Effects of dopant concentration and annealing temperature on the phosphorescence from Zn2SiO4: Mn2+ nanocrystals

Patra, Amitava; Baker, Gary A.; Baker, Sheila N.

doi:10.1016/j.jlumin.2004.06.008

Cited by 66 publications

(40 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The band at 255 nm is considered to be responsible for the emission at 525 nm. Furthermore, the spectra fully agree with previously measured excitation spectrum of Zn 2 SiO 4 :Mn [30]. The broad excitation peak at 255 nm could be attributed to a charge transfer transition (or the ionization of manganese) from the divalent manganese ground state (Mn 2? )…”

Section: Photoluminescence Propertysupporting

confidence: 88%

See 1 more Smart Citation

In-situ sol–gel synthesis of luminescent Mn2+-doped zinc silicate nanophosphor

Omri

Mir

2016

J Mater Sci: Mater Electron

View full text Add to dashboard Cite

Nanocrystalline undoped and Mn 2? -doped zinc silicate (a-Zn 2 SiO 4 :Mn) nanophosphors were in situ prepared by a sol-gel technique. The crystallite morphology for Mn-doped and undoped nanophosphors have been determined by X-ray diffraction and transmission electron microscopy. In the case of undoped Zn 2 SiO 4 nanophosphors, the powder with an average particle size around 80 nm shows a strong luminescence band centred at 760 nm at room temperature in the visible range. In addition, Zn 2 SiO 4 :Mn nanophosphors emit very strong green luminescence (525 nm), which originated from the 4 T 1 -6 A 1 transitions of Mn 2? ions. The luminescence spectra and lifetime of the excited state of Mn 2? ionsdoped Zn 2 SiO 4 nanocrystals are investigated.

show abstract

Section: Photoluminescence Propertysupporting

confidence: 88%

“…to the conduction band (CB). This transition will be further discussed later based on the previous literature reports [30,31]. In addition to the CT band, other bands (inset) of Mn 2?…”

Section: Photoluminescence Propertymentioning

confidence: 69%

In-situ sol–gel synthesis of luminescent Mn2+-doped zinc silicate nanophosphor

Omri

Mir

2016

J Mater Sci: Mater Electron

View full text Add to dashboard Cite

show abstract

“…The strong excitation band peaking around at 270 nm that corresponded to the excitation of the Mn 2+ charge transfer transition from its ground state 6 A 1 (S) to the conduction band [3]. On the other hand, green emission spectra with rather narrow full-width at half-maximum (FWHM) of 35-38 nm were observed around 525 nm under UV light at 270 nm and ascribed to the typical 4 T 1 (G 4 ) - 6 A 1 ( 6 S) transition of Mn 2+ . We observed a lower excitation and emission intensity for the powders derived from sol with R = 5.0.…”

Section: Methodsmentioning

confidence: 99%

“…Since such method allow for lower temperature process, better homogeneity, and higher emission efficiency of the powder phosphors [5][6]. However, the willemite derived from the previous sol-gel processes is generally crystallized by heating at temperatures higher than 800 o C; and further, it is hard to avoid the segregation of residual zinc oxide phase during firing.…”

Section: Introductionmentioning

confidence: 99%

Characterization of Manganese-doped Willemite Green Phosphor Gel Powders

Tsai

Lin

Yang

2011

IOP Conf. Ser.: Mater. Sci. Eng.

View full text Add to dashboard Cite

“…45,46 Recently, for advancing display device technology, fine particle phosphors with smaller size and more uniform shape than those commercially available phosphors are in urgent need. [47][48][49][50] It is of interest to prepare nanoscaled phosphor to improve the dispersion and luminescence properties. 51 Additionally, nanoscaled phosphor materials offer the potential for preparing smoother films with higher packing densities than conventional micron-sized phosphors.…”

Section: +mentioning

confidence: 99%