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Shin, Tae Joo
UNIST Synchrotron Radiation Research Laboratory
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  • Synchrotron Radiation Application Researches

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Long-term stability of CdSe/CdZnS quantum dot encapsulated in a multi-lamellar microcapsule

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Title
Long-term stability of CdSe/CdZnS quantum dot encapsulated in a multi-lamellar microcapsule
Author
Park, Sang-YulKim, Hyo-SunYoo, JeseungKwon, SuyongShin, Tae JooKim, KyungnamJeong, SoheeSeo, Young-Soo
Issue Date
2015-07
Publisher
IOP PUBLISHING LTD
Citation
NANOTECHNOLOGY, v.26, no.27, pp.275602
Abstract
We developed a novel and easy encapsulation method for quantum dots (QDs) using a partially oxidized semi-crystalline polymeric material which forms a micron-sized granule with a multi-lamellar structure from a dilute solution. The QDs were highly dispersed in the granule in such a way that they were adsorbed on the lamella with similar to 12 nm spacing followed by lamellar stacking. The QDs were heavily loaded into the granule to 16.7 wt% without aggregation, a process which took only a few minutes. We found that the quantum yield of the QDs was not degraded after the encapsulation. The encapsulated QD-silicone composite exhibited excellent long-term photo- and thermal stability with its initial photoluminescence intensity maintained after blue LED light radiation for 67 days and storage at 85 degrees C and 85% relative humidity for 119 days
URI
https://scholarworks.unist.ac.kr/handle/201301/17055
URL
http://iopscience.iop.org/article/10.1088/0957-4484/26/27/275602/meta
DOI
10.1088/0957-4484/26/27/275602
ISSN
0957-4484
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