Please use this identifier to cite or link to this item: http://cmuir.cmu.ac.th/jspui/handle/6653943832/61057
Title: Phase transformation of nanocrystalline CdS synthesized by solvothermal reaction
Authors: Titipun Thongtem
Anukorn Phuruangrat
Somchai Thongtem
Keywords: Engineering
Materials Science
Physics and Astronomy
Issue Date: 1-Dec-2007
Abstract: CdS was synthesized by solvothermal reaction of CdCl2.2.5H 2O and (NH2)2CS in ammonia solution at 200°C for 10 h. XRD, TEM and SAED show that the products are nanocrystalline CdS. The phase is 100 % hexagonal (hep) in pure water, gradually transformed into cubic with the increase of NH3 concentration, and 100 % cubic in 25 % NH3 solution. By using FTIR, no solvents were detected in the products. Raman analysis revealed the presence of ILO (longitudinal optical) and 2LO phonon peaks at 297.0 and 597.1 cm-1 for CdS (hep), and 295.9 and 596.9 cm-1 for CdS (cubic), respectively. Strong peaks of the photoluminescent (PL) spectra were detected at 450 nm for hep, and 519 nm for cubic.
URI: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=38349176842&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/61057
ISSN: 02555476
Appears in Collections:CMUL: Journal Articles

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