Solid State Communications最新文献

Magnetic properties of rare earth doped ZnO nanoparticles: A comprehensive study via Magnetization and EPR 稀土掺杂ZnO纳米粒子的磁性能：磁化和EPR综合研究

IF 2.4 4区物理与天体物理

Solid State Communications Pub Date : 2026-04-01 Epub Date: 2026-02-19 DOI: 10.1016/j.ssc.2026.116373

Rakesh Tiwari , Sujata Borade , Archana Sharma , Santosh Mani

{"title":"Magnetic properties of rare earth doped ZnO nanoparticles: A comprehensive study via Magnetization and EPR","authors":"Rakesh Tiwari , Sujata Borade , Archana Sharma , Santosh Mani","doi":"10.1016/j.ssc.2026.116373","DOIUrl":"10.1016/j.ssc.2026.116373","url":null,"abstract":"<div><div>This study presents the synthesis and characterization of rare earth (RE)-doped zinc oxide (ZnO) nanoparticles with an average particle size in the 10 nm range. The resulting nanostructures exhibit the wurtzite phase of ZnO, attributed to their preferential anisotropic growth along the polar c-axis. Upon excitation of the ZnO host within the bandgap region, visible luminescence intensity increases with rising RE3+ concentrations. This emission is primarily attributed to various intrinsic and extrinsic defect states within the host lattice. Energy transfer from these defect centers to RE3+ dopant sites facilitates characteristic luminescence. Specifically, efficient intra-4f orbital transitions (5D4 → 7Fⱼ) of Tb3+ ions result in distinctive green and red emissions. Furthermore, modulation of defect states and decay rates of RE3+ transitions enables temporal control over the emission profile, allowing for selective generation of red or pure green light. This work highlights the potential of defect engineering via bottom-up synthesis methods to tailor energy transfer dynamics, offering promising avenues for the development of multicolor emission displays and ZnO-based optoelectronic phosphor devices. In addition to their optical applications, RE-doped ZnO nanoparticles exhibit unique physicochemical and biological properties that contribute to sustainable agricultural practices. These nanoparticles enhance plant tolerance to abiotic stresses such as drought, salinity, and heavy metal contamination by boosting antioxidant enzyme activity and immobilizing toxic metals. From a sustainability perspective, their use promotes reduced environmental contamination, improved nutrient use efficiency, and lower dependence on chemical inputs, thereby supporting eco-friendly and resource-efficient agriculture.</div></div>","PeriodicalId":430,"journal":{"name":"Solid State Communications","volume":"411 ","pages":"Article 116373"},"PeriodicalIF":2.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147386711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Structural and low-temperature magnetic properties in Ba2GdBiO6 double-perovskite oxide Ba2GdBiO6双钙钛矿氧化物的结构和低温磁性能

IF 2.4 4区物理与天体物理

Solid State Communications Pub Date : 2026-04-01 Epub Date: 2026-02-16 DOI: 10.1016/j.ssc.2026.116359

Jiameng Xu, Junmiao Lin, Liyao Zhu, Xijia Chen, Yikun Zhang

{"title":"Structural and low-temperature magnetic properties in Ba2GdBiO6 double-perovskite oxide","authors":"Jiameng Xu, Junmiao Lin, Liyao Zhu, Xijia Chen, Yikun Zhang","doi":"10.1016/j.ssc.2026.116359","DOIUrl":"10.1016/j.ssc.2026.116359","url":null,"abstract":"<div><div>The low-temperature magnetocaloric (MC) properties in rare-earth-based materials have been examined intensively which was aimed to search of suitable candidates for magnetic cooling applications. We herein synthesized a single-phased Ba2GdBiO6 oxide via a solid-state reaction route and examined its structural, elemental valence states, magnetic and MC properties. Our studies indicated that the Ba2GdBiO6 oxide crystallizes in a double perovskite (DP)-type structure with monoclinic C12/m1 space group at room temperature and shows no distinct magnetic ordering above 1.8 K. The constituent elements are homogeneously distributed and presented as expected valence states of Ba2+, Gd3+, Bi5+, and O2−. Considerable reversible low-temperature MC effect were observed in Ba2GdBiO6 DP oxide with maximum magnetic entropy change and relative cooling power/refrigerant capacity as 21.32 J/kgK and 125.55/90.70 J/kg (magnetic field variation of 0-50 kOe), respectively. These identified values of MC parameters in Ba2GdBiO6 DP oxide are comparable with those of A2REMO6 DP oxides and recently acquired materials with notable low-temperature MC responses, making it considerable for low-temperature cooling applications.</div></div>","PeriodicalId":430,"journal":{"name":"Solid State Communications","volume":"411 ","pages":"Article 116359"},"PeriodicalIF":2.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147386714","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Emerging optoelectronic and photocatalytic characteristics of two-dimensional BiSF/GaSe van der Waals heterostructure 二维BiSF/GaSe范德华异质结构新出现的光电和光催化特性

