Micro-Raman spectra of bulk GexASxSE1-2x chalcogenide glasses

Proceedings of the Romanian Academy Series A-Mathematics Physics Technical Sciences Information Science

O.V. IASENIUC¹ 

关键词: chalcogenide glasses;    Micro-Raman spectra;    coordination number.;   

DOI  :  

学科分类：计算机科学（综合）

来源: Editura Academiei Romane

【 摘 要 】

In this work are reported the Micro-Raman spectra of GexAsxSe1-2x (x = 0.05÷0.30). TheMicro-Raman spectra consist of three main peaks located around ν = 193 cm-1, ν = 213 cm-1, andν = 255 cm-1. The peaks around ν = 193 cm-1 and ν = 213 cm-1 could be attributed to the vibration ofGeSe bonds. The presence of the Raman peak at ν = 255 cm-1 is due to the bond-stretching vibrationof the disordered Se chains and rings. With the increase of the Ge concentration this peak shifts to ahigher wavenumber due to the shortening of Se chains. The peak around ν = 300 cm-1 is characteristicto Ge-Ge vibration mode. The Ge concentration slightly changes the shape of Micro-Raman spectra,mainly its ratio of the intensity.

【 授权许可】

Unknown