{"title":"(Ge2S8)100-xTex 卤化物玻璃:近红外光学器件的物理力学研究","authors":"","doi":"10.1016/j.ceramint.2024.07.046","DOIUrl":null,"url":null,"abstract":"<div><p>To better understand the variations in physical, mechanical, and electrical properties, (Ge<sub>2</sub>S<sub>8</sub>)<sub>100-x</sub>Te<sub>x</sub><span> chalcogenide glasses have been synthesized. These glasses encompass a composition range of 0 ≤ </span><em>x</em> ≤ 12. The mechanical properties have been studied by determining the longitudinal (<em>ν</em><sub><em>L</em></sub>) and transverse (<em>ν</em><sub><em>T</em></sub><span>) ultrasonic velocities. A network structure evaluation with composition has been performed via parameters like coordination number (<</span><em>N</em><sub><em>r</em></sub><span>>), crosslinking density (</span><em>D</em><sub><em>CL</em></sub><span>), glass transition temperature (</span><em>T</em><sub><em>g</em></sub><span>), etc. Also, the elastic parameters trend values have been associated with the decrease in the cohesive energy value of the system. An overall physical analysis of the </span><em>Ge-S-Te</em><span><span> systems reveals that the system's rigidity and the cross-linking density are decreasing. Within the temperature range of 300–420 K, the </span>temperature dependency<span> of the dark conductivity and photoconductivity<span> has been investigated. The intensity-dependent photoconductivity is governed by a power law, with intensity (</span></span></span><em>I</em><sub><em>ph</em></sub> = G<sup><em>δ</em></sup>) with <em>δ</em><span><span> lying between 0.5 and 1. The photosensitivity values reveal that the glassy system may be suitable for applications in </span>optoelectronic devices<span>. A correlation among the parameters has been established by calculating elastic parameters and conductivity measurements and evaluating the network structure theoretically. The present efforts clarify the composition-structure dependence and relationship in the </span></span><em>Ge-S-Te</em> glass series.</p></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":null,"pages":null},"PeriodicalIF":5.1000,"publicationDate":"2024-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"(Ge2S8)100-xTex chalcogenide glasses: Physico-mechanical study for NIR optical devices\",\"authors\":\"\",\"doi\":\"10.1016/j.ceramint.2024.07.046\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>To better understand the variations in physical, mechanical, and electrical properties, (Ge<sub>2</sub>S<sub>8</sub>)<sub>100-x</sub>Te<sub>x</sub><span> chalcogenide glasses have been synthesized. These glasses encompass a composition range of 0 ≤ </span><em>x</em> ≤ 12. The mechanical properties have been studied by determining the longitudinal (<em>ν</em><sub><em>L</em></sub>) and transverse (<em>ν</em><sub><em>T</em></sub><span>) ultrasonic velocities. A network structure evaluation with composition has been performed via parameters like coordination number (<</span><em>N</em><sub><em>r</em></sub><span>>), crosslinking density (</span><em>D</em><sub><em>CL</em></sub><span>), glass transition temperature (</span><em>T</em><sub><em>g</em></sub><span>), etc. Also, the elastic parameters trend values have been associated with the decrease in the cohesive energy value of the system. An overall physical analysis of the </span><em>Ge-S-Te</em><span><span> systems reveals that the system's rigidity and the cross-linking density are decreasing. Within the temperature range of 300–420 K, the </span>temperature dependency<span> of the dark conductivity and photoconductivity<span> has been investigated. The intensity-dependent photoconductivity is governed by a power law, with intensity (</span></span></span><em>I</em><sub><em>ph</em></sub> = G<sup><em>δ</em></sup>) with <em>δ</em><span><span> lying between 0.5 and 1. The photosensitivity values reveal that the glassy system may be suitable for applications in </span>optoelectronic devices<span>. A correlation among the parameters has been established by calculating elastic parameters and conductivity measurements and evaluating the network structure theoretically. The present efforts clarify the composition-structure dependence and relationship in the </span></span><em>Ge-S-Te</em> glass series.</p></div>\",\"PeriodicalId\":267,\"journal\":{\"name\":\"Ceramics International\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":5.1000,\"publicationDate\":\"2024-07-04\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Ceramics International\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0272884224029213\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MATERIALS SCIENCE, CERAMICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Ceramics International","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0272884224029213","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, CERAMICS","Score":null,"Total":0}
(Ge2S8)100-xTex chalcogenide glasses: Physico-mechanical study for NIR optical devices
To better understand the variations in physical, mechanical, and electrical properties, (Ge2S8)100-xTex chalcogenide glasses have been synthesized. These glasses encompass a composition range of 0 ≤ x ≤ 12. The mechanical properties have been studied by determining the longitudinal (νL) and transverse (νT) ultrasonic velocities. A network structure evaluation with composition has been performed via parameters like coordination number (<Nr>), crosslinking density (DCL), glass transition temperature (Tg), etc. Also, the elastic parameters trend values have been associated with the decrease in the cohesive energy value of the system. An overall physical analysis of the Ge-S-Te systems reveals that the system's rigidity and the cross-linking density are decreasing. Within the temperature range of 300–420 K, the temperature dependency of the dark conductivity and photoconductivity has been investigated. The intensity-dependent photoconductivity is governed by a power law, with intensity (Iph = Gδ) with δ lying between 0.5 and 1. The photosensitivity values reveal that the glassy system may be suitable for applications in optoelectronic devices. A correlation among the parameters has been established by calculating elastic parameters and conductivity measurements and evaluating the network structure theoretically. The present efforts clarify the composition-structure dependence and relationship in the Ge-S-Te glass series.
期刊介绍:
Ceramics International covers the science of advanced ceramic materials. The journal encourages contributions that demonstrate how an understanding of the basic chemical and physical phenomena may direct materials design and stimulate ideas for new or improved processing techniques, in order to obtain materials with desired structural features and properties.
Ceramics International covers oxide and non-oxide ceramics, functional glasses, glass ceramics, amorphous inorganic non-metallic materials (and their combinations with metal and organic materials), in the form of particulates, dense or porous bodies, thin/thick films and laminated, graded and composite structures. Process related topics such as ceramic-ceramic joints or joining ceramics with dissimilar materials, as well as surface finishing and conditioning are also covered. Besides traditional processing techniques, manufacturing routes of interest include innovative procedures benefiting from externally applied stresses, electromagnetic fields and energetic beams, as well as top-down and self-assembly nanotechnology approaches. In addition, the journal welcomes submissions on bio-inspired and bio-enabled materials designs, experimentally validated multi scale modelling and simulation for materials design, and the use of the most advanced chemical and physical characterization techniques of structure, properties and behaviour.
Technologically relevant low-dimensional systems are a particular focus of Ceramics International. These include 0, 1 and 2-D nanomaterials (also covering CNTs, graphene and related materials, and diamond-like carbons), their nanocomposites, as well as nano-hybrids and hierarchical multifunctional nanostructures that might integrate molecular, biological and electronic components.