发布求助
文献互助 智能选刊 最新文献

Journal of Ovonic Research最新文献

筛选
英文 中文
Adsorption kinetics behavior of MB dye on CaO nanosheets MB 染料在 CaO 纳米片上的吸附动力学行为
IF 1 4区 材料科学
Journal of Ovonic Research Pub Date : 2024-02-01 DOI: 10.15251/jor.2024.201.93
A. Modwi, M. A. Aissa, A. Alakhras, H. Idriss
{"title":"Adsorption kinetics behavior of MB dye on CaO nanosheets","authors":"A. Modwi, M. A. Aissa, A. Alakhras, H. Idriss","doi":"10.15251/jor.2024.201.93","DOIUrl":"https://doi.org/10.15251/jor.2024.201.93","url":null,"abstract":"The work reported herein demonstrates the fabrication of CaO nanosheets employing a thermal decomposition method. The obtained CaO nanosheets were characterized using TEM, BET, XRD, EDX, and FTIR instruments. Moreover, the effect of initial dye concentration and pH on MB removal by CaO nanosheets was studied. The result showed that the nanoparticles have sizes around 100 nm, and the CaO nanosheets have an average diameter of 50 nm. Meanwhile, the average pore diameter and surface area of CaO are 15.847 Å and 5.881 m2. g−1 , respectively. Numerical models based on Temkin, Freundlich, and Langmuir were applied to adsorption data to better understand the MB dye adsorption onto CaO nanoparticles. The sorption findings demonstrated a stronger fit with the Temkin model (R2 = 0.983) compared to the Freundlich model (R2 = 0.947) and Langmuir model (R2 = 0.968). The maximum adsorption capacity of MB on the CaO nanoparticles is 688.01 mg/g. The investigation determined that the adsorption kinetics adhered to the Pseudo-second-order kinetic model(R2 =0.982).","PeriodicalId":54394,"journal":{"name":"Journal of Ovonic Research","volume":"324 5","pages":""},"PeriodicalIF":1.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139877114","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}
引用次数: 0
Enhanced photovoltaic performance of dye sensitized solar cell based on nanocomposites of zinc oxide photoanode 基于氧化锌光阳极纳米复合材料的染料敏化太阳能电池光电性能的增强
IF 1 4区 材料科学
Journal of Ovonic Research Pub Date : 2024-02-01 DOI: 10.15251/jor.2024.201.85
A. V. Balan, P. Gopinath, V. Radhika
{"title":"Enhanced photovoltaic performance of dye sensitized solar cell based on nanocomposites of zinc oxide photoanode","authors":"A. V. Balan, P. Gopinath, V. Radhika","doi":"10.15251/jor.2024.201.85","DOIUrl":"https://doi.org/10.15251/jor.2024.201.85","url":null,"abstract":"XRD and SEM images of ZnO nanoparticles prepared by the precipitation method allow investigation of their morphology and morphological refinement. No contamination was observed in the XRD spectrum and SEM confirmed that the nanoparticles were wellcoordinated ZnO at 30 nm size. UV-Vis spectroscopy was used to tune the optical properties and they appeared not to be fixed at 3.34 eV. The band gap of semiconductor materials makes them competitive for solar cell applications. The O-rich stoichiometry measured by XPS may be a direct result of zinc deficiency. Therefore, ZnO nanoparticles were prepared to fabricate secretory solar cells (DSSCs). From the perspective of J-V, open circuit voltage (Voc), barrier thickness (Jsc), fill factor (FF) and efficiency (η) were not chosen as much as possible and the quality was calculated as 0.65V, 6.26mA. , 62.2% and 1.96% respectively at 100mW/cm2 .","PeriodicalId":54394,"journal":{"name":"Journal of Ovonic Research","volume":"8 3","pages":""},"PeriodicalIF":1.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139887467","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}
引用次数: 0
Adsorption kinetics behavior of MB dye on CaO nanosheets MB 染料在 CaO 纳米片上的吸附动力学行为
IF 1 4区 材料科学
Journal of Ovonic Research Pub Date : 2024-02-01 DOI: 10.15251/jor.2024.201.93
A. Modwi, M. A. Aissa, A. Alakhras, H. Idriss