IF 2.4 4区物理与天体物理

Solid State Communications Pub Date : 2026-04-01 Epub Date: 2026-02-18 DOI: 10.1016/j.ssc.2026.116371

Riddhi Desai, Yashasvi Naik, Disha Mehta, I.B. Patel

引用次数: 0

Dynamic and tunable ultra-narrowband terahertz absorber with the phase transition characteristics of VO2 具有VO2相变特性的动态可调谐超窄带太赫兹吸收体

IF 2.4 4区物理与天体物理

Solid State Communications Pub Date : 2026-04-01 Epub Date: 2026-02-19 DOI: 10.1016/j.ssc.2026.116368

Chen Jinjiang , Zhe Pan , Jun Zhu

{"title":"Dynamic and tunable ultra-narrowband terahertz absorber with the phase transition characteristics of VO2","authors":"Chen Jinjiang , Zhe Pan , Jun Zhu","doi":"10.1016/j.ssc.2026.116368","DOIUrl":"10.1016/j.ssc.2026.116368","url":null,"abstract":"<div><div>Currently, conventional terahertz sensors face significant challenges in achieving high sensitivity and resolution when detecting minute refractive index variations in biological and chemical samples. In response to this challenge, we propose an ultrasensitive, multifunctional, and tunable ultra-narrowband terahertz absorber. The device is based on a metal–insulator–metal (MIM) sandwich structure, comprising a top patterned graphene/vanadium dioxide (VO2) composite layer, an intermediate dielectric spacer, and a bottom metallic reflector. Dynamic and tunable ultra-narrowband terahertz absorption is realized through the electrostatic modulation of graphene's Fermi level combined with thermoelectric control of the metal–insulator phase transition in VO2. Simulation results demonstrate near-perfect ultra-narrowband absorption (with a full width at half maximum of approximately 0.1 THz) at frequencies around 0.82 THz and 1.43 THz. The absorption peak frequency exhibits a pronounced blue shift upon tuning the chemical potential of graphene, while modulation of VO2 conductivity enables both frequency shifting and amplitude control of the absorption. Furthermore, the absorber exhibits wide-angle insensitivity, maintaining stable absorption performance under TE-polarized incidence angles from 0° to 50°, alongside exceptional refractive index sensing sensitivity. This design effectively integrates the electrical tunability of graphene with the phase transition characteristics of VO2, providing an innovative “wide-angle stable, multi-field coupled tunable” device solution for applications in terahertz intelligent communication, biomedical detection, and dynamic spectral regulation.</div></div>","PeriodicalId":430,"journal":{"name":"Solid State Communications","volume":"411 ","pages":"Article 116368"},"PeriodicalIF":2.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147386664","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Designing stable bromide perovskites for energy conversion: d-orbital engineering and molecular dynamics study of K2MBr6 (M = Sn, Ti, Pd, Pt) 设计用于能量转换的稳定溴化钙钛矿：K2MBr6 （M = Sn, Ti, Pd, Pt）的d轨道工程和分子动力学研究

IF 2.4 4区物理与天体物理

Solid State Communications Pub Date : 2026-04-01 Epub Date: 2026-02-23 DOI: 10.1016/j.ssc.2026.116381

