ZIB

Hits per page

hits 1 - 2 | 2 hits

Sorting

Electronic Resource

Optical spectroscopy of PbCl2 particles embedded in a NaCl host matrix (1985)

Zaldo, C. ; García Solé, J. ; Diéguez, E. ; [et al.]

College Park, Md. : American Institute of Physics (AIP)

The Journal of Chemical Physics 83 (1985), S. 6197-6200

add to mindlist on the mindlist

Details

ISSN: 1089-7690

Source: AIP Digital Archive

Topics: Physics , Chemistry and Pharmacology

Notes: The absorption and luminescence data reported in this paper definitely confirm that the precipitates formed during high-temperature aging of Pb-doped NaCl are PbCl2 microcrystals. A detailed comparison of the optical spectra of the precipitates and free PbCl2 is presented. The absorption and luminescence spectra are essentially similar in both cases, although the splitted structure of the prominent exciton band has now been resolved for the first time in the absorption spectrum of the precipitates. The splitting has been interpreted in terms of the noncubic crystal field effect on the 3P1 excited level of Pb+2 which is considered as a cationic exciton. The gap energy Eg and the binding energy εb of the exciton have also been determined (Eg=4.86 eV, εb=0.18 eV). The same UV and blue luminescence bands, as well as a thermally induced interconversion among them, have now been observed for the precipitates as well as for free PbCl2. This luminescence behavior, not previously understood, has been explained in terms of two coexisting AT and Ax minima in the adiabatic energy surface of the 3P1 level of a Pb+2 localized exciton (Fukuda's model).

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.449859

Permalink

Library	Location	Call Number	Volume/Issue/Year	Availability

Others were also interested in ...

Paper (German National Licenses)

Fulltext

Electronic Resource

Photoluminescence of Ti3+ in P2O5-Na2O-Al2O3 glass (1988)

Bausa, L. E. ; Jaque, F. ; Garcia Sole, J. ; [et al.]

Springer

Journal of materials science 23 (1988), S. 1921-1922

add to mindlist on the mindlist

Details

ISSN: 1573-4803

Source: Springer Online Journal Archives 1860-2000

Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics

Notes: Abstract The optical properties (absorption and luminescence) of Ti3+ in a P2O5 Na2O-Al2O3 glass have been studied in the temperature range 12 to 300 K. A very broad infrared emission band at 860 nm, has been observed for the first time in an inorganic glass, when excitation is performed in the Ti3+ absorption band (T2g → Eg transition in cubic field approximation). The spectroscopic characteristics of this system are compared with those of the Ti3+ as a dopant in AL2O3 single crystals.