Direct evaluation about structure and optical property of individual multi-shell quantum dot by TEM

M. Uehara, N. Nakahigashi, Y. Sato, M. Terauchi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

CdSe nanocrystals (NCs) that show an excellent photoluminescence (PL) attract much attention owing to their promising applications in LED. They are usually coated by the wider band materials such CdS and ZnS in order to improve the quantum yield with the chemical resistance. However, the relationship between optical property and structure is not clarified, because the evaluation of core/shell structure is difficult. The common evaluation of optical property that is conducted as a collectivity such as UV-vis absorbance has some uncertainty, because the morphology of individual NC is not complete same and the property would be not also same. In this study, we have tried to direct-evaluate the optical properties and structure of individual single NCs. Even the optical properties from UV to NIR can be evaluated by the HR-EELS (Low-loss region) using the monochromator TEM. We have discussed the optical and structure property by the comparison of above evaluation and HR-STEM analysis.

Original languageEnglish
Title of host publicationNanotechnology General Session
EditorsO. M. Leonte, L. Chen, D. Kim, P. Atanassov
PublisherElectrochemical Society Inc.
Pages7-12
Number of pages6
Edition53
ISBN (Electronic)9781607685395
DOIs
Publication statusPublished - 2017
EventSymposium on Nanotechnology General Session - PRiME 2016/230th ECS Meeting - Honolulu, United States
Duration: 2016 Oct 22016 Oct 7

Publication series

NameECS Transactions
Number53
Volume75
ISSN (Print)1938-6737
ISSN (Electronic)1938-5862

Other

OtherSymposium on Nanotechnology General Session - PRiME 2016/230th ECS Meeting
CountryUnited States
CityHonolulu
Period16/10/216/10/7

ASJC Scopus subject areas

  • Engineering(all)

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