Publication detail

Temperature shift of the optical gap in some PbO?ZnO?P2O5 glasses

Authors: Schwarz Jiří | Tichá Helena | Tichý Ladislav

Year: 2007

Type of publication: článek v odborném periodiku

Name of source: Materials Letters

Publisher name: Elsevier Science BV

Place: Amsterdam

Page from-to: 520-522

Titles:

Language	Name	Abstract	Keywords
cze	Teplotní posun optické šířky zakázaného pásu skel systému PbO?ZnO?P2O5	The optical gap (Eg) between 4.54 eV?4.88 eV at room temperature was determined for PbO?ZnO?P2O5 glasses with the formal content of P2O5 in the region of 30 to 50 mol% and with the formal content of PbO in the region of 50 to 45 mol%, respectively. The temperature (T) dependence of the optical gap (Eg(T)) in the region 80<T[K]<600 was determined, and an electron?phonon interaction is suggested to be a major contribution to the temperature shift of the optical gap. In the temperature region of 300?600 K, the Eg(T) dependence can be approximated by a simple linear relation with the temperature coefficient (γ) of the optical gap in the region 6.04≤γ×10000 [eV/K]≤7.39.
eng	Temperature shift of the optical gap in some PbO?ZnO?P2O5 glasses	The optical gap (Eg) between 4.54 eV?4.88 eV at room temperature was determined for PbO?ZnO?P2O5 glasses with the formal content of P2O5 in the region of 30 to 50 mol% and with the formal content of PbO in the region of 50 to 45 mol%, respectively. The temperature (T) dependence of the optical gap (Eg(T)) in the region 80<T[K]<600 was determined, and an electron?phonon interaction is suggested to be a major contribution to the temperature shift of the optical gap. In the temperature region of 300?600 K, the Eg(T) dependence can be approximated by a simple linear relation with the temperature coefficient (γ) of the optical gap in the region 6.04≤γ×10000 [eV/K]≤7.39.	Temperature shift of the optical gap P2O5 glasses

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