Investigation of Urbach's rule region in undoped and Cu doped (80 −x)Sb2O3–20Li2O–xMoO3glasses

Autor:	M. T. Soltani, P. Petkova, H. Touiri
Rok vydání:	2013
Předmět:	Materials science Condensed matter physics Phonon Exciton Cu doped Condensed Matter Physics Absorption (electromagnetic radiation) Mathematical Physics Atomic and Molecular Physics and Optics
Zdroj:	Physica Scripta. :014041
ISSN:	1402-4896 0031-8949
DOI:	10.1088/0031-8949/2013/t157/014041
Popis:	The aim of this study is to analyse the interactions of the excitations by the light absorption (excitons) with phonons of undoped and Cu doped (80 − x)Sb2O3–20Li2O–xMoO3 glasses (x = 0, 10, 20 and 30 mol%). We report on optical absorption of these materials at room temperature in the spectral region 2.54–2.87 eV. The explanation of Urbach's rule is given. Urbach's parameter σ(T) is determined for all samples. The dynamic disorder and phonon frequencies are calculated. The shape of Urbach's energy is also investigated.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3f1df9efeffef9da83f1bf652ee11550 https://doi.org/10.1088/0031-8949/2013/t157/014041 Zobrazit plný text záznamu