| Full text | |
| Author(s): |
Ermakov, Viktor A.
[1]
;
Clemente da Silva Filho, Jose Maria
[1]
;
Bonato, Luiz Gustavo
[2]
;
Vardhan Mogili, Naga Vishnu
[3]
;
Montoro, Fabiano Emmanuel
[3]
;
Iikawa, Fernando
[1]
;
Nogueira, Ana Flavia
[2]
;
Cesar, Carlos Lenz
[1, 4]
;
Jimenez-Villar, Ernesto
[1, 5]
;
Marques, Francisco Chagas
[1]
Total Authors: 10
|
| Affiliation: | [1] Univ Estadual Campinas, IFGW, BR-13083859 Sao Paulo - Brazil
[2] Univ Estadual Campinas, IQ, BR-13083861 Sao Paulo - Brazil
[3] CNPEM, LNNano, BR-13083970 Sao Paulo - Brazil
[4] Univ Fed Ceara, DF, BR-60440900 Fortaleza, Ceara - Brazil
[5] Inst Pesquisas Energet & Nucl, CNEN, BR-05508000 Sao Paulo, SP - Brazil
Total Affiliations: 5
|
| Document type: | Journal article |
| Source: | ACS OMEGA; v. 3, n. 2, p. 2027-2032, FEB 2018. |
| Web of Science Citations: | 3 |
| Abstract | |
In the last two decades, many experiments were conducted in self-organization of nanocrystals into two- and three-dimensional (3D) superlattices and the superlattices were synthesized and characterized by different techniques, revealing their unusual properties. Among all characterization techniques, X-ray diffraction (XRD) is the one that has allowed the confirmation of the 3D superlattice formation due to the presence of sharp and intense diffraction peaks. In this work, we study self-organized superlattices of quantum dots of PbS prepared by dropping a monodispersed colloidal solution on a glass substrate at different temperatures. We showed that the intensity of the low-angle XRD peaks depends strongly on the drying time (substrate temperature). We claim that the peaks are originated from the 3D superlattice. Scanning electron microscopy images show that this 3D superlattice (PbS quantum dots) is formed in flake's shape, parallel to the substrate surface and randomly oriented in the perpendicular planes. (AU) | |
| FAPESP's process: | 05/51689-2 - Optics and Photonics Research Center at UNICAMP |
| Grantee: | Hugo Luis Fragnito |
| Support Opportunities: | Research Grants - Research, Innovation and Dissemination Centers - RIDC |
| FAPESP's process: | 13/26385-6 - Development and study of nanoparticles that generates multiple excitons and plasmonic effects applied for solar cells |
| Grantee: | Viktor Ermakov |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 11/51959-0 - Biology of neoplastic diseases of bone marrow |
| Grantee: | Sara Teresinha Olalla Saad |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 12/10127-5 - Research and development of nanostructured materials for electronic and surface physics applications |
| Grantee: | Fernando Alvarez |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 17/05854-9 - Localization of light an avenue for manufacturing advanced photonic devices |
| Grantee: | Niklaus Ursus Wetter |
| Support Opportunities: | Research Grants - Visiting Researcher Grant - International |