Mohamed El Amine El Goutni , Hela Ferjani , Mohammed Batouche , Taieb Seddik

{"title":"Designing stable bromide perovskites for energy conversion: d-orbital engineering and molecular dynamics study of K2MBr6 (M = Sn, Ti, Pd, Pt)","authors":"Mohamed El Amine El Goutni , Hela Ferjani , Mohammed Batouche , Taieb Seddik","doi":"10.1016/j.ssc.2026.116381","DOIUrl":"10.1016/j.ssc.2026.116381","url":null,"abstract":"<div><div>Lead-free vacancy-ordered double perovskites K2MBr6 (M = Sn, Ti, Pd, Pt) were systematically investigated using density functional theory (DFT) to assess their structural stability, electronic behavior, optical activity, and photocatalytic potential for energy-conversion applications. Structural optimization using the WC-GGA functional confirms that all compounds crystallize in the cubic Fm-3m phase with negative formation energies, dynamically stable phonon spectra, and robust thermal behavior supported by ab-initio molecular dynamics simulations at 300 K. Electronic properties obtained using the TB-mBJ potential with spin–orbit coupling reveal a transition from direct band gaps for K2SnBr6 and K2TiBr6 (Γ→Γ) to indirect band gaps for K2PdBr6 and K2PtBr6 (X→X), reflecting the influence of d-orbital contributions across the series. Optical calculations indicate strong absorption coefficients in the visible region, linked to Br-p and M-d electronic transitions. Mechanical analysis confirms elastic stability and moderate ductility for all compositions. Photocatalytic feasibility was evaluated using absolute band-edge positions derived from the Mulliken electronegativity model, showing that all compounds possess sufficiently high VBM levels to drive the oxygen evolution reaction, while their CBM positions lie above the H+/H2 reduction potential, indicating that they function as oxidation-active semiconductors suitable for photoanodes or Z-scheme configurations. These results position K2MBr6 perovskites as promising lead-free materials for optoelectronic and photocatalytic applications, with tunable properties governed by d-orbital engineering at the B-site cation.</div></div>","PeriodicalId":430,"journal":{"name":"Solid State Communications","volume":"411 ","pages":"Article 116381"},"PeriodicalIF":2.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147386665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Irradiation induces structural and valence state conversion of Sm-doped lithium borate glass 辐照诱导掺钐硼酸锂玻璃的结构态和价态转变

IF 2.4 4区物理与天体物理

Solid State Communications Pub Date : 2026-04-01 Epub Date: 2026-02-21 DOI: 10.1016/j.ssc.2026.116378

Hanan Ali , A.M. Saad , Y. Badr , M.M. Elokr , Alaa E. Giba

{"title":"Irradiation induces structural and valence state conversion of Sm-doped lithium borate glass","authors":"Hanan Ali , A.M. Saad , Y. Badr , M.M. Elokr , Alaa E. Giba","doi":"10.1016/j.ssc.2026.116378","DOIUrl":"10.1016/j.ssc.2026.116378","url":null,"abstract":"<div><div>The conversion between the two valence states of Sm ion, 3+ and 2+, attracts great attention thanks to its crucial role in spectral Hole Burning and the associated applications ranging from spectroscopy to quantum computing and data storage. This work reports on the influence of gamma (γ) irradiation on the conversion of Sm3+ to Sm2+. Fourier Transform Infrared Spectroscopy (FTIR) and Electron Spin Resonance (ESR) analyses, after irradiation, point to microstructural change that exhibits partial transformation of BO3 to BO4 (distorted BO3) of borate units. This local environmental modification is likely favorable for conversion the valence state of Sm from 3+ to 2+. In addition, the photoluminescence (PL) measurement evidences such valence state conversion after irradiation. The PL spectral features confirm the emission lines related to the converted valence state version (Sm2+). The conversion mechanism is attributed to the partial transformation of BO3 to BO4 (distorted BO3) as a result of irradiation interaction. Thus, as a particular case, one sample has been exposed to neutron irradiation in order to induce strong microstructure distortion. As a consequence, the corresponding PL measurement reveals a significant conversion ratio to Sm2+. This emphasizes on the usage of the PL as a significant non-destructive tool to probe the valence state conversion. These findings could also provide a considerable approach to understand the physics behind such conversion process.</div></div>","PeriodicalId":430,"journal":{"name":"Solid State Communications","volume":"411 ","pages":"Article 116378"},"PeriodicalIF":2.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147386667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electric field induced paraelectric-to- paraelectric phase transformations in Y2O3-Hf0.5Zr0.5O2 ceramics 电场诱导Y2O3-Hf0.5Zr0.5O2陶瓷的对电相变

IF 2.4 4区物理与天体物理

Solid State Communications Pub Date : 2026-04-01 Epub Date: 2026-02-13 DOI: 10.1016/j.ssc.2026.116361

Amit Kumar , Andy Fitch , Ajay Kumar Kalyani

引用次数: 0

Copper valence control enables stable lead-free Cs3Cu2Cl5 for white light-emitting diodes 铜价控制使稳定的无铅Cs3Cu2Cl5白光发光二极管

IF 2.4 4区物理与天体物理

Solid State Communications Pub Date : 2026-04-01 Epub Date: 2026-02-27 DOI: 10.1016/j.ssc.2026.116388

Gibaek Lee , Haedam Jin , Dohun Baek , Jeongbeom Cha , Suyeong Jo , Tae Oh Yoon , Min Kim

引用次数: 0

Smart optimization of rare-earth-based perovskite solar cells using machine learning approaches 利用机器学习方法对稀土钙钛矿太阳能电池进行智能优化

