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Optical Properties of Self-organized PbS Quantum Dot Superlattices |
| YE Chang-Hui1;YAO Lian-Zeng1;MU Ji-Mei1;SHI Gang1;ZHANG Li-De2 |
| 1Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026
2Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031
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| Cite this article: |
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YE Chang-Hui, YAO Lian-Zeng, MU Ji-Mei et al 2000 Chin. Phys. Lett. 17 755-756 |
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Abstract Self-organization of PbS into quantum dot superlattices has been demonstrated for the first time, and hexaplanar colloidal crystals 1-10μm in size made from PbS quantum dots 3-6 nm in diameter are revealed in transmission electron microscope micrographs, and the inner structures of the superlattices can be seen by a high resolution transmission electron microscopy The optical absorption and photoluminescence spectra have been recorded. The ordering of the superlattices is crucial for the understanding of the fundamental properties of quantum-dot arrays, as well as for their optimal utilization in optical and electronic applications.
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| Keywords:
73.61.-r
78.40.Fy
81.05.Dz
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Published: 01 October 2000
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