Ceramics International最新文献

{"title":"Exploring the effects of Mn substitution on structural, morphological and electrical properties of Co0.7Zn0.3Fe2O4 ceramics","authors":"Tuntun Shah ,&nbsp;Biswajit Dalai ,&nbsp;Hari Sankar Mohanty ,&nbsp;Krishnamayee Bhoi ,&nbsp;Bijuni C. Sutar ,&nbsp;Dillip K. Pradhan","doi":"10.1016/j.ceramint.2025.02.152","DOIUrl":"10.1016/j.ceramint.2025.02.152","url":null,"abstract":"<div><div>This report examines the effects of manganese (Mn) substitution on structural, morphological and electrical properties of the sol-gel-fabricated zinc modified cobalt ferrite (Co_0.7Zn_0.3Fe₂O₄) ceramics. Co_0.7Zn_0.3Fe_{(2-<em>y</em>)}Mn_<em>y</em>O₄ (<em>0.05 ≤ y ≤ 0.30</em>) were synthesized employing sol-gel auto-combustion technique. X-ray diffraction (XRD) pattern shows formation of single-phase Co_0.7Zn_0.3Fe_{(2-<em>y</em>)}Mn_<em>y</em>O₄ (CZFMO) without emergence of any impurity phases. XRD patterns were refined by considering Fd-3m space group in a cubic spinel crystal structure which further confirms formation of single phase Co_0.7Zn_0.3Fe_{(2-<em>y</em>)}Mn_<em>y</em>O₄. The average particle size of Co_0.7Zn_0.3Fe_{(2-<em>y</em>)}Mn_<em>y</em>O₄ estimated using Williamson-Hall method, was found to increase from 31.52 nm to 96.55 nm with increasing Mn concentration. Field emission scanning electron microscopy (FESEM) micrographs reveal an even distribution of grain sizes along with existence of minimal amounts of pores across the sample microstructure. The elemental accuracy of these samples was confirmed by EDX characterization. The temperature dependent dielectric properties are studied over wide frequency ranges. Among the prepared compounds, maximum value of dielectric constant is obtained for Co_0.7Zn_0.3Fe_1.75Mn_0.25O₄ composition. The dielectric relaxation behaviour of the non-Debye type was found using complex impedance and complex modulus spectroscopy methods. Nyquist plot is used to investigate the existence of grain and grain boundary involvement to impedance spectra in modified cobalt ferrite samples. Temperature-dependent of AC conductivity (<em>σ</em>_<em>ac</em>) study also suggests the presence of negative temperature coefficient of resistance (NTCR) behaviour in Co_0.7Zn_0.3Fe_{(2-<em>y</em>)}Mn_<em>y</em>O₄ ceramics and follows overlapping large polaron tunnelling (OLPT) conduction mechanism. The Jonscher's power law provides a good fit for AC conductivity spectra of all the compounds. The total resistivity of the synthesized compounds is increased by increasing Mn content. The chosen series of compounds may be considered a viable alternative for the creation of sophisticated electrical gadgets like actuators, microwave applications, telecommunications and electro-optic light valves.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 15","pages":"Pages 19845-19859"},"PeriodicalIF":5.1,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144177553","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Structural design and plasma ablation mechanism of multilayered and gradient YSZ-MoSi2-Mo composite coating on Ta-10W alloy beyond 2100 °C","authors":"Xiangjun Bu ,&nbsp;Pengfei He ,&nbsp;Ping Zhang ,&nbsp;Chuan Sun ,&nbsp;Ximing Duan ,&nbsp;Yue Xing ,&nbsp;Shujun Hu ,&nbsp;Zhenfeng Hu ,&nbsp;Xiubing Liang","doi":"10.1016/j.ceramint.2025.02.154","DOIUrl":"10.1016/j.ceramint.2025.02.154","url":null,"abstract":"<div><div>To improve the high-temperature ablation resistance of Ta-10W alloy as a hot-end component of high-speed craft, a novel multilayered YSZ-MoSi₂-Mo (YMM) gradient coating was designed and prepared using plasma spraying. The coating consisted of a YSZ surface layer (∼250 μm), a MoSi₂-YSZ gradient middle layer (∼150 μm), and a Mo-MoSi₂ bottom layer (∼100 μm). The ablation behavior of the coating was investigated using a plasma flame at 2100 °C, 2200 °C, 2300 °C, and 2400 °C for 300 s, respectively. Results showed that the coating remains intact during plasma ablation at 2100 °C. However, bulging (∼199.2 μm) at the ablation center occurred at 2200 °C, while the depth of the oxygen erosion was about 370 μm. Besides, the Mo-MoSi₂ bottom layers were incompletely oxidized and damaged under all the ablation conditions. This indicates that the YMM coating could effectively protect the Ta-10W alloy at ablation temperatures ranging from 2100 to 2400 °C for 300 s. This excellent ablation resistance of the YMM coating was mainly attributed to the damage resistance from the plasma flame of the YSZ layer as well as the oxygen barrier effect and self-healing effect to cracks of SiO₂ formed from MoSi₂. Besides, the multilayered gradient structure of the coating effectively reduced the mismatch between the coefficient of thermal expansion of the YSZ layer and the Ta-10W alloy.