{"title":"Adsorption kinetics behavior of MB dye on CaO nanosheets","authors":"A. Modwi, M. A. Aissa, A. Alakhras, H. Idriss","doi":"10.15251/jor.2024.201.93","DOIUrl":"https://doi.org/10.15251/jor.2024.201.93","url":null,"abstract":"The work reported herein demonstrates the fabrication of CaO nanosheets employing a thermal decomposition method. The obtained CaO nanosheets were characterized using TEM, BET, XRD, EDX, and FTIR instruments. Moreover, the effect of initial dye concentration and pH on MB removal by CaO nanosheets was studied. The result showed that the nanoparticles have sizes around 100 nm, and the CaO nanosheets have an average diameter of 50 nm. Meanwhile, the average pore diameter and surface area of CaO are 15.847 Å and 5.881 m2. g−1 , respectively. Numerical models based on Temkin, Freundlich, and Langmuir were applied to adsorption data to better understand the MB dye adsorption onto CaO nanoparticles. The sorption findings demonstrated a stronger fit with the Temkin model (R2 = 0.983) compared to the Freundlich model (R2 = 0.947) and Langmuir model (R2 = 0.968). The maximum adsorption capacity of MB on the CaO nanoparticles is 688.01 mg/g. The investigation determined that the adsorption kinetics adhered to the Pseudo-second-order kinetic model(R2 =0.982).","PeriodicalId":54394,"journal":{"name":"Journal of Ovonic Research","volume":"19 3","pages":""},"PeriodicalIF":1.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139817129","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}
引用次数: 0
Enhanced photocatalytic degradation of pure and Cu-doped ZnO nanoparticles prepared under Co-precipitation method 共沉淀法制备的纯 ZnO 纳米粒子和掺铜 ZnO 纳米粒子的光催化降解能力增强
IF 1 4区 材料科学
Journal of Ovonic Research Pub Date : 2024-02-01 DOI: 10.15251/jor.2024.201.103
V. Balasubramanian, R. Jeyachitra, T. S. Senthil, S. Kalpana
{"title":"Enhanced photocatalytic degradation of pure and Cu-doped ZnO nanoparticles prepared under Co-precipitation method","authors":"V. Balasubramanian, R. Jeyachitra, T. S. Senthil, S. Kalpana","doi":"10.15251/jor.2024.201.103","DOIUrl":"https://doi.org/10.15251/jor.2024.201.103","url":null,"abstract":"The key goal of this study is to innovate the pure and 0.05, 0.10 and 0.15 wt.% of Cudoped ZnO NPs through co-precipitation technique. PXRD pattern shows the hexagonal crystal structure with no any phase impurity were observed for all the synthesized samples. From UV-Vis DRS spectra, band gap was obtained as 3.18, 3.24, 3.29 and 3.33 eV respectively for undoped, Cu-doped ZnO NPs (0.05, 0.10 and 0.15 wt.%). From SEM analysis, the agglomeration of rod-like morphology for pure ZnO NPs, spherical-like morphology for Cu-doped ZnO NPs (0.05 wt.%) and flake-like morphology for Cu-doped ZnO NPs (0.10 wt.%) and flower-like morphology for Cu-doped ZnO NPs (0.15 wt.%). The photocatalytic performance of the synthesized NPs was studied by the dye degradation of Methylene Blue (MB) under UV irradiation. The result exposed that, 0.15 wt.% of Cu-doped ZnO NPs is found to have efficient degradation candidate materials.","PeriodicalId":54394,"journal":{"name":"Journal of Ovonic Research","volume":"84 2","pages":""},"PeriodicalIF":1.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139877041","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}
引用次数: 0
Enhanced photovoltaic performance of dye sensitized solar cell based on nanocomposites of zinc oxide photoanode 基于氧化锌光阳极纳米复合材料的染料敏化太阳能电池光电性能的增强
IF 1 4区 材料科学
Journal of Ovonic Research Pub Date : 2024-02-01 DOI: 10.15251/jor.2024.201.85
A. V. Balan, P. Gopinath, V. Radhika
{"title":"Enhanced photovoltaic performance of dye sensitized solar cell based on nanocomposites of zinc oxide photoanode","authors":"A. V. Balan, P. Gopinath, V. Radhika","doi":"10.15251/jor.2024.201.85","DOIUrl":"https://doi.org/10.15251/jor.2024.201.85","url":null,"abstract":"XRD and SEM images of ZnO nanoparticles prepared by the precipitation method allow investigation of their morphology and morphological refinement. No contamination was observed in the XRD spectrum and SEM confirmed that the nanoparticles were wellcoordinated ZnO at 30 nm size. UV-Vis spectroscopy was used to tune the optical properties and they appeared not to be fixed at 3.34 eV. The band gap of semiconductor materials makes them competitive for solar cell applications. The O-rich stoichiometry measured by XPS may be a direct result of zinc deficiency. Therefore, ZnO nanoparticles were prepared to fabricate secretory solar cells (DSSCs). From the perspective of J-V, open circuit voltage (Voc), barrier thickness (Jsc), fill factor (FF) and efficiency (η) were not chosen as much as possible and the quality was calculated as 0.65V, 6.26mA. , 62.2% and 1.96% respectively at 100mW/cm2 .","PeriodicalId":54394,"journal":{"name":"Journal of Ovonic Research","volume":"26 6","pages":""},"PeriodicalIF":1.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139827647","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}
