Spin-coating of Ge23Sb7S70 chalcogenide glass thin films

Song, Shanshan; Carlie, Nathan; Boudies, Julie; Petit, Laëticia; Richardson, Kathleen; Arnold, Craig B.

doi:10.1016/j.jnoncrysol.2009.07.015

Cited by 69 publications

(29 citation statements)

References 34 publications

(42 reference statements)

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“…Thus, the formation of similar alkyl ammonium germanium sulfide (AAGS) salts can be expected during dissolving of germanium-sulfide ChG in BA, but the AAGS salts probably start to decompose at higher temperatures in comparison with AAAS salts. Release of organic molecules during the thermal treatment of spin-coated Ge25S75 thin films affects also the chemical stability of thin films [20,21]. In order to investigate the changes in chemical resistance of deposited thin films the samples annealed at various temperatures were etched in 0.1% vol.…”

Section: Resultsmentioning

confidence: 99%

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Structure and properties of spin-coated Ge_25S_75 chalcogenide thin films

Šlang

Janíček

Pálka

2016

Opt. Mater. Express

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Amorphous chalcogenide thin films of Ge25S75 composition have been deposited by spin-coating technique. Optical properties of thin films were investigated by spectroscopic ellipsometry in UV-MIR spectral range. Obtained results prove increase of thin films refractive index in the transparent region and decrease of their thickness with increasing annealing temperature implying densification of the glass structure. Short wavelength absorption edge is shifting to lower energies (red shift) with increasing annealing temperature. Decreasing organic molecules content with increasing temperature of annealing was observed in MIR part of extinction coefficient and verified by Raman spectroscopy and EDS. Raman spectra also gave evidence of thermo-induced structural polymerization and decomposition of organic salts molecules yielding thin films with structure similar to the structure of the source bulk glass.

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Section: Resultsmentioning

confidence: 99%

“…Germanium-based spin-coated thin films of Ge23Sb7S70 glass composition were successfully prepared [20], but further study of other germanium-based systems is needed to obtain plurality of different non-toxic optical materials prepared by solution based deposition techniques.…”

Section: Introductionmentioning

confidence: 99%

Structure and properties of spin-coated Ge_25S_75 chalcogenide thin films

Šlang

Janíček

Pálka

2016

Opt. Mater. Express

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“…Chalcogenide glass thin films are conventionally prepared by vacuum coating techniques (thermal evaporation or sputtering) or pulsed laser deposition [9,10]. However, less conventional techniques such as spin-coating of glassy films from solution can have certain advantages for realizing large area or thick film deposition while achieving similar optical, physical, and chemical properties of other deposition techniques [11]. Spin-coating approaches have the added advantage that the same solutions can be adopted for other precision dispensing techniques such as mold casting, ink jet or laser direct write [12][13][14], giving spatial control of the added material.…”

Section: Introductionmentioning

confidence: 99%

Influence of annealing conditions on the optical and structural properties of spin-coated As_2S_3 chalcogenide glass thin films

Song¹,

Dua²,

Arnold³

2010

Opt. Express

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Spin-coating of chalcogenide glass is a low-cost, scalable method to create optical grade thin films, which are ideal for visible and infrared applications. In this paper, we study the influence of annealing on optical parameters of As 2 S 3 films by examining UV-visible and infrared spectroscopy and correlating the results to changes in the physical properties associated with solvent removal. Evaporation of excess solvent results in a more highly coordinated, denser glass network with higher index and lower absorption. Depending on the annealing temperature and time, index values ranging from n = 2.1 to the bulk value (n = 2.4) can be obtained, enabling a pathway to materials optimization. 275-284 (1987). 19. S. Shtutina, M. Klebanov, S. R. V. Lyubin, and V. Volterra, "Photoinduced phenomena in spin-coated vitreous As2S3 and AsSe films," Thin Solid Films 261(1-2), 263-265 (1995). 20. J. Tauc, "Absorption edge and internal electric fields in amorphous semiconductors," Mater. Res. Bull. 5(8), 721-729 (1970). 21. R. Swanepoel, "Determination of the thickness and optical constans of amorphous silicon," J. Phys. E 16(12), 1214-1222 (1983). 22. E. Marquez, J. Ramirez-Malo, P. Villarest, R. Jimenez-Garay, P. J. S. Ewen, and A. E. Owen, "Calculation of the thickness and optical constants of amorphous arsenic sulfide films from their transmission spectra," J. Phys. D Appl. Phys. 25(3), 535-541 (1992). 23. S. Wemple, and M. DiDomenico, "Behavior of electronic dielectric constant in covalent and ionic materials,"Phys. Rev. B 3(4), 1338-1351 (1971). 24. S. Wemple, "Refractive-index behavior of amorphous semiconductors and glasses," Phys. Rev. B 7(8), 3767-3777 (1973).

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“…Thus, the potential advantages of low-temperature solution routes to amorphous chalcogenides glasses (ChG) are evident. The realization of thin films using less conventional techniques such as spin-coating of glassy films from solution is advantageous for realizing large area, thick film, or localized material deposition with less cost [8]. Considering the importance of the nano colloidal solutions used for the fabrication of thin films we report, for the first time to our knowledge, the preparation and investigation of nano colloidal solutions of Ge-Se-Sb chalcogenide glass.…”

Section: Introductionmentioning

confidence: 99%