Title :
ZnS:Mn/PF nanoparticles: A novel white-light-emitting phosphor material
Author :
Kuan-Yu Chen ; Pin-Chun Shen ; Hua-Yi Hsueh ; Ching-Fuh Lin
Author_Institution :
Grad. Inst. of Photonics & Optoelectron., Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
A rare-earth free white light-emitting material is attained by synthesizing ZnXMn1-XS (ZnS:Mn) nanostructures caped with poly (9,9-di-n-hexylfluorenyl-2,7-diyl) (PF). The photoluminescence spectrum of ZnS:Mn/PF nanocomposites shows a narrow band emission peaked at 440 nm and a broad band emission ranging from 500 nm to 650 nm under ultraviolet (UV)-light excitation. The blue light is attributed to the band emission of PF. The Orange-yellowish light is contributed to the 4T1-6A1 transition of Mn2+ doped in the ZnS crystals. Additionally, the green light originates from the interfacial states formed between PF and ZnS:Mn. White light is then generated through the combination of the three lights, which can be tuned by manipulating the concentration of ZnS:Mn.
Keywords :
light emitting devices; nanoparticles; nanophotonics; organic compounds; phosphors; photoluminescence; ZnXMn1-XS(ZnS:Mn); nanoparticles; nanostructures; orange-yellowish light; photoluminescence spectrum; poly (9,9-di-n-hexylfluorenyl-2,7-diyl); rare-earth free white light-emitting material; ultraviolet-light excitation; wavelength 440 nm; wavelength 500 nm to 650 nm; white-light-emitting phosphor material; Conferences; Nanotechnology; Low Color Temperature; Nanomaterial; Phosphor; Solid-State Lighting; White LED;
Conference_Titel :
Nanotechnology (IEEE-NANO), 2014 IEEE 14th International Conference on
Conference_Location :
Toronto, ON
DOI :
10.1109/NANO.2014.6968116