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 15","pages":"Pages 19869-19879"},"PeriodicalIF":5.1,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144177557","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bio fueled synthesis of Cr3+ doped V2O5 nanoparticles: Multifunctional applications in Photonics, Fingerprint visualization and Oxidative damage mitigation","authors":"C.U.Charitha Ganesh ,&nbsp;B.R.Radha Krushna ,&nbsp;I.S. Pruthviraj ,&nbsp;G. Ramakrishna ,&nbsp;S.C. Sharma ,&nbsp;Liza Mohapatra ,&nbsp;U. Premkumar ,&nbsp;R. Anitha ,&nbsp;K. Manjunatha ,&nbsp;Sheng Yun Wu ,&nbsp;V. Shivakumar ,&nbsp;S. Devaraja ,&nbsp;B.K. Das ,&nbsp;H. Nagabhushana","doi":"10.1016/j.ceramint.2025.02.219","DOIUrl":"10.1016/j.ceramint.2025.02.219","url":null,"abstract":"<div><div>A series of un-doped and Cr³⁺ doped V₂O₅ (1–5 mol%) nanoparticles (NPs) were successfully synthesized using a combustion method, employing <em>Gasteria Succulents</em> (<em>G.S.</em>) gel as a bio-based fuel. The orthorhombic crystalline structure of the NPs was verified through Powder X-ray Diffraction (PXRD), while Field Emission Scanning Electron Microscopy (FE-SEM) confirmed their rod-shaped morphology. Under 394 nm excitation, the Cr³⁺ ions within the V₂O₅ matrix exhibited pronounced red emission, attributed to the ²E_g→⁴A_2g electric dipole transition in a strong crystal field environment. Among the samples, V₂O₅:0.03Cr³⁺ NPs demonstrated superior optical characteristics, achieving outstanding color purity (CP) of 99.9 % and an impressive internal quantum efficiency (<em>I</em>_<em>QE</em>) of 78.32 %. These NPs also exhibited excellent thermal stability, retaining 89.36 % of their emission intensity at 420 K, making them viable for photonic applications in high-temperature environments. The V₂O₅:0.03Cr³⁺ NPs showed significant potential in white light-emitting diodes (w-LEDs) fabrication, delivering a correlated color temperature (CCT) of 5389 K, CIE coordinates of (0.3345, 0.3223), and a high color rendering index (CRI) of R_a = 93. Incorporating V₂O₅:0.03Cr³⁺ NPs into a polyvinyl alcohol (PVA) matrix exhibited robust red luminescence under UV-365 nm UV light, highlighting their effectiveness in AC applications. Furthermore, these NPs excelled in latent fingerprints (LFPs) development, offering excellent selectivity and high contrast under UV-365 nm illumination, enabling clear visualization of level I–III fingerprint features. Fingerprints (FPs) recognition and analysis were automated and refined using <em>YOLOv8x</em> software. Additionally, the V₂O₅:0.03Cr³⁺ NPs demonstrated significant biological potential by mitigating oxidative damage from peroxynitrite to proteins, lipids, and endothelial structures, underscoring their utility in addressing chronic endothelial dysfunction.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 15","pages":"Pages 20492-20517"},"PeriodicalIF":5.1,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144177790","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Strengthening mechanism of crack restriction in Fe/Al2O3 cermet made from aluminum dross and red mud by reduction and hot-pressing sintering","authors":"Hanlin Shen ,&nbsp;Bingjie Lou ,&nbsp;Bo Liu ,&nbsp;Junjie Zhang ,&nbsp;Xiaoyan Zhang ,&nbsp;Jun Liu ,&nbsp;Yifan Hu ,&nbsp;Shengen Zhang","doi":"10.1016/j.ceramint.2025.02.167","DOIUrl":"10.1016/j.ceramint.2025.02.167","url":null,"abstract":"<div><div>Industrial solid waste has been a new raw material of ceramic for the low environment effect and cost. However, the ceramic