Materials Science and Engineering: B最新文献_第3页

Synthesis and characterization of transition metals (Mn, Fe, Co, Ni) doped tin oxide for magnetic and antimicrobial studies 磁性和抗菌过渡金属(Mn, Fe, Co, Ni)掺杂氧化锡的合成与表征

Materials Science and Engineering: B Pub Date : 2023-11-26 DOI: 10.1016/j.mseb.2023.117047

T. Amutha, M. Rameshbabu, S. Sasi Florence, G. Ramalingam, S. Muthupandi, K. Prabha

{"title":"Synthesis and characterization of transition metals (Mn, Fe, Co, Ni) doped tin oxide for magnetic and antimicrobial studies","authors":"T. Amutha, M. Rameshbabu, S. Sasi Florence, G. Ramalingam, S. Muthupandi, K. Prabha","doi":"10.1016/j.mseb.2023.117047","DOIUrl":"https://doi.org/10.1016/j.mseb.2023.117047","url":null,"abstract":"Dilute magnetic semiconductor oxides (DMSOs) are attractive prospects for improved charge and spin degrees of freedom control. The current research presents an overview of the structural analysis and magnetic characteristics of DMSOs based on binary metal oxide nanomaterials with various ferromagnetic or paramagnetic dopants, such as Mn, Fe, Co, and Ni, which display increased ferromagnetic behaviour at ambient temperature. The co-precipitation approach was used to create nanoparticle samples of pure SnO2, Sn0.97Mn0.03O2, Sn0.97Fe0.03O2, Sn0.97Co0.03O2, and Sn0.97Ni0.03O2. The emission spectra for the high, wide emission band are 366 nm and 655 nm. Room temperature magnetic hysteresis loops for Mn, Fe, and Ni-doped SnO2 indicate ferromagnetic behaviour when compared to pure and Co-doped SnO2, with Sn0.97Mn0.03O2, Sn0.97Fe0.07O2, and Sn0.97Ni0.03O2 samples exhibiting increased coercivity and retentivity. The antibacterial activity of pure SnO2, Sn0.97Mn0.03O2, Sn0.97Fe0.03O2, Sn0.97Co0.03O2, and Sn0.97Ni0.03O2 nanoparticles was determined.","PeriodicalId":501486,"journal":{"name":"Materials Science and Engineering: B","volume":"109 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138535613","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Numerical simulation of highly efficient Cs2AgInBr6-based double perovskite solar cell using SCAPS 1-D 基于SCAPS 1-D的高效cs2aginbr6双钙钛矿太阳能电池的数值模拟

Materials Science and Engineering: B Pub Date : 2023-11-26 DOI: 10.1016/j.mseb.2023.117041

Vishal Deswal, Shubhda Kaushik, Rahul Kundara, Sarita Baghel

引用次数: 0

In2O3-based thin-film transistors with a (400) polar surface for CO2 gas detection at 150 °C 具有(400)极性表面的in2o3薄膜晶体管，用于150°C下的CO2气体检测

Materials Science and Engineering: B Pub Date : 2023-11-26 DOI: 10.1016/j.mseb.2023.117034

Ayumu Nodera, Shinya Aikawa

{"title":"In2O3-based thin-film transistors with a (400) polar surface for CO2 gas detection at 150 °C","authors":"Ayumu Nodera, Shinya Aikawa","doi":"10.1016/j.mseb.2023.117034","DOIUrl":"https://doi.org/10.1016/j.mseb.2023.117034","url":null,"abstract":"Because of increasing demand for CO2 detection, CO2 sensors capable of low-temperature operation are desired. However, conventional oxide semiconductor sensors still require high operating temperatures. In this study, we fabricated a CO2 sensor that can operate at 150 °C. The sensor is based on an open-channel-type thin-film transistor (TFT) structure with an In2O3(4 0 0) polar plane as a channel. Because the In2O3(4 0 0) surface is polar, many OH groups are adsorbed onto the as-prepared surface. When CO2 gas is introduced, CO2 molecules react with the OH groups and the TFT characteristics change. As a result, CO2 can be detected with a sensitivity 2.9 times greater than that under an inert N2 atmosphere despite the operating temperature of only 150 °C. In a TFT with nonpolar In2O3(2 2 2) planes, the sensitivity remains at 1.3 times. We therefore believe that TFTs fabricated with the polar surface of an oxide semiconductor are useful for gas-sensing applications.","PeriodicalId":501486,"journal":{"name":"Materials Science and Engineering: B","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138535617","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of periodically varying chirped AlxInyGa(1-x-y)N/ Al0.70Ga0.30N Super-Lattice based electron blocking region for nearly droop free UV-C LEDs 周期变化啁啾AlxInyGa(1-x-y)N/ Al0.70Ga0.30N超晶格电子阻挡区对近无下垂UV-C led的影响

Materials Science and Engineering: B Pub Date : 2023-11-25 DOI: 10.1016/j.mseb.2023.117048

