Journal of Ovonic Research最新文献_第4页

Enhanced resistance to degradation in sprayed perovskite CH3NH3PbI3 induced by the temperature 增强了喷涂钙钛矿CH3NH3PbI3在温度诱导下的抗降解能力

IF 1 4区材料科学

Journal of Ovonic Research Pub Date : 2023-07-05 DOI: 10.15251/jor.2023.193.307

A. Kamarchou, A. Zobeidi, I. Kemerchou, A. Khechekhouche, A. Kaddour, B. Hammadi

引用次数: 0

Structural, morphological, and optical properties of praseodymium and aluminium codoped ZnO nanoparticles 镨和铝共掺杂ZnO纳米颗粒的结构、形态和光学性质

IF 1 4区材料科学

Journal of Ovonic Research Pub Date : 2023-07-05 DOI: 10.15251/jor.2023.194.351

M. S. Viswaksenan, A. Simi, A. Panneeraselvam

引用次数: 0

Study effect of incidence angle on ion implantation in ZnO matrix 研究入射角对ZnO基体中离子注入的影响

IF 1 4区材料科学

Journal of Ovonic Research Pub Date : 2023-07-05 DOI: 10.15251/jor.2023.193.345

H. Aissania, K. Hami, A. Talhi

引用次数: 0

Structural, optical and electrical properties of copper oxide thin films deposited by spray pyrolysis 喷雾热解法制备氧化铜薄膜的结构、光学和电学性能

IF 1 4区材料科学

Journal of Ovonic Research Pub Date : 2023-07-01 DOI: 10.15251/jor.2023.194.369

N. Alouche, B. Boudjema, R. Daira, M. Abdelkader

{"title":"Structural, optical and electrical properties of copper oxide thin films deposited by spray pyrolysis","authors":"N. Alouche, B. Boudjema, R. Daira, M. Abdelkader","doi":"10.15251/jor.2023.194.369","DOIUrl":"https://doi.org/10.15251/jor.2023.194.369","url":null,"abstract":"In this work, we have developed thin layers of CuO by method of pyrolysis spray. The samples developed are obtained from the use of copper chloride precursor CuCl2 with molarity of 0.1 mol/l and a spray number that varies between 25 to 150 spray with a step of 25 spray to see the effect of this parameter on the structural, optical and electrical properties of our material. The structural characterization of the obtained thin layers was done by X-ray diffraction (XDR) and spectroscopy Raman. The optical characterization was done by UV visible spectroscopy and electrical characterization by four points. The XDR has confirmed the crystalline state of our thin layers and the formation of the CuO with a preferential direction according to the plan (002). The Raman spectroscopy allowed us to confirm the presence of a thin layer based on the CuO. The lattice parameters remain mainly constant. The spectra UV visible of films has given a transmission varies between 80% and 40% in visible. The optical gap determined varies between 1.75 eV and 1.2 eV. Electrical characterization shows that the resistivity varied between 3.21KΩ.cm and 1.7KΩ.cm depending on number of spray for ethanol gas sensing applications.","PeriodicalId":54394,"journal":{"name":"Journal of Ovonic Research","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44231274","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

Influence of heat-treatment temperature on structural and electrical properties for BaSrTiO3 compounds 热处理温度对BaSrTiO3化合物结构和电性能的影响

IF 1 4区材料科学

Journal of Ovonic Research Pub Date : 2023-07-01 DOI: 10.15251/jor.2023.194.379

H. A. Gatea, S. Shoja, H. J. Albazoni

引用次数: 0

Thermal annealing effects on the electrical characteristics of alpha particles irradiated MIS device AuTa2O5GaAs 热退火对α粒子辐照MIS器件AuTa2O5GaAs电学特性的影响

IF 1 4区材料科学

Journal of Ovonic Research Pub Date : 2023-07-01 DOI: 10.15251/jor.2023.194.359

S. M. Al-Begg, S. H. Saeed, A. Al-Rawas

{"title":"Thermal annealing effects on the electrical characteristics of alpha particles irradiated MIS device AuTa2O5GaAs","authors":"S. M. Al-Begg, S. H. Saeed, A. Al-Rawas","doi":"10.15251/jor.2023.194.359","DOIUrl":"https://doi.org/10.15251/jor.2023.194.359","url":null,"abstract":"An alpha particle-irradiated MIS device made of AuTa2O5GaAs was used to study how thermal annealing affects the I-V characteristics and how the current changes with annealing temperature, radiation energy, and voltage biassing. The super-gate of the MIS structure was made by using thermal evaporation to build a 1000°A thick layer of gold under a vacuum of about 10-5 torr. At room temperature, the devices were exposed to alpha particles from the radioactive source 226Ra (0.5 Ci) with energies of 5.1, 4, 3, 1.8, and 1.2 MeV for 0–30 minutes. After 30 minutes of annealing at 150, 200, and 300 o C in a vacuum of 10-3 torr, the current-voltage (I-V) characteristics of the irradiation devices were found. During thermal annealing, different results were seen with bias voltages of 0.4, 1, and 2 V and temperatures of 150, 200, and 300 o C. Annealing the device at 150 o C doesn't change how stable it is, but annealing it at 300 o C causes ohmic conduction in the device's properties. The device's current can be fixed best when the device is heated to 200 o C and then cooled. Also, thermal annealing seems to have different effects on the I–V electrical characteristics of the devices depending on the energy of the particles and the voltage biassing.","PeriodicalId":54394,"journal":{"name":"Journal of Ovonic Research","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47687276","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

