SEMI OpenIR  > 中国科学院半导体研究所(2009年前)
Excitation transfer in vertically self-organized pairs of unequal-sized InAs/GaAs quantum dots
Wang HL; Feng SL; Yang FH; Sun BQ; Jiang DS; Wang HL,Chinese Acad Sci,Inst Semicond,Natl Lab Superlattices & Microstruct,Beijing 100083,Peoples R China.
2000
Source PublicationCHINESE PHYSICS LETTERS
ISSN0256-307X
Volume17Issue:8Pages:615-616
AbstractThe excitation transfer processes in vertically self organized pairs of unequal-sized quantum dots (QD's), which are created in InAs/GaAs bilayers with different InAs deposition amounts in the first and second layers, have been investigated experimentally by photoluminescence technique. The distance between the two dot layers is varied from 3 to 12 nm. The optical properties of the formed pairs of unequal-sized QD's with clearly discernible ground-state transition energy depend on the spacer thickness. When the spacer layer of GaAs is thin enough, only one photoluminescence peak related to the large QD ensemble has been observed as a result of strong electronic coupling in the InAs QD pairs. The results provide evidence for nonresonant energy transfer from the smaller QDs in the second layer to the larger QD's in the first layer in such an asymmetric QD pair.
metadata_83chinese acad sci, inst semicond, natl lab superlattices & microstruct, beijing 100083, peoples r china; qufu normal univ, dept phys, qufu 273165, shandong provin, peoples r china
KeywordGrowth Gaas Photoluminescence Luminescence Relaxation Gaas(100) Islands
Subject Area半导体物理
Indexed BySCI
Language英语
Date Available2010-08-12
Document Type期刊论文
Identifierhttp://ir.semi.ac.cn/handle/172111/12470
Collection中国科学院半导体研究所(2009年前)
Corresponding AuthorWang HL,Chinese Acad Sci,Inst Semicond,Natl Lab Superlattices & Microstruct,Beijing 100083,Peoples R China.
Recommended Citation
GB/T 7714
Wang HL,Feng SL,Yang FH,et al. Excitation transfer in vertically self-organized pairs of unequal-sized InAs/GaAs quantum dots[J]. CHINESE PHYSICS LETTERS,2000,17(8):615-616.
APA Wang HL,Feng SL,Yang FH,Sun BQ,Jiang DS,&Wang HL,Chinese Acad Sci,Inst Semicond,Natl Lab Superlattices & Microstruct,Beijing 100083,Peoples R China..(2000).Excitation transfer in vertically self-organized pairs of unequal-sized InAs/GaAs quantum dots.CHINESE PHYSICS LETTERS,17(8),615-616.
MLA Wang HL,et al."Excitation transfer in vertically self-organized pairs of unequal-sized InAs/GaAs quantum dots".CHINESE PHYSICS LETTERS 17.8(2000):615-616.
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