引用次数: 0
Ionic transport study in [NaNO3]100-x:[Sr(NO3)2]x mixed solid electrolyte system NaNO3]100-x:[Sr(NO3)2]x 混合固体电解质体系中的离子迁移研究
IF 1 4区 材料科学
Journal of Ovonic Research Pub Date : 2023-11-01 DOI: 10.15251/jor.2023.196.643
T.V. Kumar, K. P. Kumar, G. Prathibha, N.H Kumar, B. H. C. Rao
{"title":"Ionic transport study in [NaNO3]100-x:[Sr(NO3)2]x mixed solid electrolyte system","authors":"T.V. Kumar, K. P. Kumar, G. Prathibha, N.H Kumar, B. H. C. Rao","doi":"10.15251/jor.2023.196.643","DOIUrl":"https://doi.org/10.15251/jor.2023.196.643","url":null,"abstract":"Na+ ion-conducting solid electrolyte of sodium nitrate (NaNO3) and Sr(NO3)2 mixed crystals were grown by slow evaporation technique. XRD, FTIR, SEM characterizations and AC, DC conductivities were carried out on the pellets. Conductivity in these mixed solid electrolytes was noticed to increase with increase in m/o Sr(NO3)2 upto 14.68 followed by decrease. The conductivity in 14.68 m/o Sr(NO3)2 is more than one order of magnitude as compared to NaNO3 in the extrinsic region. Ionic transport in these mixed systems is explained.","PeriodicalId":54394,"journal":{"name":"Journal of Ovonic Research","volume":"33 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139303288","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}
引用次数: 0
Efficiency enhancement in SiGe thin film solar cell by a CNT grating structure 利用 CNT 光栅结构提高 SiGe 薄膜太阳能电池的效率
IF 1 4区 材料科学
Journal of Ovonic Research Pub Date : 2023-11-01 DOI: 10.15251/jor.2023.196.631
H. H. Madani, M. R. Shayesteh, M. R. Moslemi
{"title":"Efficiency enhancement in SiGe thin film solar cell by a CNT grating structure","authors":"H. H. Madani, M. R. Shayesteh, M. R. Moslemi","doi":"10.15251/jor.2023.196.631","DOIUrl":"https://doi.org/10.15251/jor.2023.196.631","url":null,"abstract":"In this paper, a new structure of SiGe thin film solar cell using a carbon nanotubes (CNT) grating layer is proposed. CNT grating layer is used which reduces the reflection loss from the surface and maximizing optical absorption in the active layer of the cell. In order to reduce the carrier recombination in the back contact, a GaAs back-surface field (BSF) layer was used. The simulation results show that the efficiency of the proposed structure is 29.32%. Furthermore, we were able to increase the efficiency to 31.3% by optimizing the structural parameters including the depth and number of grating periods.","PeriodicalId":54394,"journal":{"name":"Journal of Ovonic Research","volume":"40 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139304954","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}
引用次数: 0
A study of the efficient approach to introduce two Na ions into a NaVOPO4 matrix and an analysis of the electrochemical performance of NaVOPO4/Na2V(PO4)2 研究将两个 Na 离子引入 NaVOPO4 基质的有效方法，并分析 NaVOPO4/Na2V(PO4)2 的电化学性能
IF 1 4区 材料科学
Journal of Ovonic Research Pub Date : 2023-11-01 DOI: 10.15251/jor.2023.196.673
A. Neelaveni, N. Sivakumar
{"title":"A study of the efficient approach to introduce two Na ions into a NaVOPO4 matrix and an analysis of the electrochemical performance of NaVOPO4/Na2V(PO4)2","authors":"A. Neelaveni, N. Sivakumar","doi":"10.15251/jor.2023.196.673","DOIUrl":"https://doi.org/10.15251/jor.2023.196.673","url":null,"abstract":"In this work, we manufacture NaVOPO4 with the addition of one additional Na ion to enhance the stability and electrochemical formulation utilizing three ways, including sol gel-assisted hydrothermal, pure sol-gel, and solid state reaction methods. The sol-gel aided hydrothermal approach is the most effective way to add more Na ions to the NaVOPO4 matrix out of the three. Due to the presence of carbon content in high temperatures, the alterations of oxygen environment (O (1 &2) sites around the Na and V cause NaVOPO4/ Na2V(PO4)2 (NVP). The traces with high intensity at 17.99o indicates the tetragonal phase of Na2V(PO4)2 in NaVOPO4 and it is concreted by Raman analysis by peak shifting from 884 to 866 cm–1 . The character in Na2V(PO4)2 influences the Na ion intercalation process and yields the specific capacity in a three-electrode system is 0.83mAh/g at the scan rate of 10mV/s.","PeriodicalId":54394,"journal":{"name":"Journal of Ovonic Research","volume":"47 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139296119","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}
