in w-AlN using annular dark-field scanning transmission electron microscopy. We find that Ce is incorporated as single, isolated atoms inside the w-AlN lattice occupying Al substitutional sites. This new synthesis method represents a new alternative strategy for doping size-mismatched functional atoms into wide band-gap materials.

Bibliography

Ishikawa, R., Lupini, A. R., Oba, F., Findlay, S. D., Shibata, N., Taniguchi, T., Watanabe, K., Hayashi, H., Sakai, T., Tanaka, I., Ikuhara, Y., & Pennycook, S. J. (2014). Atomic Structure of Luminescent Centers in High-Efficiency Ce-doped w-AlN Single Crystal. Scientific Reports, 4(1).

Authors 12
  1. Ryo Ishikawa (first)
  2. Andrew R. Lupini (additional)
  3. Fumiyasu Oba (additional)
  4. Scott D. Findlay (additional)
  5. Naoya Shibata (additional)
  6. Takashi Taniguchi (additional)
  7. Kenji Watanabe (additional)
  8. Hiroyuki Hayashi (additional)
  9. Toshifumi Sakai (additional)
  10. Isao Tanaka (additional)
  11. Yuichi Ikuhara (additional)
  12. Stephen J. Pennycook (additional)
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Dates
Type When
Created 11 years, 7 months ago (Jan. 21, 2014, 5:09 a.m.)
Deposited 2 years, 7 months ago (Jan. 6, 2023, 3:19 a.m.)
Indexed 1 year, 3 months ago (May 13, 2024, 11:09 a.m.)
Issued 11 years, 7 months ago (Jan. 21, 2014)
Published 11 years, 7 months ago (Jan. 21, 2014)
Published Online 11 years, 7 months ago (Jan. 21, 2014)
Funders 0

None

@article{Ishikawa_2014, title={Atomic Structure of Luminescent Centers in High-Efficiency Ce-doped w-AlN Single Crystal}, volume={4}, ISSN={2045-2322}, url={http://dx.doi.org/10.1038/srep03778}, DOI={10.1038/srep03778}, number={1}, journal={Scientific Reports}, publisher={Springer Science and Business Media LLC}, author={Ishikawa, Ryo and Lupini, Andrew R. and Oba, Fumiyasu and Findlay, Scott D. and Shibata, Naoya and Taniguchi, Takashi and Watanabe, Kenji and Hayashi, Hiroyuki and Sakai, Toshifumi and Tanaka, Isao and Ikuhara, Yuichi and Pennycook, Stephen J.}, year={2014}, month=jan }