InAs quantum dots embedded into anti-modulation-doped GaAs superlattice structures

Домашня сторінка
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Фізико-технічні та математичні науки
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Відділення фізики і астрономії
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Semiconductor Physics Quantum Electronics & Optoelectronics
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Semiconductor Physics Quantum Electronics & Optoelectronics, 2000, том 3
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Semicond. Physics Quantum Electronics & Optoelectronics, 2000, № 1
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InAs quantum dots embedded into anti-modulation-doped GaAs superlattice structures

Masselink, W.T. ; Kissel, H. ; Mueller, U. ; Walther, C. ; Mazur, Yu.I. ; Tarasov, G.G. ; Lisitsa, M.P. ; Lavoric, S.R. ; Zhuchenko, Z.Ya.

Інший ID: PACS: 78.55.Cr,78.20.Ls,73.40.Kp

URI: http://dspace.nbuv.gov.ua/handle/123456789/120508

Посилання: InAs quantum dots embedded into anti-modulation-doped GaAs superlattice structures / W.T. Masselink, H. Kissel, U. Mueller, C. Walther, Yu.I. Mazur, G.G. Tarasov, M.P. Lisitsa, S.R. Lavoric, Z.Ya. Zhuchenko // Semiconductor Physics Quantum Electronics & Optoelectronics. — 2000. — Т. 3, № 1. — С. 121-125. — Бібліогр.: 15 назв. — англ.

Підтримка: This work is supported by NATO linkage grant.

Дата: 2000

Завантажень: 388

InAs quantum dots embedded into anti-modulation-doped GaAs superlattice structures

Анотація:

Photoluminescence (PL) spectra of anti-modulation-doped GaAs superlattice structures containing thin InAs films of about 1-2.5 monolayers grown on semi-insulating (001)-oriented GaAs substrates at different temperatures are studied. The size distribution of InAs quantum dots (QD's) is found to be bimodal at the higher substrate growth temperature (TG = 505 °C) and is transformed into multimodal for the decreased growth temperature (TG = 420 °C) and growth interruption applied. For the first time we demonstrate the strong coupling between modes, which stabilizes the PL magnitude and the full width at half maximum of large index QD modes within a certain temperature interval (50-150 K) due to feeding of the radiative transitions from non-radiative decay and carrier transfer arising from decaying excitonic states of the low index QD mode.

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