3-Mercaptopropionic, 4-Mercaptobenzoic, and Oleic Acid-Capped CdSe Quantum Dots: Interparticle Distance, Anchoring Groups, and Surface Passivation
Joint Authors
Ferreira Leite Santos, Jacqueline
José Leite Santos, Marcos
Kohlrausch, Emerson C.
dos Santos, José Augusto Lucena
Baum, Fabio
Tavares, Fabiele C.
Pretto, Tatiane
dos Santos, Francisco P.
Khan, Sherdil
Source
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-02-18
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
The optoelectronic properties of quantum dots are strongly controlled by the chemical nature of their surface-passivating ligands.
In this work, we present the synthesis, characterization, and surface modification of CdSe quantum dots (QDs) and their application in solar cells.
CdSe QDs were capped in oleic acid (OA), 3-mercaptopropionic acid (MPA), and 4-mercaptobenzoic acid (MBA).
The QDs were characterized by transmission electron microscopy (TEM), UV-Vis absorption and emission spectrophotometry, thermogravimetric analyses, and 1H and 13C NMR.
From TEM analysis, it has been observed that interparticle distance can be effectively controlled by the presence of different molecular size ligands.
From the 1H and 13C NMR, specific types of interactions between the Cd2+ and the ligands have been observed.
Although CdSe/OA presented larger interparticle distance as compared to CdSe/MPA and CdSe/MBA, the photocatalytic oxidation of the thiol groups on the surface of the MPA- and MBA-based quantum dots resulted in poor surface stabilization, ultimately resulting in poor power conversion efficiencies which were ca.
70% smaller than that of OA-based solar cell.
American Psychological Association (APA)
dos Santos, José Augusto Lucena& Baum, Fabio& Kohlrausch, Emerson C.& Tavares, Fabiele C.& Pretto, Tatiane& dos Santos, Francisco P.…[et al.]. 2019. 3-Mercaptopropionic, 4-Mercaptobenzoic, and Oleic Acid-Capped CdSe Quantum Dots: Interparticle Distance, Anchoring Groups, and Surface Passivation. Journal of Nanomaterials،Vol. 2019, no. 2019, pp.1-9.
https://search.emarefa.net/detail/BIM-1181945
Modern Language Association (MLA)
dos Santos, José Augusto Lucena…[et al.]. 3-Mercaptopropionic, 4-Mercaptobenzoic, and Oleic Acid-Capped CdSe Quantum Dots: Interparticle Distance, Anchoring Groups, and Surface Passivation. Journal of Nanomaterials No. 2019 (2019), pp.1-9.
https://search.emarefa.net/detail/BIM-1181945
American Medical Association (AMA)
dos Santos, José Augusto Lucena& Baum, Fabio& Kohlrausch, Emerson C.& Tavares, Fabiele C.& Pretto, Tatiane& dos Santos, Francisco P.…[et al.]. 3-Mercaptopropionic, 4-Mercaptobenzoic, and Oleic Acid-Capped CdSe Quantum Dots: Interparticle Distance, Anchoring Groups, and Surface Passivation. Journal of Nanomaterials. 2019. Vol. 2019, no. 2019, pp.1-9.
https://search.emarefa.net/detail/BIM-1181945
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1181945