Nitrogen implantation of zinc arsenic tellurite glasses
- PDF / 2,621,240 Bytes
- 10 Pages / 595.276 x 790.866 pts Page_size
- 45 Downloads / 273 Views
RESEARCH
Nitrogen implantation of zinc arsenic tellurite glasses Shaik Kareem Ahmmad 1 & P. Magudapathy 2 & Avula Edukondalu 3 & Shaik Amer Ahmed 3 & Syed Rahman 3 Received: 4 April 2020 / Revised: 17 July 2020 / Accepted: 15 September 2020 # Australian Ceramic Society 2020
Abstract We have implanted xZnF2–(20-x)ZnO–40As2O3–40TeO2 (x = 4 and 20 mol%) glasses with nitrogen ions at different doses. The glass samples were characterized by Rutherford backscattering spectrometry for the concentration depth profiles of the implanted atoms, by SEM analysis for surface morphology, and also by UV–vis absorption spectroscopy. It was observed that in both the glass systems, there is an increase in the values of penetration depth R, projected range Rp, and straggle ΔRp as the N+ implantation dose grows from 5 × 1016 to 5 × 1017 ions/cm2. Scanning electron micrographs show a considerable change in the surface topography between the unimplanted and nitrogen-implanted regions. After nitrogen ion implantation, the transmittance was found to decrease while the absorption edge shifts towards higher wavelength with the increase in the nitrogen implantation doses in both the glass systems. The observed reduction in optical band gap in the both the glass systems can be attributed to the effect of band tailing due to the defects produced during nitrogen implantation. Keywords Glasses . RBS . SEM . UV–vis absorption spectroscopy
Introduction Tellurite-fabricated glasses have been the emphasis of high interest in recent years due to their interesting electrical, optical, and magnetic properties [1, 2]. In addition, having a unique structure [3, 4], tellurite glasses also have good mechanical strength and chemical stability [5–7], low melting temperature, large linear [4, 8] and nonlinear refractive indices [7, 8], and good optical transmission at infrared [9] and visible Highlights ➢ Zinc arsenic tellurite glasses have been prepared and studied by ion implantation. ➢ The RBS spectra were stimulated with the SRIM 2003 program. The spectra display the existence of the target elements. ➢ The absorption edge shifts to the higher wavelength with the increase in implantation doses. ➢ A decrease in the band gap and band edge sharpness is also observed with increasing implantation dose due to the defects produced through nitrogen implantation. * Shaik Kareem Ahmmad [email protected] 1
Department of Physics, Muffakham Jah College of Engineering and Technology, Hyderabad, India
2
Materials Science Group, IGCAR, Kalpakkam, Tamil Nadu, India
3
College of Science, Osmania University, Hyderabad, India
wavelength [4, 10, 11]. These properties create tellurite glasses noble candidates for an increase of optical devices [4, 12]. Tellurium oxide (TeO2) under typical conditions does not have the capability to form glass without a modifier like an alkali, alkaline earth, and transition metal oxide or additional glass modifiers [6, 13]. Binary zinc–tellurite glasses have been widely studied [14–16] and can be exceptional for the super heavy op
Data Loading...
