A piezomodulated reflectance study of InAs/GaAs surface quantum dots | Zendy

Yu Chen-Hui | Zendy; Chong Wang | Zendy; Gong Qian | Zendy; Bo Zhang | Zendy; Wei Lu | Zendy

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A piezomodulated reflectance study of InAs/GaAs surface quantum dots

Author(s) -

Yu Chen-Hui,

Chong Wang,

Gong Qian,

Bo Zhang,

Wei Lu

Publication year - 2006

Publication title -

acta physica sinica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.199

H-Index - 47

ISSN - 1000-3290

DOI - 10.7498/aps.55.4934

Subject(s) - materials science , quantum dot , spectral line , layer (electronics) , optoelectronics , substrate (aquarium) , reflectivity , condensed matter physics , optics , nanotechnology , physics , oceanography , astronomy , geology

Piezomodulated reflectance (PzR) spectra have been measured for two samples of InAs surface quantum dots (SQDs) deposited on GaAs (311)B substrates with In0.35Ga0.65As template. At 77K multiple confined-state SQDs transitions can be clearly resolved from the PzR spectra . The detailed optical transition features of SQDs, QDs buried by capping layer, In0.35Ga0.65As template and GaAs substrate layers were obtained from well-fitted PzR spectra using the first or third derivative of a Lorentz line shape. Differences between PzR results of two samples were discussed qualitatively.

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