Silica-copper oxide (silica-CuO) composite thin films were prepared by a dipping sol-gel route using ethanolic solutions comprised TEOS and a copper-propionate complex. Sols with different TEOS/Cu-propionate (Si/Cu) molar ratios were prepared and applied on stainless steel substrates using dipping process. During the annealing process, copper-propionate complexes developed into particulate polycrystalline CuO dispersed in a partially crystallized silica matrix, as indicated by the X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) analyses. The gel thermal analysis revealed that the prepared material might be stable up to 400∘C. The silica-CuO/stainless steel system was characterized as a selective absorber surface and its solar selectivity parameters, absorptance (𝛼), and emittance (𝜀) were evaluated from UV-NIR reflectance data. The solar parameters of such a system were mostly affected by the thickness and phase composition of the SiO2-CuO film. Interestingly, the best solar parameters (𝛼 = 0.92 and 𝜀 = 0.2) were associated to the thinnest films, which comprised a CuO-Cu2O mixture immersed in the silica matrix, as indicated by XPS.
{"title":"SILICA-COPPER OXIDE COMPOSITE THIN FILMS AS SOLAR SELECTIVE COATINGS PREPARED BY DIPPING SOL GEL","authors":"C. Barrera, V. Mendez, L. Ortega","doi":"10.1155/2008/190920","DOIUrl":"https://doi.org/10.1155/2008/190920","url":null,"abstract":"Silica-copper oxide (silica-CuO) composite thin films were prepared by a dipping sol-gel route using ethanolic solutions comprised TEOS and a copper-propionate complex. Sols with different TEOS/Cu-propionate (Si/Cu) molar ratios were prepared and applied on stainless steel substrates using dipping process. During the annealing process, copper-propionate complexes developed into particulate polycrystalline CuO dispersed in a partially crystallized silica matrix, as indicated by the X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) analyses. The gel thermal analysis revealed that the prepared material might be stable up to 400∘C. The silica-CuO/stainless steel system was characterized as a selective absorber surface and its solar selectivity parameters, absorptance (𝛼), and emittance (𝜀) were evaluated from UV-NIR reflectance data. The solar parameters of such a system were mostly affected by the thickness and phase composition of the SiO2-CuO film. Interestingly, the best solar parameters (𝛼 = 0.92 and 𝜀 = 0.2) were associated to the thinnest films, which comprised a CuO-Cu2O mixture immersed in the silica matrix, as indicated by XPS.","PeriodicalId":7345,"journal":{"name":"Advances in Materials Science and Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2008/190920","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64163548","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Nanoporous metal phosphate (NP-MPO) materials are being developed for removal of contaminant oxyanions (As(OH) O 3 2 − , C r O 4 2 − , and T c O 4 − ), and cations (mercury, cadmium, and lead) from water and waste streams. Following sequestration, incorporation of metal laden NP-MPOs as a portion of cement formulation would provide an efficient and low-cost way to immobilize metal laden NP-MPOs in an easily handled waste form suitable for permanent disposal. There are no known investigations regarding the incorporation of NP-MPOs in concrete and the effects imparted on the physical and mechanical properties of concrete. Results of this investigation demonstrated that incorporating of NP-MPO materials requires additional water in the concrete formulation which decreases the compressive strength. Thus, incorporation of NP-MPOs in concrete may not serve as an efficient means for long-term disposal.
