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Optical properties of GaInNAs/GaAs quantum well structures
Göteborg University.
Göteborg University.ORCID iD: 0000-0001-6235-7038
Chalmers University of Technology.
Chalmers University of Technology.
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2007 (English)In: Thin Solid Films, ISSN 0040-6090, E-ISSN 1879-2731, Vol. 515, no 10, 4423-4426 p.Article in journal (Refereed) Published
Abstract [en]

The radiative recombination in GaInNAs/GaAs quantum well structures was investigated by low temperature optical spectroscopy. In the temperature region, below 100 K, we found that the observed transition energies strongly depend on the excitation intensity and the temperature, which is indicative of carrier localization. The degree of carrier localization depends on the In-concentration but is not significantly influenced by the N-concentration when the N-concentration exceeds 1.6%. Photoluminescence studies indicate that the degree of the carrier localization decreases with increasing In-concentration at a constant N-concentration. In addition, the experimental results show that carrier localization is strongly correlated to deep level emission. Through post-growth thermal treatment at 650 °C both carrier localization and deep level emission can be eliminated.

Place, publisher, year, edition, pages
2007. Vol. 515, no 10, 4423-4426 p.
National Category
Engineering and Technology
URN: urn:nbn:se:liu:diva-43094DOI: 10.1016/j.tsf.2006.07.115Local ID: 71522OAI: diva2:263952
Available from: 2009-10-10 Created: 2009-10-10 Last updated: 2014-01-15

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Zhao, QingxiangWillander, Magnus
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