Preparation of high purity glasses based on germanium and gallium tellurides using chemical transport
Source abstract
Abstract
Thermodynamic modeling of Ga 2Te 3-Ga 2O 3-GaI 3 and GeTe-GeO 2-GeI 4 systems are carried out by the method of minimizing thermodynamic potentials in the temperature range 200–900°C. The efficiency of chemical transport method for vacuum loading of gallium(III) telluride and its purification from oxygen impurities is shown theoretically and experimentally. The method for preparation of high purity glasses based on germanium and gallium tellurides is developed. The technique includes the synthesis of glassy Ga 10Ge 15Te 75 alloy, its thermal decomposition with the release of tellurium and germanium(II) telluride, and the subsequent loading of nonvolatile gallium tellurides by chemical transport using gallium(III) iodide as a transporting agent. The advantages of the developed technique in comparison with those known in the literature are discussed. The sample of ultrapure Ga-Ge-Te glass with an oxygen impurity content chemically bound to germanium at a level of 1 ppb(wt) is prepared.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Phase-change materials and chalcogenides · Glass properties and applications · Optical properties and cooling technologies in crystalline materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (45)
Show source-provided references
1. Composition and Chemistry of the Atmospheres of Terrestrial Planets: Venus, the Earth, Mars, and Titan
2. Development of Infrared Countermeasure Technology and Systems
3. Investigations on Directed Infrared Countermeasures Risks to Fighter Aircraft Pilots10.5028/jatm.v5i4.267 ↗
4. Nanophotonic control of thermal radiation for energy applications [Invited]10.1364/OE.26.015995 ↗
5. IR differential-absorption lidars for ecological monitoring of the environment10.1070/QE2006v036n09ABEH006577 ↗
6. Infrared Methods for Gas Detection
7. Fiber evanescent wave spectroscopy using the mid-infrared provides useful fingerprints for metabolic profiling in humans10.1117/1.3253319 ↗
8. Fiber-optic probes enable cancer detection with FTIR spectroscopy10.1016/j.tibtech.2010.04.001 ↗
9. Novel NaI improved Ge-Ga-Te far-infrared chalcogenide glasses10.1016/j.infrared.2015.07.024 ↗
10. Glass formation and properties of Ge–Ga–Te–ZnI2 far infrared chalcohalide glasses10.1016/j.jnoncrysol.2013.05.002 ↗
11. Glass formation and properties of Ge–Te–BiI3 far infrared transmitting chalcohalide glasses10.1016/j.saa.2011.03.035 ↗
12. Compo[sitional dependence of the optical properties of novel Ge–Ga–Te–CsI far infrared transmitting chalcohalide glasses system10.1016/j.jpcs.2010.10.018 ↗
13. Preparation and investigation of the properties of Ge25-xGaxTe75-yIy Glass System (x = 5, 10, 15, y = 0–6)10.1016/j.jnoncrysol.2018.10.008 ↗
14. Te-based chalcohalide glasses for far-infrared optical fiber10.1364/OME.2.001470 ↗
15. Preparation and investigation of high purity Ge–Te–AgI glasses for optical application10.1016/j.jnoncrysol.2013.03.039 ↗
16. Optical properties of Ge–Te–Ga doping Al and AlCl3 far infrared transmitting chalcogenide glasses10.1016/j.infrared.2012.12.038 ↗
17. Optical properties of Ag- and AgI-doped Ge–Ga–Te far-infrared chalcogenide glasses10.1016/j.infrared.2016.04.035 ↗
18. Preparation of high-purity Te-rich Ge – Te – Se fibers for 5–15 infrared region10.1109/JLT.2013.2257163 ↗
19. Telluride glasses with far-infrared transmission up to 35 μm10.1016/j.optmat.2017.07.038 ↗
20. Te-based glass fiber for far-infrared biochemical sensing up to 16 μm10.1364/OE.22.021253 ↗
21. Tellurium-Based Far-Infrared Transmitting Glasses10.1111/j.1551-2916.2009.03323.x ↗
22. Purification of Te75Ga10Ge15 glass for far infrared transmitting optics for space application10.1016/j.optmat.2010.02.030 ↗
23. Determination of the vapor pressure of Ga2Te310.1016/0390-6035(77)90021-9 ↗
24. J. H. Greenberg, Thermodynamic basis of crystal growth. Phase P-T-X equilibrium and non-stoichiometry, Springer series in materials science, (1938) 250 pp. 10.1007/978-3-662-04876-4.
25. Schäfer · 1964 · 174
26. Preparation of high purity glasses in the Ga–Ge–As–Se system10.1016/j.optmat.2014.04.021 ↗
27. Preparation of high-purity germanium telluride based glasses with low oxygen impurity content10.1016/j.jnoncrysol.2020.120480 ↗
28. An Estimation of the Minimal Optical Loss in Chalcogenide Glasses
29. Ge-P-S chalcogenide glass fibers10.1143/JJAP.19.L603 ↗
30. Oxide impurity absorptions in Ge-Se-Te glass fibres10.1007/BF00544501 ↗
31. A Family of Far-Infrared-Transmitting Glasses in the Ga–Ge–Te System for Space Applications10.1002/adfm.200500645 ↗
32. Thermodynamic Analysis of the Crystallization Resistance of the Ge–S–Bi Glasses10.1134/S0036023621080027 ↗
33. Barin · 1995 · 1885
34. Thermochemical Data of Elements and Compounds
35. Untersuchungen zum chemischen Transport intermetallischer Phasen, I: GeTe, SnTe, PbTe10.1515/znb-1999-0606 ↗
36. Trends and prospects of development of chalcogenide fibers for mid infrared transmission10.1016/j.jnoncrysol.2012.12.048 ↗
37. Rolsten · 1961 · 441
38. On the thermodynamic properties of germanium-iodide compounds10.1016/S0021-9614(03)00123-X ↗
39. PCPDFWIN – a Windows retrieval/display program for accessing the ICDD PDF-2 database
40. Preparation of Ge20Se80 glasses with low hydrogen and oxygen impurities content for middle IR fiber optics10.1016/j.jnoncrysol.2019.119505 ↗
41. Distribution of elements in Ge–Se bulk glasses and optical fibers detected by inductively coupled plasma atomic emission spectrometry
42. Determination of Matrix Elements and Praseodymium in Ga–Ge–As–Se Glasses by Inductively Coupled Plasma–Atomic Emission Spectrometry10.1134/S1061934820070060 ↗
43. The vapor pressure of germanium telluride10.1021/j100814a519 ↗
44. Partial Pressures and High-Temperature Thermodynamic Properties for the Germanium-Tellurium System10.1007/s11669-019-00726-y ↗
45. Investigation into GeTe-Ga2Te3 system