{"title":"Effect of Incorporating Nanoporous Metal Phosphate Materials on the Compressive Strength of Portland Cement","authors":"D. Wellman, K. Parker, S. Mattigod, G. Fryxell","doi":"10.1155/2008/238736","DOIUrl":"https://doi.org/10.1155/2008/238736","url":null,"abstract":"Nanoporous metal phosphate (NP-MPO) materials are being developed for removal of contaminant oxyanions (As(OH) O 3 2 − , C r O 4 2 − , and T c O 4 − ), and cations (mercury, cadmium, and lead) from water and waste streams. Following sequestration, incorporation of metal laden NP-MPOs as a portion of cement formulation would provide an efficient and low-cost way to immobilize metal laden NP-MPOs in an easily handled waste form suitable for permanent disposal. There are no known investigations regarding the incorporation of NP-MPOs in concrete and the effects imparted on the physical and mechanical properties of concrete. Results of this investigation demonstrated that incorporating of NP-MPO materials requires additional water in the concrete formulation which decreases the compressive strength. Thus, incorporation of NP-MPOs in concrete may not serve as an efficient means for long-term disposal.","PeriodicalId":7345,"journal":{"name":"Advances in Materials Science and Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2008/238736","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64164551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The polycrystalline sample of Ba3V2O8 was prepared by a high-temperature solid-state reaction technique. The effect of temperature on impedance parameters was studied using an impedance analyzer in a wide frequency range (102-106 Hz). The real and imaginary parts of complex impedance trace semicircles in the complex plane. The temperature-dependent plots reveal the presence of both bulk and grain boundary effects above 125∘C. The bulk resistance of the material decreases with rise in temperature. This exhibits a typical negative temperature coefficient of resistance (NTCR) behavior of the material. The modulus analysis suggests a possible hopping mechanism for electrical transport processes of the material. The nature of variation of dc conductivity suggests the Arrhenius type of electrical conductivity.
{"title":"Complex Impedance Spectroscopic Properties of BaVO Ceramics","authors":"P. Khatri, B. Behera, V. Srinivas, R. Choudhary","doi":"10.1155/2008/746256","DOIUrl":"https://doi.org/10.1155/2008/746256","url":null,"abstract":"The polycrystalline sample of Ba3V2O8 was prepared by a high-temperature solid-state reaction technique. The effect of temperature on impedance parameters was studied using an impedance analyzer in a wide frequency range (102-106 Hz). The real and imaginary parts of complex impedance trace semicircles in the complex plane. The temperature-dependent plots reveal the presence of both bulk and grain boundary effects above 125∘C. The bulk resistance of the material decreases with rise in temperature. This exhibits a typical negative temperature coefficient of resistance (NTCR) behavior of the material. The modulus analysis suggests a possible hopping mechanism for electrical transport processes of the material. The nature of variation of dc conductivity suggests the Arrhenius type of electrical conductivity.","PeriodicalId":7345,"journal":{"name":"Advances in Materials Science and Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2008/746256","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64179287","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This study concentrated on the role of particle size of silicon carbide (SiC) on dimensional stability of aluminum. Three kinds of Al/SiC composite reinforced with different SiC particle sizes (25 𝜇m, 5 𝜇m, and 70 nm) were produced using a high-energy ball mill. The standard samples were fabricated using powder metallurgy method. The samples were heated from room temperature up to 500∘C in a dilatometer at different heating rates, that is, 10, 30, 40, and 60∘C/min. The results showed that for all materials, there was an increase in length change as temperature increased and the temperature sensitivity of aluminum decreased in the presence of both micro- and nanosized silicon carbide. At the same condition, dimensional stability of Al/SiC nanocomposite was better than conventional Al/SiC composites.
{"title":"Influence of Nanosized Silicon Carbide on Dimensional Stability of Al/SiC Nanocomposite","authors":"Seyed Mojtaba Zebarjad, S. Sajjadi, E. Karimi","doi":"10.1155/2008/835746","DOIUrl":"https://doi.org/10.1155/2008/835746","url":null,"abstract":"This study concentrated on the role of particle size of silicon carbide (SiC) on dimensional stability of aluminum. Three kinds of Al/SiC composite reinforced with different SiC particle sizes (25 𝜇m, 5 𝜇m, and 70 nm) were produced using a high-energy ball mill. The standard samples were fabricated using powder metallurgy method. The samples were heated from room temperature up to 500∘C in a dilatometer at different heating rates, that is, 10, 30, 40, and 60∘C/min. The results showed that for all materials, there was an increase in length change as temperature increased and the temperature sensitivity of aluminum decreased in the presence of both micro- and nanosized silicon carbide. At the same condition, dimensional stability of Al/SiC nanocomposite was better than conventional Al/SiC composites.","PeriodicalId":7345,"journal":{"name":"Advances in Materials Science and Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2008/835746","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64181317","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The goal of this research is to evaluate the potential of Raman spectroscopy as a method of condition assessment for carbon fiber composite materials used in high performance situations such as composite overwrapped pressure vessels (COPVs). There are currently limited nondestructive evaluation (NDE) technologies to evaluate these composite materials in situ. Variations in elastic strain in the composite material can manifest from degradation or damage, and as such could provide a tool for condition assessment. The characterization of active Raman bands and the strain sensitivity of these bands for commercially available carbon fibers are reported.
