Nanostructured zinc sulphide phosphors
1998 (English)In: Materials Research Society Symposium - Proceedings, 1998, 369-374 p.Conference paper (Refereed)Text
Zinc sulphide (ZnS) particles are efficient phosphors for application in flat-panel displays. Spherical ZnS particles were prepared by precipitation from a homogeneous solution. Nanoparticles of 20 to 40 nm having a very narrow size distribution could be synthesized by using complexing chelates such as acetate and acetylacetonate. Complexing of the precipitating cation with the anions present in the system lead to a limited concentration of free cations in the solution. This strongly influences the kinetics of the primary particle agglomeration/growth, resulting in nanometer-sized ZnS particles. Nanostructured ZnS synthesized in this way are polycrystalline particles composed of crystallites of 5-10 nm. The synthesis of very small, non-agglomerated, nanocrystalline particles in the 5-10 nm size range was also possible, making use of a strong complexing ligand (thioglycerol) during the synthesis. The synthesis of controlled monosized ZnS particles will be presented and discussed. The photoluminescence characteristics of ZnS make this material a suitable candidate as phosphor for application in low voltage display technology. The effect of Mn2+ doping on the luminescence characteristics of ZnS will also be discussed.
Place, publisher, year, edition, pages
1998. 369-374 p.
Agglomeration, Complexation, Composition effects, Doping (additives), Nanostructured materials, Particle size analysis, Phosphors, Photoluminescence, Polycrystalline materials, Precipitation (chemical), Synthesis (chemical), Ligands, Zinc sulfide
IdentifiersURN: urn:nbn:se:kth:diva-182934ScopusID: 2-s2.0-0031707916OAI: oai:DiVA.org:kth-182934DiVA: diva2:918328
Warrendale, PA, United States, Proceedings of the 1997 MRS Fall Symposium, 30 November 1997 through 3 December 1997, Boston, MA, USA
NR 201604122016-04-112016-02-242016-04-12Bibliographically approved