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

Tiziana Di Luccio, Dina Carbone, Silvia Masala, Karthik Ramachandran, Julie Kornfield

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

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). © 2015 Materials Research Society.
Original languageEnglish (US)
Title of host publicationMRS Proceedings
PublisherCambridge University Press (CUP)
Pages9-14
Number of pages6
ISBN (Print)9781510826625
DOIs
StatePublished - Jul 7 2015

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01

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