Preparation of highly luminescent CdSe quantum dots by reverse micelles
- Authors
- Liu, Kang; Park, Sang Joon
- Issue Date
- Jul-2014
- Publisher
- IOP PUBLISHING LTD
- Citation
- JAPANESE JOURNAL OF APPLIED PHYSICS, v.53, no.8
- Journal Title
- JAPANESE JOURNAL OF APPLIED PHYSICS
- Volume
- 53
- Number
- 8
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/12493
- DOI
- 10.7567/JJAP.53.08ME03
- ISSN
- 0021-4922
- Abstract
- CdSe quantum dots (QDs) with relatively high photoluminescence (PL) quantum yield (QY) (about 30%) were prepared by a safe, low-cost, and simple synthesis method, utilizing a sodium bis(2-ethylhexyl) sulfosuccinate (AOT)/water/cyclohexane microemulsion system. Cadmium chloride (CdCl2) and selenium powder were used as the cadmium and selenium sources, respectively. Size-tunable CdSe nanoparticles were obtained at various water-to-surfactant ratios, W ([H2O]/[surfactant]). The size of the CdSe nanoparticles increased, and the UV-vis absorption and PL peaks shifted towards the red region as W increased. Interestingly, the redshift also occurred when the ratio of Cd to Se increased. The highest PL efficiency was obtained at W of 5 and a Cd/Se ratio of 2 : 1. In addition, the CdSe nanoparticles with higher Cd to Se molar ratio (3/1) showed a higher stability against photooxidation. (C) 2014 The Japan Society of Applied Physics
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - 공과대학 > 화공생명공학과 > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/12493)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.