Please use this identifier to cite or link to this item:
doi:10.22028/D291-24066
Title: | Optical properties of an electron bound to a double well potential in a dielectric |
Author(s): | Aegerter, Michel A. Lüty, Fritz W. |
Language: | English |
Year of Publication: | 1970 |
OPUS Source: | Proceedings of the International Conference on Luminescence : held at the Univ. of Delaware, Newark, aug. 25-29, 1969 / ed. Ferd Williams. - Amsterdam : North-Holland, 1970. - (Journal of luminescence ; 1/2), S. 624-632 |
SWD key words: | Absorption Emission Oszillator |
DDC notations: | 500 Science |
Publikation type: | Conference Paper |
Abstract: | The absorption and emission properties of F2+ center in KCl (2 adjacent anion vacancies which bind 1 electron) were investigated between 0.6 and 5 eV by using an optically aligned center system. Energy positions, level degeneracies, polarization behavior and oscillator strengths of 8 absorption transitions were found in close agreement to the calculated states of the H2+ molecular ion corrected for a single dielectric constant and the proper separation between the 2 effective positive charges. Excitation of the lowest 2póu state at 1.38 ì leads with temperature independent quantum efficiency to a Stokes shifted emission at 1.67 ì almost in mirror symmetry with the zero phonon line at 1.5260 ì. Excitation of all higher absorption transitions (2pðu, etc.) at liquid helium temperature (LHeT) produces a visible luminescence at 600 nm. At higher temperature a thermally activated process (activation energy ÄE = 0.063 eV) transfers the excitation energy to the lowest excited state 2póu quenching the 600-nm luminescence and producing the IR emission. |
Link to this record: | urn:nbn:de:bsz:291-scidok-22109 hdl:20.500.11880/24122 http://dx.doi.org/10.22028/D291-24066 |
Date of registration: | 7-Jul-2009 |
Faculty: | SE - Sonstige Einrichtungen |
Department: | SE - INM Leibniz-Institut für Neue Materialien |
Collections: | INM SciDok - Der Wissenschaftsserver der Universität des Saarlandes |
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