Structural, optical and magnetic characteristics of iron doped zinc oxide thin films 铁掺杂氧化锌薄膜的结构、光学和磁性

IF 1 4区材料科学

Journal of Ovonic Research Pub Date : 2023-05-01 DOI: 10.15251/jor.2023.193.239

A. Mahmoud, E. Ibrahim, L. Galal, E. R. Shaaban, E. Yousef

{"title":"Structural, optical and magnetic characteristics of iron doped zinc oxide thin films","authors":"A. Mahmoud, E. Ibrahim, L. Galal, E. R. Shaaban, E. Yousef","doi":"10.15251/jor.2023.193.239","DOIUrl":"https://doi.org/10.15251/jor.2023.193.239","url":null,"abstract":"Zn1-xFexO films with x = 0, 5, 10, 15 and 20 at.% were prepared under high vacuum by the electron beam gun evaporation. The impact of Fe doping concentration on the films' structural, optical and magnetic characteristics has been taken into account. The patterns of XRD for all films at various Fe concentrations showed wurtzite-type structures. The results show that the size of nano-films reduces from 24 nm (0%) to 11 nm (0.20%) with elevating Fe content, which is owing to the difference between the ionic radii of Zn and Fe. Peaks associated with the elements to be seen were visible in the XPS spectra of undoped and 10% Fe-doped ZnO nanoparticles produced by the precipitation process: zinc (Zn), iron (Fe), and oxygen (O). The optical constants (n, k) of the Zn1-xFexO films were obtained by the SE measurements by an ellipsometric model, allowing for the verification of the Fe3+ ions in Fe-doped ZnO. With the addition of Fe, the energy band gap decreased from 3.44 eV to 3.28 eV. M-H measurements revealed room-temperature ferromagnetism in Fe-doped ZnO thin film. As the Fe concentration rises, the magnetization increases until it reaches a concentration of 15%, at which point it starts to decrease. This decrease in magnetization was attributable to the spinel phase, which was seen in the XRD spectra. These findings imply that Fe-doped ZnO is a highly suggested material for the creation of spintronic and optoelectronic devices.","PeriodicalId":54394,"journal":{"name":"Journal of Ovonic Research","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44242219","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 and characterization of ferrous manganese tungsten thin films for magnetic MEMS devices 磁性MEMS器件用铁锰钨薄膜的合成与表征

IF 1 4区材料科学

Journal of Ovonic Research Pub Date : 2023-05-01 DOI: 10.15251/jor.2023.193.253

A. Poongodi, N. Thangaraj

引用次数: 0

Electron paramagnetic resonance study of gadoliniumum doped graphene oxide 钆掺杂氧化石墨烯的电子顺磁共振研究

IF 1 4区材料科学

Journal of Ovonic Research Pub Date : 2023-05-01 DOI: 10.15251/jor.2023.193.259

R. G. Abaszadea, A. Mammadov, E. A. Khanmammadova, I. Bayramov, R. A. Namazov, Kh. M. Popal, S. Z. Melikova, R. C. Qasımov, M. Bayramov, N. Babayeva

引用次数: 0

Novel controlling pathway for metallic nanoparticles by laser assisted ion-reduction process 激光辅助离子还原法制备金属纳米颗粒的新控制途径

IF 1 4区材料科学

Journal of Ovonic Research Pub Date : 2023-04-01 DOI: 10.15251/jor.2023.192.219

R. Shlaga, A. Alwan, M. S. Mohammed

{"title":"Novel controlling pathway for metallic nanoparticles by laser assisted ion-reduction process","authors":"R. Shlaga, A. Alwan, M. S. Mohammed","doi":"10.15251/jor.2023.192.219","DOIUrl":"https://doi.org/10.15251/jor.2023.192.219","url":null,"abstract":"In this work, the morphological and plasmonic features of the AgNPs which formed by ion-reduction process was carried out extensively. The application of the laser beam during the ion- reduction process has significant effect in the reconstruction of the formed AgNPs with small dimensions and non-frequent morphologies, according to the laser illumination intensity. For non-illumination process the deposited form of the AgNPs appear aggregated into cluster of layer AgNPs size due to the chemical reaction at Si interface, the AgNPs sizes varied from 0.85 to1.2 µm; while at lower laser intensity of about 250 mW/cm2 the AgNPs sizes varied from 0.1 to 1.0 µm, while at high intensity upto 400 mW/cm2 the AgNPs sizes varied from 0.05 to 0.4 µm. The hot spot dimension for non-illumination process varied from 1 to 11 nm while at low intensity of 250 mW/cm2 the hot spot dimension varied from 1to 8 nm. At high intensity upto 400 mW/cm2 , the hot spot varied from 0.1 to 14 nm. The XRD for the generated Ag nanoparticles / Si nanocrystallites, for non- illumination the grain size about 6.171 nm and SSD about 92.687 m2 /g while at low intensity of 250 mW/cm2 the grain size about 4.759nm and SSD about 120.191 m2 /g. At high intensity of 350 mW/cm2 , the grain size about 2.037nm and SSD about 280.847m2 /g uniform distributed AgNPs with minimum hot spot regions can be realized with 350mW/cm2 laser illumination intensity. This process is considerable as a novel work which can be adopted modification at the plasmonic features of metallic nanoparticles for SERs application.","PeriodicalId":54394,"journal":{"name":"Journal of Ovonic Research","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42552321","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