Journal of Ovonic Research最新文献

Novel synthesis and spectroscopic analysis of gallium oxide doped zinc phosphate glass 掺杂氧化镓的磷酸锌玻璃的新型合成与光谱分析

IF 1 4区材料科学

Journal of Ovonic Research Pub Date : 2024-05-14 DOI: 10.15251/jor.2024.203.295

A. Batool, Z. Hussain, M. I. Din

引用次数: 0

Device simulation and optimization of HTL-free perovskite solar cell with CH3NH3SnBr3 as the absorber layer using solar cell capacitance simulator software 使用太阳能电池电容模拟器软件模拟和优化以 CH3NH3SnBr3 为吸收层的无 HTL 包晶太阳能电池的装置

IF 1 4区材料科学

Journal of Ovonic Research Pub Date : 2024-05-14 DOI: 10.15251/jor.2024.202.245

M. V. Kavitha, C. K. Anjali, K. S. Sudheer

引用次数: 0

Physical and sensing characterization of nanostructured Ag doped TiO2 thin films 纳米结构掺银二氧化钛薄膜的物理和传感表征

IF 1 4区材料科学

Journal of Ovonic Research Pub Date : 2024-05-14 DOI: 10.15251/jor.2024.202.255

M. S. Sada, R. I. Jasim, A. M. Saleh, K. N. Hussein, N. Habubi, S. Chiad

{"title":"Physical and sensing characterization of nanostructured Ag doped TiO2 thin films","authors":"M. S. Sada, R. I. Jasim, A. M. Saleh, K. N. Hussein, N. Habubi, S. Chiad","doi":"10.15251/jor.2024.202.255","DOIUrl":"https://doi.org/10.15251/jor.2024.202.255","url":null,"abstract":"On glass substrates, silver (Ag) doped Titanium dioxide (TiO2) films at varied levels of concentrations (0, 2, and 4) % wt were synthesized by chemical spray pyrolysis (CSP). As per the X-ray diffraction pattern, the only phases present in the sample were anatase and rutile TiO2. Using AFM, it was discovered that the TiO2 thin films were smooth and compact; however, the surface roughness increases as the dopant amount decreases. SEM images display TiO2 films. Surface transformation is evident with uniform spherical nanograins after Ag doping. The optical characteristics of wavelength range (300-900) nm have been investigated using absorbance and transmittance spectra. The results revealed that the films have a 65-75 % transmittance in VIS-NIR spectra for all films. The allowable direct electronic transitions have (3.15-3.25) eV energy gaps. At 250 ppm, the NH3 gas sensor exhibited increased resistance, indicating heightened sensitivity. Sensitivity decreases with concentration increases to 0 %, 2 %, and 4 % of Ag for NH3 gas. Reduction observed: 18.4% to 4.6% (50 ppm), 20.7% to 6.8% (150 ppm), and 25.9% to 8.2% (250 ppm).","PeriodicalId":49156,"journal":{"name":"Journal of Ovonic Research","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2024-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140980892","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

Synthesis of zinc oxide thin films by spray pyrolysis technique 利用喷雾热解技术合成氧化锌薄膜

IF 1 4区材料科学

Journal of Ovonic Research Pub Date : 2024-05-14 DOI: 10.15251/jor.2024.202.267

M. Sudha, A.B. Madhan, E. Geetha, R. Satheeskumar

引用次数: 0

Simulation of sodium diborate glass containing lead and cadmium oxides for radiation shielding applications 模拟含铅和镉氧化物的二硼酸钠玻璃在辐射屏蔽中的应用

IF 1 4区材料科学

Journal of Ovonic Research Pub Date : 2024-05-14 DOI: 10.15251/jor.2024.203.285

M. Damoom, A. Alhawsawi, E. Banoqitah, E. B. Moustafa, O. H. Sallam, A. H. Hammad

引用次数: 0

Effects of composition on the structure, thermal and some physical characteristics of Bi2O3-B2O3-ZnO-SiO2 glasse 成分对 Bi2O3-B2O3-ZnO-SiO2 玻璃的结构、热特性和某些物理特性的影响

