Phosphor composition having selected surface coatings

1. A phosphor composition, comprising:

one or more phosphors having on a surface thereof a coating of ethyl cellulose, said one or more phosphors configured to emit radiation upon interaction with an initiation energy.

2. The phosphor composition of claim 1 , wherein said one or more phosphors includes at least one or more of CaWO 4 :Pb 2+ , CaWO 4 :W, Sr 3 (PO 4 ) 2 : Eu 2+ , Ba 3 (PO 4 ) 2 : Eu 2+ , Y 2 SiO 5 :Ce 3+ , SrMg(SiO 4 ) 2 :Eu 2+ , BaMg 2 Al 14 O 24 :Eu 2+ , ZnSiO 4 : :Mn 2+ , Y 3 (Al,Ga) 5 O 12 :Ce 3+ , BaMg 2 Al 14 O 24 :Mn 2+ , BaMgAl 14 O 23 :Mn 2+ , SrAl 12 SiO 19 :Mn 2+ , ZnAl 12 O 19 : Mn 2+ , CaAl 12 O 19 :Mn 2+ , YBO 3 :Tb 3+ , Sr 4 Si 3 O 8 Cl 4 :Eu 3+ , Y 2 O 3 :Eu 3+ , Y 2 SiO 5 :Eu 3+ , Y 3 Al 5 O 12: Eu 3+ , CaSiO 3 :Mn 2+ ,YVO 4 :Eu 3+ , Zn 2 SiO 4 :Mn 2+ .

3. The phosphor composition of claim 1 , wherein said one or more phosphors includes at least one or more of silicates, phosphates, tungstates, and aluminates.

4. The phosphor composition of claim 3 , wherein the one or more phosphors comprises one or more of visible-light emitting phosphors and ultraviolet-light-emitting phosphors.

5. The phosphor composition of claim 1 , wherein the one or more of phosphors comprises a mixture of the phosphors.

6. The phosphor composition of claim 1 , wherein the one or more phosphors further comprises a plasmonics agent including a metallic structure.

7. The phosphor composition of claim 6 , wherein the metallic structure comprises at least one of nanospheres, nanorods, nanocubes, nanopyramids, nanoshells, multi-layer nanoshells, and combinations thereof.

8. The phosphor composition of claim 6 , wherein the plasmonics agent comprises a dielectric-metal composite or a plurality of differently sized metal particles disposed in vicinity of each other as a composite plasmonics agent.