Digital Doping in Magic-Sized CdSe Clusters

Cited 16 time in webofscience Cited 0 time in scopus
149 Viewed 8 Downloaded
Title
Digital Doping in Magic-Sized CdSe Clusters
Author(s)
Muckel F.; Jiwoong Yang; Lorenz S.; Woonhyuk Baek; Hogeun Chang; Taeghwan Hyeon; Bacher G.; Rachel Fainblat
Publication Date
2016-07
Journal
ACS NANO, v.10, no.7, pp.7135 - 7141
Publisher
AMER CHEMICAL SOC
Abstract
Magic-sized semiconductor clusters represent an exciting class of materials located at the boundary between quantum dots and molecules. It is expected that replacing single atoms of the host crystal with individual dopants in a one-by-one fashion can lead to unique modifications of the material properties. Here, we demonstrate the dependence of the magneto-optical response of (CdSe)13 clusters on the discrete number of Mn2+ ion dopants. Using time-of-flight mass spectrometry, we are able to distinguish undoped, monodoped, and bidoped cluster species, allowing for an extraction of the relative amount of each species for a specific average doping concentration. A giant magneto-optical response is observed up to room temperature with clear evidence that exclusively monodoped clusters are magneto-optically active, whereas the Mn2+ ions in bidoped clusters couple antiferromagnetically and are magneto-optically passive. Mn2+-doped clusters therefore represent a system where magneto-optical functionality is caused by solitary dopants, which might be beneficial for future solotronic applications. © 2016 American Chemical Society
URI
https://pr.ibs.re.kr/handle/8788114/3144
ISSN
1936-0851
Appears in Collections:
Center for Nanoparticle Research(나노입자 연구단) > Journal Papers (저널논문)
Files in This Item:
10.Digital Doping.pdfDownload

qrcode

  • facebook

    twitter

  • Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
해당 아이템을 이메일로 공유하기 원하시면 인증을 거치시기 바랍니다.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse