Synthesis of lead chalcogenide nanoparticles in block copolymer micelles: investigation of optical properties and fabrication of 2-D arrays of nanoparticles
SCIE
SCOPUS
- Title
- Synthesis of lead chalcogenide nanoparticles in block copolymer micelles: investigation of optical properties and fabrication of 2-D arrays of nanoparticles
- Authors
- Anthony, SP; Cho, WJ; Lee, JI; Kim, JK
- Date Issued
- 2009-01
- Publisher
- ROYAL SOC CHEMISTRY
- Abstract
- Narrow band gap PbS and PbSe semiconductor nanocrystals were prepared in the poly(4-vinyl pyridine) core of self assembled polystyrene-block-poly(4-vinyl pyridine) copolymer micelles in toluene at room temperature, and characterized by high resolution-transmission electron microscopy and X-ray diffractograms. Optical absorption and photoluminescence (PL) studies of the nanocrystals showed the quantized phenomena. The PL intensity of the PbSe nanocrystals was strongly enhanced, with a slight red shift in the peak position, by treating with aqueous Na2S solution. Interestingly, the inclusion of ZnS amorphous nanoparticles into the P4VP/PbSe core leads to a large red shift in the peak position, which covers the technologically important range (1.3 to 1.55 mu m), with strong enhancement of the emission intensity. We fabricated a monolayer thin film of PbSe nanocrystals by spin coating on a silicon wafer, and it showed similar PL behavior to that in solution.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/10917
- DOI
- 10.1039/B814157F
- ISSN
- 0959-9428
- Article Type
- Article
- Citation
- JOURNAL OF MATERIALS CHEMISTRY, vol. 19, no. 2, page. 280 - 285, 2009-01
- Files in This Item:
-
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.