| Excitons in quantum—dot quantum—well nanoparticles |
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| 引用本文： | 史俊杰.Excitons in quantum—dot quantum—well nanoparticles[J].中国物理 B,2002,11(12):1286-1293. |
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| 作者姓名： | 史俊杰 |
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| 作者单位： | State Key Laboratory for Mesoscopic Physics and School of Physics, Peking University, Beijing 100871, China |
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| 摘 要： | A variational calculation is presented for the ground-state properties of excitons confined in spherical core-shell quantum-dot quantum-well (QDQW) nanoparticles. The relationship between the exciton states and structure parameters of QDQW nanoparticles is investigated, in which both the heavy-hole and the light-hole exciton states are considered. The results show that the confinement energies of the electron and hole states and the exciton binding energies depend sensitively on the well width and core radius of the QDQW structure. A detailed comparison between the heavy-hole and light-hole exciton states is given. Excellent agreement is found between experimental results and our calculated 1se－1sh transition energies.
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| 关 键 词： | 量子阱 量子斑点 纳米粒子 |
| 收稿时间： | 2002-06-12 |
Excitons in quantum-dot quantum-well nanoparticles |
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| Shi Jun-Jie.Excitons in quantum-dot quantum-well nanoparticles[J].Chinese Physics B,2002,11(12):1286-1293. |
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| Authors: | Shi Jun-Jie |
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| Institution: | State Key Laboratory for Mesoscopic Physics and School of Physics, Peking University, Beijing 100871, China |
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| Abstract: | A variational calculation is presented for the ground-state properties of excitons confined in spherical core-shell quantum-dot quantum-well (QDQW) nanoparticles. The relationship between the exciton states and structure parameters of QDQW nanoparticles is investigated, in which both the heavy-hole and the light-hole exciton states are considered. The results show that the confinement energies of the electron and hole states and the exciton binding energies depend sensitively on the well width and core radius of the QDQW structure. A detailed comparison between the heavy-hole and light-hole exciton states is given. Excellent agreement is found between experimental results and our calculated 1se－1sh transition energies. |
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| Keywords: | excitons quantum-dot quantum-well nanoparticle |
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