NDLI: Studies of In and N composition effects on the optical properties and surface morphology of GaInNAs quantum dots grown by rf-plasma assisted MBE

Content Provider	IEEE Xplore Digital Library
Author	Yew, K.C. Yoon, S.F. Sun, Z.Z. Ng, T.K. Loke, W.K. Wang, S.Z. Fan, W.J.
Copyright Year	2002
Description	Author affiliation: Sch. of Electr. & Electron. Eng., Nanyang Technol. Universio, Singapore, Singapore (Yew, K.C.; Yoon, S.F.; Sun, Z.Z.; Ng, T.K.; Loke, W.K.; Wang, S.Z.; Fan, W.J.)
Abstract	Self-assembled GaInNAs quantum dots (QD) were fabricated on GaAs [001] substrate by solid source molecular beam epitaxy (SSMBE) equipped with a RF nitrogen plasma source. The surface morphology was investigated using atomic-force microscopy (AFM), and the photoluminescence (PL) of the QDs was measured at low temperature (5 K). Through these measurements, the effect of indium and nitrogen compositions on the island density, island size, and optical properties were studied. The experiment was carried out with indium and nitrogen composition ranges of 30%-70% and 0.4%-0.8%, respectively. Using high indium composition, an island density of 1/spl times/1/sup 01/1/cm/sup 2/ was obtained in a single layer of GaInNAs QDs. The AFM results showed that the island size of the QDs is in the range of 20-40 nm with an average height of 5-16 nm and the highest island density of 1/spl times/10/sup 11//cm/sup 2/ has been achieved. Low temperature (5 K) photoluminescence (PL) wavelength of 1.10 /spl mu/m to 1.54 /spl mu/m was detected from these samples.
Sponsorship	IEEE Electron Devices Soc. IEEE Lasers & Electro-Opt. Soc
Starting Page	577
Ending Page	580
File Size	303059
Page Count	4
File Format	PDF
ISBN	0780373200
ISSN	10928669
DOI	10.1109/ICIPRM.2002.1014494
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-05-12
Publisher Place	Sweden
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Surface morphology Quantum dots Atom optics Nitrogen Atomic measurements Indium Optical surface waves Molecular beam epitaxial growth Optical microscopy Photoluminescence
Content Type	Text
Resource Type	Article

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