Synthesis of CdS nanocrystals in polymeric films studied by in-situ GID and GISAXS

Di Luccio, TizianaENEA Centro Ricerche Portici,California Institute of Technology (author)

In this work, we describe the synthesis of CdS nanocrystals in thin polymeric films by in-situ Grazing Incidence Diffraction (GID) and Grazing Incidence Small Angle Scattering (GISAXS). The 2D GISAXS patterns indicate how the precursor structure is altered as the temperature is varied from 25°C to 300°C. At 150°C, the CdS nanocrystals start to arrange themselves in a hexagonal lattice with a lattice parameter of 27 A. The diffraction intensity from the hexagonal lattice reaches a maximum at 170"C and decreases steadily upon further heating above 220°C indicating loss of symmetry. Correspondingly, the GID scans at 170°C show strong crystalline peaks from cubic CdS nanocrystals that are about 2 nm size. The results indicate that a temperature of 170°C is sufficient to synthesize CdS nanocrystals without degradation of the polymer matrix (Topas) in thin films (about 30nm).

Carbone, DinaLund University,Lunds universitet,MAX IV-laboratoriet,MAX IV Laboratory,European Synchrotron Radiation Facility(Swepub:lu)maxl-grc (author)
Masala, SilviaKing Abdullah University of Science and Technology (author)
Ramachandran, KarthikCalifornia Institute of Technology (author)
Kornfield, JulieEuropean Synchrotron Radiation Facility (author)
Eres, G. (editor)
Chueh, W. (editor)
Baniecki, J. (editor)
Arena, D. (editor)
Alamgir, F. (editor)
ENEA Centro Ricerche PorticiCalifornia Institute of Technology (creator_code:org_t)

In:Insights for Energy Materials Using In-Situ Charaterization: Springer Science and Business Media LLC1810, s. 9-140272-91729781510826625
In:MRS Proceedings: Springer Science and Business Media LLC1810, s. 9-141946-4274

By the author/editor: Di Luccio, Tizia ...; Carbone, Dina; Masala, Silvia; Ramachandran, Ka ...; Kornfield, Julie; Eres, G.; show more...; Chueh, W.; Baniecki, J.; Arena, D.; Alamgir, F.; show less...

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