made from the waste possesses a low mechanical property due to the complex composition and high content of impurity. This work proposed a novel in-situ preparation method with red mud and aluminum dross to strengthen the ceramic. Iron oxide from red mud was reduced by aluminum nitride from aluminum dross into iron alloy. Mechanical property of the ceramic was improved after combination with the iron alloy. The strengthened Fe/Al₂O₃ cermet was obtained after calcination, ball-milling with alkali and hot-pressing sintering at 1300 °C. Density, water absorption, flexural strength, fracture toughness and microhardness of the Fe/Al₂O₃ cermet was 3.52 g/cm³, 0.14 %, 221.75 MPa, 3.13 MPa·m^1/2 and 1052.40 HV, respectively. It was found that the strengthening effect of Fe phase on cermet was consisted of grain refinement and restriction of crack propagation. The Fe phase could restrict growth of the oxide grain at less than 5 μm, which resulted in more crack deflection during the fracture. In addition, the Fe phase possessed a high bonding strength to the ceramic matrix, due to the in-situ growth of Fe from the ceramic matrix. Detaching of the Fe phase from the ceramic matrix could absorb the fracture energy and restrict the crack propagation. This work proposed a novel idea of strengthening ceramic made from industrial solid waste, by combination of metal and ceramic phase with in-situ preparation. In addition, the idea of producing metal phase from oxide matrix could provide a new way for cermet manufacture.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 15","pages":"Pages 20025-20032"},"PeriodicalIF":5.1,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144178106","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ablation behavior of ZrSi2-B4C-modified carbon fiber/boron phenolic resin ceramizable composites at different heat fluxes","authors":"Guoqin Jiang ,&nbsp;Zongyi Deng ,&nbsp;Minxian Shi ,&nbsp;Wei Zhang ,&nbsp;Yang Liu ,&nbsp;Wenjing Cao ,&nbsp;Linqin Gao ,&nbsp;Yanbin Wang ,&nbsp;Zhixiong Huang","doi":"10.1016/j.ceramint.2025.02.231","DOIUrl":"10.1016/j.ceramint.2025.02.231","url":null,"abstract":"<div><div>Carbon fiber/phenolic resin (CF/Ph) composites are widely used as outer surface thermal protection materials in hypersonic vehicles because of their excellent ablation resistance. As the flight speed of the vehicle increases, the problem of CF being prone to oxidation in high-temperature aerobic environments becomes more severe, hindering the adaptation of CF/Ph to more extreme service environments. In this study, ZrSi₂-B₄C was introduced into carbon fibre/boron phenolic resin (CF/BPR) to improve its ablation resistance. At 2.4 MW/m², the linear ablation rate (LAR) and mass ablation rate (MAR) of the composites were as low as −0.032 mm/s and 0.0186 g/s, respectively. At 3.6 MW/m², the LAR and MAR were as low as −0.005 mm/s and 0.0273 g/s, respectively. These findings indicate that the ceramizable composites exhibit excellent ablation resistance under both low and high heat flux conditions. The ablation mechanism of the composites was revealed. The in situ ceramization of ZrSi₂ and B₄C formed a Zr-Si-B-C-O ceramic layer, which hindered the thermal oxidation and aerodynamic erosion of CF and PyC.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 15","pages":"Pages 20643-20652"},"PeriodicalIF":5.1,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144178203","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fabrication and properties of lasing grade Nd:Y2O3 transparent ceramics with ZrO2 and MgO additives","authors":"Yongzhi Luo,&nbsp;Bin Wang,&nbsp;Xi Zhang,&nbsp;Bin Kang,&nbsp;Jianguo Deng,&nbsp;Shengquan Yu","doi":"10.1016/j.ceramint.2025.02.190","DOIUrl":"10.1016/j.ceramint.2025.02.190","url":null,"abstract":"<div><div>Nd:Y₂O₃ transparent ceramics were fabricated by vacuum pre-sintering and post-hot isostatic pressing with ZrO₂ and MgO as sintering additives. It was found that binary additives not only promoted the densification of Y₂O₃ ceramics, but also decreased the pre-sintering temperature by at least 150 °C compared with the single addition of ZrO₂. The best quality sample with 1 at.