{"title":"Raman Spectroscopy for the Nondestructive Testing of Carbon Fiber","authors":"G. Washer, Blum Jr.F.","doi":"10.1155/2008/693207","DOIUrl":"https://doi.org/10.1155/2008/693207","url":null,"abstract":"The goal of this research is to evaluate the potential of Raman spectroscopy as a method of condition assessment for carbon fiber composite materials used in high performance situations such as composite overwrapped pressure vessels (COPVs). There are currently limited nondestructive evaluation (NDE) technologies to evaluate these composite materials in situ. Variations in elastic strain in the composite material can manifest from degradation or damage, and as such could provide a tool for condition assessment. The characterization of active Raman bands and the strain sensitivity of these bands for commercially available carbon fibers are reported.","PeriodicalId":7345,"journal":{"name":"Advances in Materials Science and Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2008/693207","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64177813","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The blends of acrylonitrile butadiene styrene (ABS) polymer and liquid crystalline polymer (LCP) were prepared using a melt-blending technique in presence and absence of different types of nanosilica. The effect of Zn
{"title":"Effect of Compatibilizers on the Morphological Properties of ABS and LCP Blends","authors":"T. Das, K. Pal, B. Adhikari, C. Das","doi":"10.1155/2007/18160","DOIUrl":"https://doi.org/10.1155/2007/18160","url":null,"abstract":"The blends of acrylonitrile butadiene styrene (ABS) polymer and liquid crystalline polymer (LCP) were prepared using a melt-blending technique in presence and absence of different types of nanosilica. The effect of Zn","PeriodicalId":7345,"journal":{"name":"Advances in Materials Science and Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2007-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2007/18160","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64139867","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. Sorescu, L. Diamandescu, A. Sanns, D. Proch, J. Wood, V. Teodorescu
The x TiO 2 - ( 1 − x ) α - Fe 2 O 3 ceramic nanoparticles system has been obtained by mechanochemical activation for x = 0.1 and 0.5 and for ball milling times ranging from 2 to 12 hours. Structural and morphological characteristics of the anatase-doped hematite system were investigated by X-ray diffraction (XRD), Mossbauer spectroscopy, and transmission electron microscopy (TEM) combined with electron diffraction (ED). In the XRD patterns, we could evidence the dissolution of anatase in hematite, more pronounced for x = 0.1. The Rietveld structure of the XRD patterns yielded the dependence of the particle size and lattice constants on the amount x of Ti substitutions and as function of the ball milling time. For x = 0.1, we observed line broadening of the Mossbauer resonances and corresponding fit with several subspectra. For x = 0.5, it can be observed that the central doublet corresponding to superparamagnetic particles becomes more prominent. The ball milling route allowed us to reach nanometric particle dimensions, which would make the materials very promising for catalytic and gas sensing applications.