IF 1 4区材料科学

Journal of Ovonic Research Pub Date : 2024-05-14 DOI: 10.15251/jor.2024.203.273

Y. Hordieiev, A. Zaichuk

{"title":"Effects of composition on the structure, thermal and some physical characteristics of Bi2O3-B2O3-ZnO-SiO2 glasse","authors":"Y. Hordieiev, A. Zaichuk","doi":"10.15251/jor.2024.203.273","DOIUrl":"https://doi.org/10.15251/jor.2024.203.273","url":null,"abstract":"The influence of composition on the structure, thermal, and some physical characteristics of bismuth borate glasses, formulated as 55Bi2O3–(35-x-y)B2O3–(5+x)ZnO–(5+y)SiO2 (where 0 ≤ x, y ≤ 15 mol%), was investigated. Comprehensive analyses were conducted using techniques such as X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Fourier-Transform Infrared Spectroscopy (FTIR), Differential Thermal Analysis (DTA), and Dilatometry. XRD confirmed the amorphous nature of the glass samples, while FTIR spectroscopy revealed that the glasses are primarily composed of BO4, BO3, BiO6, BiO3, ZnO4, and SiO4 structural units. DTA provided further evidence of the samples' glassy state and insights into key temperatures like glass transition (Tg), crystallization (Tc), and melting (Tm). The study finds that substituting B2O3 with SiO2 increases all characteristic temperatures, whereas replacing it with ZnO decreases Tg and Tc but increases Tm. The maximum thermal stability, indicated by a ΔT of 99°C, was observed in the glass with a 55Bi2O3–20B2O3–20ZnO–5SiO2 composition. Dilatometric measurements showed that the investigated glasses have a high coefficient of thermal expansion (10.0–10.7 ppm/°C) values, a low glass transition temperature (345–376°C), and a low dilatometric softening temperature (364–392°C). Additionally, the density and molar volume of the samples were accurately determined.","PeriodicalId":49156,"journal":{"name":"Journal of Ovonic Research","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2024-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140978489","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

Comparative study on capped SiO2 and TiO2 to improve efficiency in plasmonic solar cell through modified synthesis approach 通过改进合成方法提高等离子太阳能电池效率的二氧化硅和二氧化钛封端的比较研究

IF 1 4区材料科学

Journal of Ovonic Research Pub Date : 2024-01-01 DOI: 10.15251/jor.2024.201.1

P. Sarkar, S. Panda, B. Maji, A. K. Mukhopadhyay

引用次数: 0

Phosphorus deactivation mechanisms by hydrogenation in the n+ emitter region and its effect on defects passivation in n+pp+ poly-silicon solar cells n+ 发射极区域的氢化磷失活机制及其对 n+pp+ 多晶硅太阳能电池缺陷钝化的影响

IF 1 4区材料科学

Journal of Ovonic Research Pub Date : 2024-01-01 DOI: 10.15251/jor.2024.201.45

R. Ouldamer, D. Belfennache, D. Madi, R. Yekhlef, S. Zaiou, Mohamed A. Ali

{"title":"Phosphorus deactivation mechanisms by hydrogenation in the n+ emitter region and its effect on defects passivation in n+pp+ poly-silicon solar cells","authors":"R. Ouldamer, D. Belfennache, D. Madi, R. Yekhlef, S. Zaiou, Mohamed A. Ali","doi":"10.15251/jor.2024.201.45","DOIUrl":"https://doi.org/10.15251/jor.2024.201.45","url":null,"abstract":"Doping level of the n+ emitter region is an essential parameter that controls the performance of the n+ pp+ poly-silicon solar cells. Also, most poly-silicon n+ pp+ solar cell manufacturers apply hydrogenation from the phosphorus emitter n+ side to improve photovoltaic efficiency. Although hydrogen can passivate defects as well as it changes initial phosphorus doping level through phosphorus-hydrogen complex formation. Consequently, phosphorus deactivation can have a harmful effect on photovoltaic efficiency. In this context, the primary purpose of this work is to investigate the phosphorus deactivation in n+ emitter region and its effect on defects passivation of hydrogenated n+ pp+ poly-silicon solar cells. To do this, hydrogenation is performed by microwave plasma discharge involving an electron cyclotron resonance system. Besides, hydrogen passivates defects in poly-silicon, at the same time it deactivates phosphorus. For this reason, we have chosen to separate these simultaneous effects. So, we performed phosphorus deactivation on Schottky diodes-based mono-silicon, while defect passivation was operated in n+ pp+ poly-silicon solar cells. Our results reveal that hydrogen effectively deactivates phosphorus dopant. This effect is deeper in Schottky diodes with low initial phosphorus doping level where hydrogen diffuses easily in the bulk. This behavior is clearly revealed in open circuit-voltage values (Voc) measured on n+ pp+ samples. In fact, solar cells with low phosphorus concentration in n+ region revealed 319 mV compared to 230 mV for high doping level. Also, all n+ pp+ poly-silicon solar cells show a saturation of Voc at high microwave plasma power. Reasons for such case were explained and discussed in detail.","PeriodicalId":49156,"journal":{"name":"Journal of Ovonic Research","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140522507","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

Investigation of alkaline earth element substituted Lanthanum Ferrite nanoparticles and it’s characterization 碱土元素替代物镧系铁氧体纳米粒子的研究及其特性分析

IF 1 4区材料科学

Journal of Ovonic Research Pub Date : 2024-01-01 DOI: 10.15251/jor.2024.201.35

S. Saseetha, M. Nagarajan, S. Subha, K. A. Rani, S. C. Vella Durai

引用次数: 0

Molecular-dynamics modeling of structural stability of MAPbX3 (X=I-, CL-, BR-) as solar cells elements 太阳能电池元件 MAPbX3（X=I-、CL-、BR-）结构稳定性的分子动力学建模

IF 1 4区材料科学

Journal of Ovonic Research Pub Date : 2024-01-01 DOI: 10.15251/jor.2024.201.21

M. Husenzoda, L. Gahramanli

引用次数: 0