Nanomaterials for lighting
|Martin Zachau , Armin Konrad|
OSRAM GmbH (OSRAM), Munich, Germany
Today a variety of non-luminescent nano materials are used for lighting applications. Nano silica and nano alumina synthesized by flame pyrolysis are commercially available. Nano silica is a highly reactive source in the production of Si-based phosphors for fluorescent lamps or LEDs. Nano silica is also used for fluidization, adjusting tixotropy and as a scattering pigment in LEDs. A thin layer of densely packed nano silica or nano alumina between glass and phosphor layer serves as a selective UV reflector and/or a barrier to mercury diffusion /1,2/. Nano alumina is added to the phosphor layer to improve adhesion. Finally non-luminescent nano materials may be used to form a thin conformal coating around phosphor particles that protects the phosphor particles and improves the maintenance of fluorescent lamps or LEDs.
Presentation: invited oral at E-MRS Fall Meeting 2003, Perspectives of nanotechnology, by Martin Zachau
See On-line Journal of E-MRS Fall Meeting 2003
Submitted: 2003-05-04 19:19 Revised: 2009-06-08 12:55