{"title":"Synthesis and Characterization of Ceramic Nanoparticles System Based on Anatase-Doped Hematite","authors":"M. Sorescu, L. Diamandescu, A. Sanns, D. Proch, J. Wood, V. Teodorescu","doi":"10.1155/2007/48962","DOIUrl":"https://doi.org/10.1155/2007/48962","url":null,"abstract":"The x TiO 2 - ( 1 − x ) α - Fe 2 O 3 ceramic nanoparticles system has been obtained by \u0000mechanochemical activation for x = 0.1 and 0.5 and \u0000for ball milling times ranging from 2 to 12 hours. \u0000Structural and morphological characteristics of the anatase-doped \u0000hematite system were investigated by X-ray diffraction (XRD), \u0000Mossbauer spectroscopy, and transmission electron microscopy \u0000(TEM) combined with electron diffraction (ED). In the XRD \u0000patterns, we could evidence the dissolution of anatase in \u0000hematite, more pronounced for x = 0.1. The Rietveld \u0000structure of the XRD patterns yielded the dependence of the \u0000particle size and lattice constants on the amount x \u0000of Ti substitutions and as function of the ball milling time. For \u0000x = 0.1, we observed line broadening of the \u0000Mossbauer resonances and corresponding fit with several \u0000subspectra. For x = 0.5, it can be observed that the \u0000central doublet corresponding to superparamagnetic particles \u0000becomes more prominent. The ball milling route allowed us to reach \u0000nanometric particle dimensions, which would make the materials \u0000very promising for catalytic and gas sensing applications.","PeriodicalId":7345,"journal":{"name":"Advances in Materials Science and Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2007-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2007/48962","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64150830","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Wear of a glass-ceramic produced through controlled crystallization of a glass in the MgO-CaO-SiO2-P2O5-F system has been evaluated and compared to various commercial dental ceramics including IPS Empress 2, Cergo Pressable Ceramic, Cerco Ceram, and Super porcelain EX-3. Wear tests were performed in accord with the ASTM G99 for wear testing with a pin-on-disk apparatus. The friction coefficient and specific wear rate of the materials investigated were determined at a load of 10 N and at ambient laboratory conditions. Microhardness of the materials was also measured to elucidate the appropriateness of these materials for dental applications.
{"title":"Wear of MgO-CaO-SiO2-P2O5-F-Based Glass Ceramics Compared to Selected Dental Ceramics","authors":"Jongee Park, G. Pekkan, A. Ozturk","doi":"10.1155/2007/69897","DOIUrl":"https://doi.org/10.1155/2007/69897","url":null,"abstract":"Wear of a glass-ceramic produced through controlled crystallization of a glass in the MgO-CaO-SiO2-P2O5-F system has been evaluated and compared to various commercial dental ceramics including IPS Empress 2, Cergo Pressable Ceramic, Cerco Ceram, and Super porcelain EX-3. Wear tests were performed in accord with the ASTM G99 for wear testing with a pin-on-disk apparatus. The friction coefficient and specific wear rate of the materials investigated were determined at a load of 10 N and at ambient laboratory conditions. Microhardness of the materials was also measured to elucidate the appropriateness of these materials for dental applications.","PeriodicalId":7345,"journal":{"name":"Advances in Materials Science and Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2007-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2007/69897","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64155150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In recent years, significant effort has been put in the enhancement of our understanding of the physics and mechanics of moving objects under contact. Developed theoretical models can not fully account for the observed frictional behaviour of materials due to the lack of understanding of the interaction processes which occur at the microscopic level. In this paper, an analytical contact model will be described and its application to a titanium alloy will be presented. Conclusions will be drawn on the ability of this model to describe different friction regimes. The inclusion of additional factors which impact on frictional behaviour will be discussed, as well as the derivation of constitutive equations and their utilisation in continuum models.