% ZrO₂ and 0.06 at.% MgO was pre-sintered at 1550 °C and post-HIPed at 1500 °C. The average grain size was approximately 0.96 μm, and the in-line transmittance reached 75.9 % at 400 nm and 81.4 % at 1000 nm. The ceramic also exhibits good optical homogeneity, which is evaluated by the interference stripes with the PV and RMS values of 385.8 nm and 21.3 nm, respectively. Continuous wave laser operation of the sample was demonstrated, and a maximum output power of 1.73 W at 1080.4 nm was achieved with a slope efficiency of 11.3 %.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 15","pages":"Pages 20247-20254"},"PeriodicalIF":5.1,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144177971","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancing the performance of CaTiO3-GDC heterostructure electrolytes in LT-CFCs","authors":"Dongchen Li ,&nbsp;Yingying Cui ,&nbsp;Xiaofang Hong ,&nbsp;M.A.K. Yousaf Shah ,&nbsp;Naveed Mushtaq ,&nbsp;Sajid Rauf ,&nbsp;Naila Arshad ,&nbsp;Sultan Irshad ,&nbsp;Abdullah N. Alodhayb ,&nbsp;Muhammad Yousaf ,&nbsp;Yuzheng Lu","doi":"10.1016/j.ceramint.2025.02.181","DOIUrl":"10.1016/j.ceramint.2025.02.181","url":null,"abstract":"<div><div>Designing ceramic fuel cells (CFCs) with fast ionic conduction and superior electrochemical performance at low temperatures is critical for advancing hydrogen applications. Here, we developed a heterostructure electrolyte by combining the ionic conductor Gd_0.1Ce_0.9O₂ (GDC) with the semiconductor material CaTiO₃ (CTO) to shape into the composite heterostructure (semiconductor ionic heterostructure) CTO-GDC. The designed heterostructure with different fermi levels established the depletion zone due to the redistribution of charges at the interface, leading to enhancement of the ionic conduction; meanwhile, the established built-in electric field suppresses the electronic conduction speed of the ion's transportation at the interface of the constructed heterostructure (CTO-GDC). The formation of heterostructure introduces a number of oxygen vacancies, as confirmed via x-ray photoelectron spectroscopy (XPS) and electron paramagnetic resonance (EPR), benefiting the transportation of ions in the composite heterostructure. The prepared composite heterostructure shows the highest power output of 810 mW/cm² at a low operational temperature of 520 °C. The CTO-GDC shows high ionic conductivity of 0.17 S cm⁻¹ at 520 °C and low activation energy of 0.785 eV at 520-420 °C. The composite containing a 50 % molar ratio of GDC and CTO demonstrated exceptional performance by successfully inhibiting electron transit, improving ionic conductivity, and achieving outstanding power output. The enhanced ionic conductivity with low activation energy of composite heterostructure suggests that designing a heterostructure seems an efficient approach to fuel cell application.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 15","pages":"Pages 20131-20142"},"PeriodicalIF":5.1,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144178078","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Novel route to prepare hydrous titania with electronic grade and high specific surface area from industrial titanyl sulfate solution","authors":"Congxue Tian ,&nbsp;Yue Wu ,&nbsp;Hongzhi Li ,&nbsp;Lingli Deng ,&nbsp;Guangqiang Ma","doi":"10.1016/j.ceramint.2025.02.150","DOIUrl":"10.1016/j.ceramint.2025.02.150","url":null,"abstract":"<div><div>Hydrous titania with electronic grade and high specific surface area was prepared by adjusting hydrolysis conditions from industrial <em>TiOSO</em>_<em>4</em> solution, establishing solid foundation for its application in electronics industry such as high-frequency capacitors, ceramic dielectric capacitors, and <em>PTC</em> thermistors, etc. The effects of hydrolysis conditions such as total <em>TiO</em>_<em>2</em> concentration and <em>Fe/TiO</em>_<em>2</em> ratio on the compositions and structures of hydrous titania were investigated. The total <em>TiO</em>_<em>2</em> concentration and <em>Fe/TiO</em>_<em>2</em> ratio affected the nucleation, crystallization, growth and aggregation of hydrous titania, resulting in changes in