引用次数: 0
Support of Cd doping in SnO2 nanoparticles to enhance its thermoelectric parameters 支持在二氧化锡纳米粒子中掺杂镉以提高其热电参数
IF 1 4区 材料科学
Journal of Ovonic Research Pub Date : 2023-11-01 DOI: 10.15251/jor.2023.196.653
N. U. Rehman, A. Hussain, S. M. Ali, J. Ahmad, S. A. Buzdar, K. Mahmood, Z. A. Shah, S. D. Ali, M. A. Shar
{"title":"Support of Cd doping in SnO2 nanoparticles to enhance its thermoelectric parameters","authors":"N. U. Rehman, A. Hussain, S. M. Ali, J. Ahmad, S. A. Buzdar, K. Mahmood, Z. A. Shah, S. D. Ali, M. A. Shar","doi":"10.15251/jor.2023.196.653","DOIUrl":"https://doi.org/10.15251/jor.2023.196.653","url":null,"abstract":"In the present study we have successfully synthesized undoped and Cd doped SnO2 nanoparticles using the Sol-gel method with different concentrations of Cd solutions, and Seebeck coefficient and electrical conductivity have been reported at various temperatures. The structural, morphological, thermoelectric and electrical properties of undoped and doped samples were by XRD, scanning electron microscopy, Raman spectroscopy, Seebeck effect and two point probe electrical measurement. XRD show the rutile tetragonal structure and the enhanced particle size in the range of 18.12 nm to 25.08 nm, and Raman active mode at 479cm-1 , 632cm-1 and 775cm-1 were measured by Raman spectroscopy. Morphology of the nanoparticles by using Scanning electron microscopy have revealed the random spherical shape and cluster formation of these nanoparticles. The maximum value of seebeck coefficient, electrical conductivity and power factor for 6% doped SnO2 samples were found to be -297.92μV/°C, 33.33Ω-1 m-1 and 0.129117 x 106 Wm-1 /°C2 , respectively. These results reveal that the Cd doped tin dioxide (SnO2) nanoparticles can be used as a good candidate for thermoelectric applications.","PeriodicalId":54394,"journal":{"name":"Journal of Ovonic Research","volume":"3 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139295543","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}
引用次数: 0
The concentration factor on the mixture of Ag paste and H3PO4 solution as a dopant paste for contact formation in silicon solar cells 将银浆和 H3PO4 溶液的混合物作为硅太阳能电池触点形成的掺杂浆料的浓度系数
IF 1 4区 材料科学
Journal of Ovonic Research Pub Date : 2023-11-01 DOI: 10.15251/jor.2023.196.681
N. A. M. Sinin, A. R. M. Rais, K. Sopian, M. A. Ibrahim
{"title":"The concentration factor on the mixture of Ag paste and H3PO4 solution as a dopant paste for contact formation in silicon solar cells","authors":"N. A. M. Sinin, A. R. M. Rais, K. Sopian, M. A. Ibrahim","doi":"10.15251/jor.2023.196.681","DOIUrl":"https://doi.org/10.15251/jor.2023.196.681","url":null,"abstract":"Screen printing dopant is a new technique to create emitter regions on solar cells. On top of the emitter region, there will be screen-printed metallic contacts that are commonly used silver as front contact. Both processes are performed in separate procedure which requires two different diffusion process involving a high-temperature process. Silver makes good ohmic contact on both light and heavily doped. A solution is proposed by applying a single step of screen printing and annealing process of Ag and phosphorus acid. Simultaneous annealing of Al, Ag, Ag/P screen-printed pastes form diodes with and without heavily doped phosphorous layers under Ag contacts on n-type and p-type silicon wafers by annealing at a constant temperature of 900℃ while varying annealing time from 10-40 seconds at a 10-second interval. The cross-section image of 5% and 10% of Ag/P was measured by using FESEM with EDX report has identified the presence of phosphorus in the Ag/P paste. Dark IV shows an ohmic contact for both p- and n-type. The ability to form the Ag/P paste in the screen-printing process makes it amenable to use as a self-dopant paste process in solar cells.","PeriodicalId":54394,"journal":{"name":"Journal of Ovonic Research","volume":"83 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139296115","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}
引用次数: 0
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信