Indrani Mazumder, Kashish Sapra, Ashok Chauhan, Manish Mathew, Kuldip Singh

{"title":"Effect of periodically varying chirped AlxInyGa(1-x-y)N/ Al0.70Ga0.30N Super-Lattice based electron blocking region for nearly droop free UV-C LEDs","authors":"Indrani Mazumder, Kashish Sapra, Ashok Chauhan, Manish Mathew, Kuldip Singh","doi":"10.1016/j.mseb.2023.117048","DOIUrl":"https://doi.org/10.1016/j.mseb.2023.117048","url":null,"abstract":"A SLs quaternary nitride alloy-based UV-C LED with a uniquely designed electron blocking region is proposed in this article. At 200 A/cm2 current density, the proposed design has maximum IQE, ∼121% better than the reference design. Additionally, less than 1% efficiency droop is observed in the proposed design. Due to strain compensation offered by the periodically varying and chirped SLs AlaInbGa(1-a-b)N/ AlcIndGa(1-c-d)N/ AleInfGa(1-e-f)N/ AlgInhGa(1-g-h)N/ AliInjGa(1-i-j)N/ Al0.70Ga0.30N electron blocking region, there is no abrupt potential barrier present, which makes it possible for hole injection in the active region to increase and hence improve the LED performance. The substantial improvement in the IQE is attributable to the proposed structure's enhancement in the carrier wave function overlap by 30%.","PeriodicalId":501486,"journal":{"name":"Materials Science and Engineering: B","volume":"2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138535611","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of La3+ doping on structural, magnetic and LPG gas-sensing properties of Mg-Zn nano-ferrites La3+掺杂对Mg-Zn纳米铁氧体结构、磁性和LPG气敏性能的影响

Materials Science and Engineering: B Pub Date : 2023-11-25 DOI: 10.1016/j.mseb.2023.117029

Bindhyabasinee Mishra, Jyotirmayee Nanda, Subhra S. Brahma, K.J. Sankaran, R. Sakthivel, S. Ghadei, S. Suman

{"title":"Effect of La3+ doping on structural, magnetic and LPG gas-sensing properties of Mg-Zn nano-ferrites","authors":"Bindhyabasinee Mishra, Jyotirmayee Nanda, Subhra S. Brahma, K.J. Sankaran, R. Sakthivel, S. Ghadei, S. Suman","doi":"10.1016/j.mseb.2023.117029","DOIUrl":"https://doi.org/10.1016/j.mseb.2023.117029","url":null,"abstract":"A series of polycrystalline mixed spinel ferrites, Mg0.5Zn0.5LaxFe2-xO4 (x = 0, 0.025, 0.05, 0.075, 0.1) were synthesized by hydrothermal method, where NaBH4 was a reductant. The Rietveld refinement analysis demonstrated the La3+ occupancy in A and B positions. FESEM and HRTEM have shown nearly spherical nanoparticles with an average size of 7 nm. The existence of all the component elements were confirmed by EDS and XPS studies. Raman analysis have shown slight blue shift with higher La3+ concentration. These nano-ferrites were noticed to behave ferromagnetically, with small remanent magnetization. The nano-ferrites were tested for the LPG sensing, where the sensor response was understood by proposing the charge carrier (Fe2+ and Fe3+) hopping mechanism. The sensor response (%) of the sample (x = 5%) at 500 ppm exhibited highest value ∼36, as compared to sample (x = 0%). To conclude, Mg0.5Zn0.5La0.05Fe1.95O4 showed better response and recovery time, rather than other spinel ferrites.","PeriodicalId":501486,"journal":{"name":"Materials Science and Engineering: B","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138535609","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pt Co-catalyst nanolayer on nanostructured V-doped Fe2O3 for boosting photoelectrochemical water oxidation 纳米结构v掺杂Fe2O3上的Pt助催化剂纳米层促进光电化学水氧化

Materials Science and Engineering: B Pub Date : 2023-11-25 DOI: 10.1016/j.mseb.2023.117027

Hardy Shuwanto, Hairus Abdullah, Young Ku, Jenni Lie

引用次数: 0

Review on efficient calcium aluminate-based phosphors prepared by combustion synthesis technique 燃烧合成高效铝酸钙基荧光粉的研究进展

Materials Science and Engineering: B Pub Date : 2023-11-24 DOI: 10.1016/j.mseb.2023.117006

Rajashree Panda, Mitrabhanu Behera, R. Arun Kumar, Dhananjay Joshi

{"title":"Review on efficient calcium aluminate-based phosphors prepared by combustion synthesis technique","authors":"Rajashree Panda, Mitrabhanu Behera, R. Arun Kumar, Dhananjay Joshi","doi":"10.1016/j.mseb.2023.117006","DOIUrl":"https://doi.org/10.1016/j.mseb.2023.117006","url":null,"abstract":"Rare earth doped aluminate-based phosphors are being preferred as efficient luminescent materials over sulfide-based phosphors. Present focus is to utilize unique luminescence features of lanthanide-based materials for multidisciplinary research and inventive applications. The growing research interest in aluminate-based phosphors over the past years has headed to the achievement in the enhancement in their long-lasting phosphorescence, phosphorescence efficiencies. Combustion synthesis route is a proficient technique due to the easier process, self-propagation ability, less time-consuming and cost effective as compared with many other routes for preparing nano-phosphor. In this article, our objective is to elaborate the uniqueness of combustion synthesis route for the preparation of phosphor materials composed of calcium aluminate (CaAl2O4). The combined results of persistence luminescence, luminescence properties of RE ion doped CaAl2O4 phosphor are discussed and critically reviewed. The effect of various dopant to favour the emission of radiation with different colors in the visible spectrum are also narrated.","PeriodicalId":501486,"journal":{"name":"Materials Science and Engineering: B","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138535614","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","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 application of magnetic ferrites (MFe2O4) in the removal of heavy metals from aqueous solutions: An updated review 磁性铁氧体(MFe2O4)的合成及其在水中重金属去除中的应用:最新进展

Materials Science and Engineering: B Pub Date : 2023-11-24 DOI: 10.1016/j.mseb.2023.117024

Younes Zohrabi

引用次数: 0