the crystal size, subsequently affecting its particle size distribution, impurity content, specific surface area for the hydrous titania. High <em>Fe/TiO</em>_<em>2</em> ratio led to anisotropic shrinkage of the crystal structure for hydrous titania, and reduced its crystal plane spacing. Under the interaction between sulfate ions with chelating bidentate coordination structure and water molecules, the hydrous titania particles accumulated to form the pore structure. When the total <em>TiO</em>_<em>2</em> concentration was of 160-170 g/L and the <em>Fe/TiO</em>_<em>2</em> ratio of 0.53, electronic grade hydrous titania could be produced with specific surface area of 328 m²/g, median diameter size of 0.89 μm, <em>TiO</em>_<em>2</em> content of 99.78 <em>%</em>.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 15","pages":"Pages 19787-19794"},"PeriodicalIF":5.1,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144177686","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A containerless melting-solidification strategy to fabricate ZrO2-Al2O3-SiO2 ternary ceramic composites containing crystalline and amorphous phases","authors":"Le Fu,&nbsp;Zihua Lei,&nbsp;Wenjun Yu,&nbsp;Mingxi Deng","doi":"10.1016/j.ceramint.2025.02.161","DOIUrl":"10.1016/j.ceramint.2025.02.161","url":null,"abstract":"<div><div>The limited flexibility in terms of chemical composition restricts the microstructure and property regulation possibilities of ZrO₂-Al₂O₃ binary ceramic composites (BCCs). Therefore, it is significant to prepare ternary ceramic composites by introducing a third phase. In this study, a fixed proportion of amorphous SiO₂ (30 mol%) was incorporated as the third phase to develop ZrO₂-Al₂O₃-SiO₂ ternary ceramic nanocomposites (TCNCs) with two distinct Zr/Al ratios. The TCNCs were fabricated using containerless aerodynamic levitation technology, which featured a large thermal gradient that would facilitate the formation of nano-eutectics. In samples with a Zr/Al ratio of 3:1, monoclinic ZrO₂ was the sole crystalline phase. The Al element was present in either Al-O-Si or Al-O glass phase, depending on the processing temperature; In contrast, ZrO₂-Al₂O₃ nano-eutectics were formed in samples with a Zr/Al ratio of 3:8, accompanied by the generation of mullite crystallites. The SiO₂ phase functioned as an amorphous matrix. Vickers hardness of the TCNC with a Zr/Al ratio of 3:8 exhibited comparability to that reported for ZrO₂-Al₂O₃ composites.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 15","pages":"Pages 19952-19962"},"PeriodicalIF":5.1,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144178095","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Highly efficient and stable dual-band photoluminescence from strongly confined Mn2+ doped CsPbBr3 nanocrystals in glasses","authors":"Yudong Zhang,&nbsp;Wenchao Zhang,&nbsp;Chao Liu","doi":"10.1016/j.ceramint.2025.02.166","DOIUrl":"10.1016/j.ceramint.2025.02.166","url":null,"abstract":"<div><div>Lead halide perovskite nanocrystals (NCs) exhibit outstanding tunable optical properties in full color light-emitting application. However, stable and efficient blue emitting perovskite NCs are still lacking. Here, based on the liquid phase separation of glasses containing cesium lead halide NCs, strongly confined CsPbBr₃ NCs are precipitated in glasses along with the co-precipitation of Cs₄PbBr₆ NCs. The strongly confined CsPbBr₃ NCs in glasses exhibit efficient and stable photoluminescence in blue spectral range. Mn²⁺ ions are successfully incorporated into these strongly confined CsPbBr₃ NCs, and efficient energy transfer from CsPbBr₃ NCs to Mn²⁺ ions is realized, leading to highly efficient dual-band photoluminescence with quantum efficiency of 76 %. These results provide a new route to fabricate strongly confined CsPbBr₃ NCs and Mn²⁺ doped CsPbBr₃ NCs, which can widen the potential applications of cesium lead halide perovskite NCs doped glasses.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 15","pages":"Pages 20016-20024"},"PeriodicalIF":5.1,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144178105","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}