Tunable photoluminescent metal-organic-frameworks and method of making the same
| DWPI Title: New metal-organic-framework material comprising non-rare earth element transition metal atoms or rare earth element atoms, useful in solid state lighting device and light emitting diode |
| Abstract: The present disclosure is directed to new photoluminescent metal-organic frameworks (MOFs). The newly developed MOFs include either non rare earth element (REE) transition metal atoms or limited concentrations of REE atoms, including: Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, Ge, Y, Ru, Ag, Cd, Sn, Sb, Ir, Pb, Bi, that are located in the MOF framework in site isolated locations, and have emission colors ranging from white to red, depending on the metal concentration levels and/or choice of ligand. |
| Use: The metal-organic-framework material is useful in solid state lighting device and LED (all claimed). |
| Advantage: The metal-organic-framework material is energy-efficient, promotes high quantum yield and has excellent thermal stability and reliable photoluminescent performance at operating temperatures as high as 150° C. The metal-organic-framework material are inherently more tunable due to its inorganic-organic hybrid structure, has a homogeneous composition and limited defect sites, allows controlled spatial distribution of metal ions into the framework, eliminates agglomeration, are produced at much lower temperatures and can be processed as films. The metal-organic-framework material provides a red light emitter having narrowband emission, is a broad white light emitter with warm white light color properties, and provides light emitter that does not thermally quench after heating to commercial device operating temperatures. |
| Novelty: Metal-organic-framework material, is new. |
| Filed: 6/30/2014 |
| Application Number: US14319675A |
| Tech ID: SD 12799.1 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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