Materials Research Bulletin最新文献

{"title":"Efficient and thermally stable Sm3+-activated Na2BaCa(PO4)2 phosphors for solid-state lighting and optical thermometry","authors":"Sandeep Kumar,&nbsp;Rajesh Kumar,&nbsp;Arvind K Gathania","doi":"10.1016/j.materresbull.2025.113939","DOIUrl":"10.1016/j.materresbull.2025.113939","url":null,"abstract":"<div><div>Na₂BaCa(PO₄)₂ phosphors doped with Sm³⁺ ions were synthesized via a urea-assisted solution combustion method, and their structural and optical properties were investigated using XRD, FTIR, XPS, and PL analyses. XRD confirmed a stable single-phase Na₂BaCa(PO₄)₂ lattice up to 0.5 mol% doping of Sm³⁺ ions, while higher doping concentrations (<em>x</em> ≥ 1 mol%) induced a secondary Na₃Ba₂Ca(PO₄)₃ phase. PL studies revealed a maximum emission intensity at a 5 mol% doping concentration of Sm³⁺ ions, with concentration quenching occurring beyond this level. The optimized Na₂BaCa(PO₄)₂: 0.05Sm³⁺ sample exhibited intense reddish-orange emission with CIE coordinates (0.5948, 0.4044), 99.9 % color purity, and a CCT of 1507 K. Excellent thermal stability of the optimal Na₂BaCa(PO₄)₂:0.05Sm³⁺ phosphor was observed up to 443 K, with an activation energy of <strong>0.1997eV</strong>. Furthermore, under 401 nm excitation, the phosphor exhibited promising optical thermometry performance between 293 K and 593 K, with maximum sensitivities of <strong>10.42</strong> <strong>×</strong> <strong>10⁻⁴ K⁻¹</strong> (absolute) and <strong>0.22 % K⁻¹</strong> (relative), demonstrating its potential in solid-state lighting and temperature sensing applications.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"197 ","pages":"Article 113939"},"PeriodicalIF":5.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145705559","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of CF4 plasma treatment on β-Ga2O3 (001) substrates for enhanced homoepitaxial growth by MOCVD","authors":"Gieop Lee ,&nbsp;An-Na Cha ,&nbsp;Sea Cho ,&nbsp;Jeong Soo Chung ,&nbsp;Young-Boo Moon ,&nbsp;Myung Sik Kim ,&nbsp;Jun-Seok Ha","doi":"10.1016/j.materresbull.2025.113941","DOIUrl":"10.1016/j.materresbull.2025.113941","url":null,"abstract":"<div><div>Recently, β-Ga₂O₃ has attracted considerable attention as an ultrawide-bandgap semiconductor owing to its large bandgap (∼4.9 eV), high breakdown field, and strong potential for next-generation power and optoelectronic devices. However, achieving high-quality homoepitaxial growth remains challenging due to interfacial strain, lattice imperfections, and surface-related effects. In this study, homoepitaxial β-Ga₂O₃ (001) films were grown on CF₄ plasma–treated β-Ga₂O₃ (001) substrates using metal–organic chemical vapor deposition (MOCVD). The CF₄-based inductively coupled plasma–reactive ion etching (ICP-RIE) treatment increased the substrate surface free energy by approximately 10 mJ/m² and reduced surface roughness, thereby enhancing precursor adsorption and promoting two-dimensional, layer-by-layer growth. As a result, both the crystal quality and surface morphology of the epitaxial films were significantly improved, and transmission electron microscopy confirmed the suppression of step-like interfacial distortions. These findings demonstrate that CF₄ plasma treatment effectively enhances homoepitaxial β-Ga₂O₃ (001) growth by minimizing interfacial defects and enabling more uniform epitaxy.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"197 ","pages":"Article 113941"},"PeriodicalIF":5.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145747591","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Zn-based metal organic framework encapsulated bio-inspired derived carbon-quantum dots composite as multifunctional material for photocatalytic removal of Victoria Blue and Rose Bengal and fluorescent probe for efficient Fe3+ ion detection","authors":"Jnyanashree Darabdhara,&nbsp;Md. Ahmaruzzaman","doi":"10.1016/j.materresbull.2025.113937","DOIUrl":"10.1016/j.materresbull.2025.113937","url":null,"abstract":"<div><div>Here, we report a solar light driven photocatalyst (Cq-ZIF-8) for efficiently degrading VB and RB as the targeted pollutant. The photocatalyst was fabricated by impregnating carbon (Cq) dots on the surface of a metal organic framework (ZIF-8) and characterized by PXRD, TEM, RAMAN, XPS, UV-DRS and BET. The Cq-ZIF-8 composite showed 94 and 95 % photocatalytic degradation of VB and RB under solar-light irradiation within 65 and 55 min. The fabricated Cq-ZIF-8 composite was tested as a luminescent probe for selective and sensitive detection of Fe³⁺ ions. The Cq-ZIF-8 material turned off its fluorescence behavior selectively for Fe³⁺ ion, and detection limit for specific Fe³⁺ ion sensing was found to be 1.18 μM and showed high selectivity for Fe³⁺ ion detection in presence of other metal-ions. The bio-inspired designed Cq-ZIF-8 material exhibited excellent dual functionality as an effective photocatalyst and excellent luminescent sensor mostly supported in terms of economic and sustainability prospect.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"197 ","pages":"Article 113937"},"PeriodicalIF":5.