IF 2.4 4区物理与天体物理

Solid State Communications Pub Date : 2026-04-01 Epub Date: 2026-02-24 DOI: 10.1016/j.ssc.2026.116380

Ranadip Kundu

{"title":"Smart optimization of rare-earth-based perovskite solar cells using machine learning approaches","authors":"Ranadip Kundu","doi":"10.1016/j.ssc.2026.116380","DOIUrl":"10.1016/j.ssc.2026.116380","url":null,"abstract":"<div><div>Perovskite solar cells (PSCs) have attracted considerable attention due to their high power conversion efficiency (PCE), low fabrication cost, and lightweight nature; however, concerns regarding lead toxicity and long-term stability hinder large-scale deployment. In this work, a lead-free oxide perovskite, La0.5Ce0.5Fe0.9Cd0.1O3 (LCFCO), is proposed and systematically investigated as a novel absorber material using the SCAPS-1D simulation framework. Partial substitution of Fe with Cd enables bandgap tuning to approximately 2.0 eV, enhancing optical absorption while maintaining structural robustness. The optimized device architecture consists of ITO/TiO2/LCFCO/NiO, where TiO2 and NiO serve as stable electron and hole transport layers with favourable energy-level alignment. Comprehensive optimization was performed by varying absorber thickness, doping concentration, intrinsic defect density, interface properties, and resistive losses. The optimal absorber parameters were identified as a thickness of 0.5 μm, acceptor density of 1 × 1015 cm−3, and defect density of 1 × 1013 cm−3, yielding a maximum PCE of 19.51% under standard AM1.5G illumination. Key photovoltaic parameters, including JSC, VOC, FF, and PCE, were systematically analysed along with temperature and resistance effects. Furthermore, a machine-learning-assisted optimization strategy based on a Random Forest regressor was employed to validate simulation trends and identify dominant performance drivers, achieving a predictive accuracy of approximately 96%. The results highlight the strong potential of LCFCO as an environmentally benign absorber and demonstrate the effectiveness of combining device simulation with machine learning for accelerating the design of sustainable PSCs.</div></div>","PeriodicalId":430,"journal":{"name":"Solid State Communications","volume":"411 ","pages":"Article 116380"},"PeriodicalIF":2.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147386656","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigations of transition metal-doped GeSe/GeTe monolayers: Electronic structure and optical properties 过渡金属掺杂GeSe/GeTe单层膜的研究：电子结构和光学性质

IF 2.4 4区物理与天体物理

Solid State Communications Pub Date : 2026-04-01 Epub Date: 2026-02-26 DOI: 10.1016/j.ssc.2026.116383

Zicheng Zhu , Yingying Zhao , Xianxin Deng , Jie Guo , Baoxue Li

{"title":"Investigations of transition metal-doped GeSe/GeTe monolayers: Electronic structure and optical properties","authors":"Zicheng Zhu , Yingying Zhao , Xianxin Deng , Jie Guo , Baoxue Li","doi":"10.1016/j.ssc.2026.116383","DOIUrl":"10.1016/j.ssc.2026.116383","url":null,"abstract":"<div><div>In this work, first-principles calculations based on density functional theory (DFT) were employed to systematically investigate the geometric structures, electronic properties, and optical characteristics of α-GeSe and α-GeTe monolayers. Electronic structure analysis reveals that GeSe exhibits a direct bandgap of about 1.15 eV at the Γ point, whereas GeTe possesses an indirect bandgap of approximately 0.87 eV, making it more favorable for infrared optoelectronic devices. Upon 3d transition metals doping, strong p–d hybridization between transition-metal (TM) 3d and host p orbitals introduces localized impurity states near the Fermi level, resulting in tunable magnetic and electronic properties. V and Cr dopants in GeTe induce spin splitting and metallic or half-metallic behavior, while Fe and Co dopants maintain metallicity with varied spin polarization strength. Comparatively, GeSe shows more localized 3d states and stronger magnetic moments due to weaker p–d coupling. Bader charge analysis reveals electron transfer from Ge and TM atoms to Se/Te atoms, more pronounced in GeSe, indicating higher ionicity and stronger electronic correlation. Overall, transition-metal doping effectively modulates the band structure, conductivity, and spin polarization of GeSe and GeTe, enabling controllable semiconductor-to-metal transitions. These results provide theoretical insight into designing Ge–VIA two-dimensional materials for spintronic and optoelectronic applications.</div></div>","PeriodicalId":430,"journal":{"name":"Solid State Communications","volume":"411 ","pages":"Article 116383"},"PeriodicalIF":2.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147386657","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0