Please use this identifier to cite or link to this item:
|Title:||Luminescence studies of CdS spherical particles via hydrothermal synthesis|
|Authors:||Xu, G.Q. |
|Source:||Xu, G.Q., Liu, B., Xu, S.J., Chew, C.H., Chua, S.J., Gana, L.M. (2000-06). Luminescence studies of CdS spherical particles via hydrothermal synthesis. Journal of Physics and Chemistry of Solids 61 (6) : 829-836. ScholarBank@NUS Repository. https://doi.org/10.1016/S0022-3697(99)00403-5|
|Abstract:||The spherical particles of CdS consisting of nanoparticles (approx. 100 nm) were synthesized by a hydrothermal process. The particle formation and growth depend on the rate of sulfide-ion generation and diffusion-controlled aggregation of nanoparticles. As demonstrated in the profiles of powder X-ray diffraction, the crystalline phases are governed by the reaction temperature. Photoluminescence studies on CdS particles show two emission bands at the room temperature. The red emission at 680 nm is due to sulfur vacancies, and a new infrared red (IR) emission at 760 nm is attributed to self-activated centers. A red shift of IR band with the decrease of temperature was explained with a configurational coordinate model. The different saturation limits for the red and IR bands are discussed in terms of the formation of donor-acceptor pairs and exciton in CdS particles.|
|Source Title:||Journal of Physics and Chemistry of Solids|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Feb 15, 2018
WEB OF SCIENCETM
checked on Feb 7, 2018
checked on Feb 13, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.