Influence of compositional variations on optoelectrical properties of Ge20Sn10Se70−xTex glass system

Surbhi Sharma; Navjeet Sharma; Amit Sarin

doi:10.1117/1.OE.57.11.117110

21 November 2018 Influence of compositional variations on optoelectrical properties of Ge₂₀Sn₁₀Se_70−xTe_x glass system

Surbhi Sharma, Navjeet Sharma, Amit Sarin

Author Affiliations +

Optical Engineering, Vol. 57, Issue 11, 117110 (November 2018). https://doi.org/10.1117/1.OE.57.11.117110

Abstract

Variations in optical and electrical properties have been investigated by isoelectronic substitution of Te at the cost of Se in the Ge₂₀Sn₁₀Se_{70 − x}Te_x (x = 3, 6, 9, 12, and 15) system. The current study reports linear (i.e., μ, k, E_g) as well as nonlinear (i.e., μ₂ and χ³) optical transmission coefficients of as-prepared specimens. An overall increase in nonlinear parameters χ³ and μ₂ can be observed with an increase in the Te concentration. High nonlinearity makes these glasses a prominent candidate for optical device applications. Further attempt has been made to observe the variations in conductivity with respect to temperature for amorphous Ge₂₀Sn₁₀Se_{70 − x}Te_x (x = 3, 6, 9, 12, 15) thin films using a two-probe method and hence the band structure and corresponding conduction mechanism have been investigated.

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Surbhi Sharma, Navjeet Sharma, and Amit Sarin "Influence of compositional variations on optoelectrical properties of Ge₂₀Sn₁₀Se_70−xTe_x glass system," Optical Engineering 57(11), 117110 (21 November 2018). https://doi.org/10.1117/1.OE.57.11.117110

Received: 16 May 2018; Accepted: 25 October 2018; Published: 21 November 2018

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