| Ground state of excitons in quantum-dot quantum-well nanoparticles： stochastic variational method |
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| 引用本文： | 张恒,史俊杰. Ground state of excitons in quantum-dot quantum-well nanoparticles： stochastic variational method[J]. 中国物理, 2004, 13(12): 2136-2140. DOI: 10.1088/1009-1963/13/12/028 |
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| 作者姓名： | 张恒 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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| 基金项目： | Project supported by the National Natural Science Foundation of China (Grant Nos 60276004 and 60390073). |
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| 摘 要： | Within the framework of effective mass approximation, the ground state of excitons confined in spherical core-shell quantum-dot quantum-well (QDQW) nanoparticles is solved by using the stochastic variational method, in which the finite band offset and the heavy (light) hole exciton states are considered. The calculated 1s_e－1s_h transition energies for the chosen CdS/HgS/CdS QDQW samples are in good agreement with the experimental measurements. Moreover, some previous theoretical results are improved.
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| 关 键 词： | 电子空穴对 量子点 纳米粒子 随机变量 半导体 |
| 收稿时间： | 2003-12-23 |
| 修稿时间： | 2004-08-03 |
Ground state of excitons in quantum-dot quantum-well nanoparticles: stochastic variational method |
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| Zhang Heng and Shi Jun-Jie. Ground state of excitons in quantum-dot quantum-well nanoparticles: stochastic variational method[J]. Chinese Physics, 2004, 13(12): 2136-2140. DOI: 10.1088/1009-1963/13/12/028 |
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| Authors: | Zhang Heng and Shi Jun-Jie |
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| Affiliation: | State Key Laboratory for Mesoscopic Physics and School of Physics, Peking University, Beijing 100871, China |
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| Abstract: | Within the framework of effective mass approximation, the ground state of excitons confined in spherical core-shell quantum-dot quantum-well (QDQW) nanoparticles is solved by using the stochastic variational method, in which the finite band offset and the heavy (light) hole exciton states are considered. The calculated 1s_e－1s_h transition energies for the chosen CdS/HgS/CdS QDQW samples are in good agreement with the experimental measurements. Moreover, some previous theoretical results are improved. |
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| Keywords: | excitons CdS/HgS/CdS quantum-dot quantum-well nanoparticles stochastic variational method |
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