{"title":"An Analytical Description of the Frictional Behaviour of a Titanium Alloy","authors":"N. Christakis, A. Vairis","doi":"10.1155/2007/92170","DOIUrl":"https://doi.org/10.1155/2007/92170","url":null,"abstract":"In recent years, significant effort has been put in the enhancement of our understanding of the physics and mechanics of moving objects under contact. Developed theoretical models can not fully account for the observed frictional behaviour of materials due to the lack of understanding of the interaction processes which occur at the microscopic level. In this paper, an analytical contact model will be described and its application to a titanium alloy will be presented. Conclusions will be drawn on the ability of this model to describe different friction regimes. The inclusion of additional factors which impact on frictional behaviour will be discussed, as well as the derivation of constitutive equations and their utilisation in continuum models.","PeriodicalId":7345,"journal":{"name":"Advances in Materials Science and Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2007-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2007/92170","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64160116","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The II-VI polycrystalline semiconducting materials have come under increased scrutiny because of their wide use in the cost reduction of devices for photovoltaic applications. Cd 1 − X Zn X Te is one of the II-VI ternary semiconductor materials whose bandgap can be tailored to any value between 1.48–2.26 eV as X varies from 0 to 1. It is promising material for high-efficiency solar cells, switching, and other optoelectronic devices. Polycrystalline thin film of Cd 1 − X Zn X Te with variable composition ( 0 ≤ X ≤ 1 ) has been deposited on ultraclean glass substrates by screen printing method followed by sintering process. The optical and structural properties of Cd 1 − X Zn X Te thin films have been examined. The optical bandgap of these films is studied using reflection spectra in wavelength range of 350–900 nm by using double beam spectrophotometer. The structure of sample was determined from X-ray diffraction patterns. The films were polycrystalline in nature having wurtzite (Hexagonal) structure over the whole range studied. The lattice parameters vary almost linearly with the composition parameter X , following Vegard's law. Sintering is a very simple and viable method compared to other cost-intensive methods. The results of the present investigation will be useful in characterizing the material CdZnTe for its applications in photovoltaics.
II-VI型多晶半导体材料因其在降低光电器件成本方面的广泛应用而受到越来越多的关注。Cd 1−X Zn X Te是一种II-VI型三元半导体材料，当X从0到1变化时，其带隙可以在1.48 ~ 2.26 eV之间任意调整。它是高效太阳能电池、开关和其他光电器件的有前途的材料。采用丝网印刷法和烧结工艺在超净玻璃基板上沉积了可变成分(0≤X≤1)的Cd 1−X Zn X Te多晶薄膜。研究了Cd 1−X Zn X Te薄膜的光学性质和结构性质。利用双光束分光光度计在350 ~ 900 nm波长范围内的反射光谱研究了这些薄膜的光学带隙。通过x射线衍射图确定了样品的结构。在整个研究范围内，薄膜本质上是多晶的，具有纤锌矿(六角形)结构。晶格参数与组成参数X几乎呈线性变化，遵循维加德定律。与其他成本密集的方法相比，烧结是一种非常简单可行的方法。本研究结果将有助于表征CdZnTe材料在光伏领域的应用。
{"title":"Growth and Characterization of Cd1−XZnXTe-Sintered Films","authors":"V. Kumar, G. S. Sandhu, T. Sharma, M. Hussain","doi":"10.1155/2007/63702","DOIUrl":"https://doi.org/10.1155/2007/63702","url":null,"abstract":"The II-VI polycrystalline semiconducting materials have come under increased scrutiny because of their wide use in the cost reduction of devices for photovoltaic applications. Cd 1 − X Zn X Te is one of the II-VI ternary semiconductor materials whose bandgap can be tailored to any value between 1.48–2.26 eV as X varies from 0 to 1. It is promising material for high-efficiency solar cells, switching, and other optoelectronic devices. Polycrystalline thin film of Cd 1 − X Zn X Te with variable composition \u0000( 0 ≤ X ≤ 1 ) has been deposited on ultraclean glass substrates by screen printing method followed by sintering process. The optical and structural properties of Cd 1 − X Zn X Te thin films have been examined. The optical bandgap of these films is studied using reflection spectra in wavelength range of 350–900 nm by using double beam spectrophotometer. The structure of sample was determined from X-ray diffraction patterns. The films were polycrystalline in nature having wurtzite (Hexagonal) structure over the whole range studied. The lattice parameters vary almost linearly with the composition parameter X , following Vegard's law. \u0000Sintering is a very simple and viable method compared to other cost-intensive methods. The results of the present investigation will be useful in characterizing the material CdZnTe for its applications in photovoltaics.","PeriodicalId":7345,"journal":{"name":"Advances in Materials Science and Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2007-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2007/63702","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64153817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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