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Paper Abstract and Keywords
Presentation 2009-08-11 12:05
Growth and characterization of telecom-wavelength quantum dots using Bi as a surfactant
Hiroshi Okamoto (Hirosaki Univ.), Takehiko Tawara, Hideki Gotoh, Hidehiko Kamada, Tetsuomi Sogawa (NTT) CPM2009-46
Abstract (in Japanese) (See Japanese page) 
(in English) The effectiveness of adding TMBi during telecom-wavelength-quantum-dot growth on improving its optical quality and extending its emission wavelength is reported. It was confirmed that the Bi acted as a kind of surfactant during the growth. In addition, it was discussed that the origin of the emission-wavelength extension was resembled to "activated spinodal decomposition" reported for MBE grown QDs. Regarding the QD density, it was confirmed that the density was increased by using much higher V/III condition than usual during the growth. As for investigation for increasing the QD-stack number, a dislocation-free multiple QD stack in which each QD was not coupled to the other one located in neighbor layers was obtained by introducing GaAs0.72P0.28 strain compensation layers. The special photoluminescence feature observed for this multiple QD-stack sample was discussed with the existence of non-radiative recombination centers. Further investigation of the recombination centers is needed for further improvement of the QD optical quality.
Keyword (in Japanese) (See Japanese page) 
(in English) quantum dot / InAs / telecom wavelength / surfactant / Bi / photoluminescence / TEM / STEM  
Reference Info. IEICE Tech. Rep., vol. 109, no. 171, CPM2009-46, pp. 67-72, Aug. 2009.
Paper # CPM2009-46 
Date of Issue 2009-08-03 (CPM) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
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reproduction		 All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF CPM2009-46

Conference Information
Committee CPM  
Conference Date 2009-08-10 - 2009-08-11 
Place (in Japanese) (See Japanese page) 
Place (in English) Hirosaki Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Electronic Component Parts and Materials, etc. 
Paper Information
Registration To CPM 
Conference Code 2009-08-CPM 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Growth and characterization of telecom-wavelength quantum dots using Bi as a surfactant 
Sub Title (in English)  
Keyword(1) quantum dot  
Keyword(2) InAs  
Keyword(3) telecom wavelength  
Keyword(4) surfactant  
Keyword(5) Bi  
Keyword(6) photoluminescence  
Keyword(7) TEM  
Keyword(8) STEM  
1st Author's Name Hiroshi Okamoto  
1st Author's Affiliation Hirosaki University (Hirosaki Univ.)
2nd Author's Name Takehiko Tawara  
2nd Author's Affiliation NTT Basic Research Laboratories (NTT)
3rd Author's Name Hideki Gotoh  
3rd Author's Affiliation NTT Basic Research Laboratories (NTT)
4th Author's Name Hidehiko Kamada  
4th Author's Affiliation NTT Basic Research Laboratories (NTT)
5th Author's Name Tetsuomi Sogawa  
5th Author's Affiliation NTT Basic Research Laboratories (NTT)
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Speaker Author-1 
Date Time 2009-08-11 12:05:00 
Presentation Time 25 minutes 
Registration for CPM 
Paper # CPM2009-46 
Volume (vol) vol.109 
Number (no) no.171 
Page pp.67-72 
#Pages 6 
Date of Issue 2009-08-03 (CPM) 

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