https://scholars.lib.ntu.edu.tw/handle/123456789/503953
標題: | Successful growth of two different quantum dots on one substrate | 作者: | C. F. Tsai J. H. Cheng S. C. Yang C. C. Hau YUAN-HUEI CHANG YANG-FANG CHEN JERRY CHENG-CHE HSU LI-CHYONG CHEN |
關鍵字: | Light-emitting diodes; Quantum dots; ZnSe; ZnTe | 公開日期: | 2004 | 出版社: | Elsevier B.V. | 卷: | 21 | 期: | 2–4 | 起(迄)頁: | 372-375 | 來源出版物: | ?Physica E- Low-dimensional Systems and Nanostructures? | 摘要: | We report the successful growth of ZnSe and ZnTe quantum dots (QDs) embedded in ZnS on GaAs substrate. These QDs have good optical properties and show quantum confinement effect. High-resolution electron scanning microscope studies show that these QDs are grown in Volmer-Weber mode. It is found that the size of the QDs is controlled by the growth duration. When the growth time is short, high density of QDs could be fabricated, but with a long growth time the small QDs get together to form a large cluster. We also show that with this growth method it is possible to grow both ZnSe quantum and ZnTe QDs on one substrate at the same time. For this dual QDs system, two peaks corresponding to the emission from the ZnSe dots (3.0 eV, blue-violet) and ZnTe dots (2.6 eV, green-blue) could be observed at the same time in the photoluminescence measurement. © 2003 Elsevier B.V. All rights reserved. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/503953 https://www.scopus.com/inward/record.uri?eid=2-s2.0-1642304340&doi=10.1016%2fj.physe.2003.11.035&partnerID=40&md5=f595939608132a601a697b8786b0f894 |
ISSN: | 13869477 | DOI: | 10.1016/j.physe.2003.11.035 | SDG/關鍵字: | High resolution electron microscopy; Light emitting diodes; Metallorganic chemical vapor deposition; Morphology; Photoluminescence; Scanning electron microscopy; Semiconducting zinc compounds; Semiconductor growth; Surfaces; Thermal effects; ZnSe; ZnTe; Semiconductor quantum dots |
顯示於: | 凝態科學研究中心 |
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