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Tuning Photoluminescence Energy and Fine Structure Splitting in Single Quantum Dots by Uniaxial Stress |
| DOU Xiu-Ming;SUN Bao-Quan;WANG Bao-Rui;MA Shan-Shan;ZHOU Rong;HUANG She-Song;NI Hai-Qiao;NIU Zhi-Chuan |
| SKLSM, Institute of Semiconductors, Chinese Academy of Sciences, PO Box912, Beijing 100083 |
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| Cite this article: |
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DOU Xiu-Ming, SUN Bao-Quan, WANG Bao-Rui et al 2008 Chin. Phys. Lett. 25 1120-1123 |
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Abstract We report a photoluminescence (PL) energy red-shift of single quantum dots (QDs) by applying an in-plane compressive uniaxial stress along the [110] direction at a liquid nitrogen temperature. Uniaxial stress has an effect not only on the confinement potential in the growth direction which results in the PL shift, but also on the cylindrical symmetry of QDs which can be reflected by the change of the full width at half maximum of PL peak. This implies that uniaxial stress has an important role in tuning PL energy and fine structure splitting of QDs.
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| Keywords:
78.67.Hc
71.45.Gm
73.21.La
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Received: 21 December 2007
Published: 27 February 2008
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| PACS: |
78.67.Hc
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(Quantum dots)
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71.45.Gm
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(Exchange, correlation, dielectric and magnetic response functions, plasmons)
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73.21.La
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(Quantum dots)
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