Limits...
Highly Efficient Near-IR Photoluminescence of Er Immobilized in Mesoporous SBA-15.

Xue YL, Wu P, Liu Y, Zhang X, Lin L, Jiang Q - Nanoscale Res Lett (2010)

Bottom Line: It is a 29.3% boost in fluorescent cross section compared to what has been obtained in conventional silica.The upconversion coefficient in Yb-Er-SBA-15 is relatively small compared to that in other ordinary glass hosts.The increased fluorescent cross section and lowered upconversion coefficient could benefit for the high-gain optical amplifier.

View Article: PubMed Central - HTML - PubMed

ABSTRACT
SiO(2) mesoporous molecular sieve SBA-15 with the incorporation of erbium ions is studied as a novel type of nanoscopic composite photoluminescent material in this paper. To enhance the photoluminescence efficiency, two schemes have been used for the incorporation of Er(3+) where (1) Er(3+) is ligated with bis-(perfluoromethylsulfonyl)-aminate (PMS) forming Er(PMS)(x)-SBA-15 and (2) Yb(3+) is codoped with Er(3+) forming Yb-Er-SBA-15. As high as 11.17 × 10(-21)cm(2) of fluorescent cross section at 1534 nm and 88 nm of "effective bandwidth" have been gained. It is a 29.3% boost in fluorescent cross section compared to what has been obtained in conventional silica. The upconversion coefficient in Yb-Er-SBA-15 is relatively small compared to that in other ordinary glass hosts. The increased fluorescent cross section and lowered upconversion coefficient could benefit for the high-gain optical amplifier. Finally, the Judd-Ofelt theory has also been used for the analyses of the optical spectra of Er(PMS)(x)-SBA-15.

No MeSH data available.


Refractive index of Er(PMS)x-SBA-15
© Copyright Policy
Related In: Results  -  Collection


getmorefigures.php?uid=PMC2991226&req=5

Figure 6: Refractive index of Er(PMS)x-SBA-15

Mentions: The dispersion measurement in Fig. 6 shows a very small range of variation for refractive index from 1.096 to 1.103 for the wavelength ranging from 800 to 1700 nm. In comparison with conventional silica, the mesoporous silica of SBA-15, containing a large quantity of well-ordered mesopores, is considered to have a higher porosity. This would result in a relatively smaller index of refraction.


Highly Efficient Near-IR Photoluminescence of Er Immobilized in Mesoporous SBA-15.

Xue YL, Wu P, Liu Y, Zhang X, Lin L, Jiang Q - Nanoscale Res Lett (2010)

Refractive index of Er(PMS)x-SBA-15
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC2991226&req=5

Figure 6: Refractive index of Er(PMS)x-SBA-15
Mentions: The dispersion measurement in Fig. 6 shows a very small range of variation for refractive index from 1.096 to 1.103 for the wavelength ranging from 800 to 1700 nm. In comparison with conventional silica, the mesoporous silica of SBA-15, containing a large quantity of well-ordered mesopores, is considered to have a higher porosity. This would result in a relatively smaller index of refraction.

Bottom Line: It is a 29.3% boost in fluorescent cross section compared to what has been obtained in conventional silica.The upconversion coefficient in Yb-Er-SBA-15 is relatively small compared to that in other ordinary glass hosts.The increased fluorescent cross section and lowered upconversion coefficient could benefit for the high-gain optical amplifier.

View Article: PubMed Central - HTML - PubMed

ABSTRACT
SiO(2) mesoporous molecular sieve SBA-15 with the incorporation of erbium ions is studied as a novel type of nanoscopic composite photoluminescent material in this paper. To enhance the photoluminescence efficiency, two schemes have been used for the incorporation of Er(3+) where (1) Er(3+) is ligated with bis-(perfluoromethylsulfonyl)-aminate (PMS) forming Er(PMS)(x)-SBA-15 and (2) Yb(3+) is codoped with Er(3+) forming Yb-Er-SBA-15. As high as 11.17 × 10(-21)cm(2) of fluorescent cross section at 1534 nm and 88 nm of "effective bandwidth" have been gained. It is a 29.3% boost in fluorescent cross section compared to what has been obtained in conventional silica. The upconversion coefficient in Yb-Er-SBA-15 is relatively small compared to that in other ordinary glass hosts. The increased fluorescent cross section and lowered upconversion coefficient could benefit for the high-gain optical amplifier. Finally, the Judd-Ofelt theory has also been used for the analyses of the optical spectra of Er(PMS)(x)-SBA-15.

No MeSH data available.