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Free-standing optoelectronic graphene-CdS-graphene oxide composite paper produced by vacuum-assisted self-assembly.
- Source :
- Applied Physics A: Materials Science & Processing; Mar2012, Vol. 106 Issue 4, p779-784, 6p, 1 Color Photograph, 1 Black and White Photograph, 5 Graphs
- Publication Year :
- 2012
-
Abstract
- Free-standing optoelectronic graphene-CdS-graphene oxide (G-CdS-GO) composite papers were prepared by vacuum-assisted self-assembly. G-CdS hybrids were first prepared by a hydrothermal method and GO acts as a dispersant which makes it easier to disperse them to form relatively stable aqueous suspensions for fabricating paper. Transmission electron microscopy shows that CdS quantum dots (QDs) with an average size of approximately 1-2 nm were distributed uniformly on the graphene sheets. Photoluminescence measurements for the as-prepared G-CdS-GO composite paper showed that the surface defect related emissions of attached CdS QDs decrease and blue shift obviously due to the change in particle size and the interaction of the surface of the CdS QDs with both the GO and the graphene sheets. The resulting paper holds great potential for applications in thin film solar cells, sensors, diodes, and so on. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09478396
- Volume :
- 106
- Issue :
- 4
- Database :
- Complementary Index
- Journal :
- Applied Physics A: Materials Science & Processing
- Publication Type :
- Academic Journal
- Accession number :
- 71882662
- Full Text :
- https://doi.org/10.1007/s00339-012-6774-0