PHOTOINDUCED EFFECTS IN THIN FILMS OF CHALCOGENIDE GLASSY Ga6Sb18S76
S.I. Mekhtiyeva, R.I. Alekberov, I.R. Ismayilov
   download pdf   

ABSTRACT

The article studies the effect of ultraviolet illumination on the optical emission spectrum of a Ga6Sb18S76 chalcogenide glassy thin film. It was found that the increase in the optical bandgap (Eg) at the initial stage of the exposure time (t=0-20 min) is due to the breaking of low-energy Sb-Sb (1.31 eV), Ga-Ga (1.48 eV) bonds under the influence of photo-induction, as well as the formation of new high-energy bonds (Ga-S, Sb-S, Ga-O, Sb-O) due to chemical activity. It is shown that the decrease in Eg at the exposure time of t=20-40 min may be due to the breaking of high energy Ga-S (~2.51 eV) and Sb-S (~2.23 ÷3.59 eV) bonds under the influence of photo-induction. A slight increase in Eg at an exposure time of t=40–90 min is due to the formation of a thin layer of stronger oxide bonds (Ga-O, Sb-O) on the surface as a result of the rupture of highly concentrated heteropolar bonds (Ga-S, Sb-S) and as a result, photo-induced volume expansion occurs.

Keywords: amorphous, glass, phototransparency, photodarkening
DOI:10.70784/azip.2.2025262

Received: 02.06.2025
Internet publishing: 20.06.2025    AJP Fizika A 2025 02 az p.62-65

AUTHORS & AFFILIATIONS

Institute of Physics named after H.M.Abdullayev of the Ministry of Science and Education Republic of Azerbaijan, 131 H.Javid ave. Baku, AZ-1073, Azerbaijan
E-mail: Rahim-14@mail.ru

Graphics and Images

       

     Fig.1-2-3

 [1]   L Liu, X Zheng, X Xiao, Y Xu, X Cui, J Cui, C Guo, J Yang, H Guo. Vol. 9, № 9 / 1 September 2019 / Optical Materials Express 3582-3593.
[2]   J. L. Adam and X. Zhang, Chalcogenide Glasses: Preparation, Properties and Applications (Woodhead Publishing, 2014).
[3]   S. D. Jackson. “Towards high-power mid-infrared emission from a fibre laser,” Nat. Photonics 6(7), 423–431, 2012.
[4]   B.J. Eggleton, T.D. Vo, R.Pant, M. Pelusi, D.Yong Choi, S. Madden, and B. Luther-Davies. “Photonic chip based ultrafast optical processing based on high nonlinearity dispersion engineered chalcogenide waveguides,” Laser Photonics Rev. 6(1), 97–114, 2012.
[5]   M.-L. Anne, J. Keirsse, V. Nazabal, K. Hyodo, S. Inoue, C. Boussard-Pledel, H. Lhermite, J. Charrier, K. Yanakata and O. Loreal, et al. “Chalcogenide glass optical waveguides for infrared biosensing,” Sensors 9(9), 7398–7411, 2009.
[6]   J. Cui, X. Xiao, Y. Xu, X. Cui, M. Chen, J. Guo, M. Lu, B. Peng and H. Guo. “Mid-infrared emissions of Dy3+ doped Ga-As-S chalcogenide glasses and fibers and their potential for a 4.2 μm fiber laser,” Opt. Mater. Express 8 (8), 2089–2102, 2018.
[7]   M. Asobe, T. Ohara, I. Yokohama, and T. Kaino. “Fabrication of Bragg grating in chalcogenide glass fibre using the transverse holographic method,” Electron. Lett.32(17), 1611–1613 1996.
[8]   M. Bernier, M. El-Amraoui, J. Couillard, Y. Messaddeq and R. Vallée. “Writing of bragg gratings through the polymer jacket of low-loss as 2 s 3 fibers using femtosecond pulses at 800 nm,” Opt. Lett. 37(18), 3900–3902, 2012.
[9]   A.A. Othman. Influence of ultraviolet irradiation on the optical properties of amorphous Sb10Se90 thin films, Thin Solid Films 515, 2006, 1634–1639.
[10]  D. Usanov, A. Nezhdanov, M. Kudryashov, I. Krivenkov, A. Markelov, V. Trushin, L. Mochalov, D. Gogova, A. Mashin. Some insights into the mechanism of photoluminescence of As-S-based films synthesized by PECVD. Journal of Non-Crystalline Solids, 2019, v 513, p.120–124.
[11]  Y Zhang, Q Jiao, B Ma, X Zhang, X Liu, S Dai. Effective ionic transport in AgI based Ge(Ga)–Sb–S chalcogenide glasses Journal of the American Ceramic Society, 2019, v.102, p.7065-7070
[12]  A.A. Othman, H.H. Amer, M.A. Osman and A.Dahshan. Radiation Effects & Defects in Solids. 2004, Vol. 159, pp. 659–666.
[13]  L.Tichy, H. Ticha, P. Nagels and R. Callarets. 1998, Mat. Letts.,36, 294.
[14]  J.Z. Liu and P.C. Taylor. 1990, Phys. Rev. B, 41, 3163.
[15]  K. Tanaka. Amorphous Chalcogenide Semiconductors and Related Materials, K. Tanaka, K. Shimakawa, Springer Nature Switzerland AG, 2021, p. 310.