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145749681","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study of the ReS₂-CoO/CoS₂ Heterostructure for Efficient Bifunctional Electrocatalysis","authors":"Dan-pu Zhao ,&nbsp;Zhi-kun Peng ,&nbsp;Shuai Wei ,&nbsp;Qing-qing Pang ,&nbsp;Qiao-yun Liu ,&nbsp;Zhong-yi Liu","doi":"10.1016/j.materresbull.2025.113988","DOIUrl":"10.1016/j.materresbull.2025.113988","url":null,"abstract":"<div><div>Heterogeneous interfaces are an effective strategy to modulate interfacial properties and enhance catalytic functionality. However, their dynamic evolution under reaction conditions remains elusive, hindering rational catalyst design. Herein, we report a ReS₂-CoO/CoS₂ heterostructure to investigate its structural transformation under electrocatalytic water splitting conditions, as well as to modulate its activity and stability. Electrochemical measurements reveal exceptional bifunctional catalytic activity, with overpotentials of 25 mV for HER (at 10 mA·cm⁻²) and 241 mV for OER (at 50 mA·cm⁻²). The synergistic interfacial interaction substantially enhances the kinetic processes. The integrated interface between CoO and CoS₂ on ReS₂ not only ensures intimate electronic coupling but also facilitates abundant surface defect formation, as confirmed by FTIR, XPS, and EPR analyses. In-situ Raman spectroscopy demonstrates structural robustness during HER, whereas a significant surface reconstruction occurs during the OER, in which the initial CoO/CoS₂ phase transforms into CoO/CoOOH, serving as the new active species. The catalyst achieves efficient overall water splitting performance (1.43 V at 10 mA‧cm⁻²) with sustained performance. These findings offer valuable insights into interfacial engineering strategies for the rational design of advanced electrocatalysts.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"197 ","pages":"Article 113988"},"PeriodicalIF":5.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145939376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Modified NaMgF3 microwave ceramic with the CaTiO3 and LiF additions for LTCC applications","authors":"H. Zheng,&nbsp;J.J. Bian","doi":"10.1016/j.materresbull.2025.113970","DOIUrl":"10.1016/j.materresbull.2025.113970","url":null,"abstract":"<div><div>We successfully tuned the high negative <em>τ_f</em> value of the NaMgF₃ ceramic by adding appropriate amounts of CaTiO₃, investigating the chemical compatibilities between the oxide and fluoride, phase assemblages, sintering behaviors, microstructures, and microwave dielectric properties of the NaMgF_3<img>CaTiO₃ binaries sintered under different temperatures and atmospheres, in this work. MgO and MgTiO₃ secondary phases appear at the sample surface after sintering at 900°C/3h in the ambient atmosphere owing to the evaporation of F, which could be suppressed after sintering at the same temperature in an N₂ atmosphere. However, CaF₂ and Na₃TiOF₅ secondary phases are present after sintering at 950°C/3h, even in the N₂ atmosphere. The addition of CaTiO₃ could tune the <em>τ_f</em> value from negative to positive at the cost of a decrease in the densification (&lt;90%) and an increase in the nonlinearity of the temperature-dependent resonant frequency after sintering at 900°C/3h in the N₂ atmosphere. Further addition of an appropriate amount of LiF could significantly densify the NaMgF_3<img>CaTiO₃ via liquid-phase sintering. The 0.83NaMgF₃–0.17CaTiO₃ composition with 2 mol% LiF addition exhibits a relative density of approximately 95%, good combined microwave dielectric properties (<em>ε_r</em>=12.7, <em>Q×f</em>=39,000GHz, average <em>τ_f</em>₌4.6ppm/ °C), and good co-firing chemical compatibility with silver after sintering at 850°C/3h in N₂ atmosphere, thus a promising candidate for LTCC applications.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"197 ","pages":"Article 113970"},"PeriodicalIF":5.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145840998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Significant enhancement of luminescence quantum yield in the Bi and Eu co-doped lithium tetraborate glass","authors":"I.I. Kindrat ,&nbsp;B.V. Padlyak ,&nbsp;V.T. Adamiv ,&nbsp;A. Drzewiecki ,&nbsp;R. Lisiecki","doi":"10.1016/j.materresbull.2025.113972","DOIUrl":"10.1016/j.materresbull.2025.113972","url":null,"abstract":"<div><div>Lithium tetraborate (Li₂B₄O₇) glasses doped with Bi, doped with Eu, and co-doped with Bi and Eu were synthesised and characterised by X-ray diffraction (XRD), electron paramagnetic resonance (EPR), optical absorption, and photoluminescence (emission and excitation spectra, decay kinetics, quantum yield) spectroscopy. The Li₂B₄O₇:Bi,Eu glass exhibit a broad violet-blue band attributed to the ³P₁ → ¹S₀ transition of Bi³⁺ ions and several narrow orange-red bands attributed to the ⁵D₀ → ⁷F_<em>J</em> (<em>J</em> = 0 – 4) transitions of Eu³⁺ ions. Upon 393 nm excitation, the luminescence quantum yield of the Li₂B₄O₇:Bi,Eu glass is 4.25 times higher than that of the Li₂B₄O₇:Eu glass. Upon UV excitation, optimal for Bi³⁺ ions, the luminescence quantum yield increases by a factor of 42. The achieved luminescence quantum yield in the Li₂B₄O₇:Bi,Eu glass surpasses not only that of Eu³⁺-doped oxide glasses but also many Bi³⁺ and Eu³⁺ co-doped phosphors.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"197 ","pages":"Article 113972"},"PeriodicalIF":5.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145840989","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Corrigendum to “Design of a S-scheme heterojunction photocatalyst of N-TiO2/CuO/GO with enhanced visible-light activity for efficient formaldehyde degradation” [Materials Research Bulletin 196 (2026) 113925]","authors":"Zhexi Shen ,&nbsp;Jiayi Shi ,&nbsp;Longlong Xiao ,&nbsp;Boqu Yu ,&nbsp;Xiaoxin Chen ,&nbsp;Chaohong Zhang","doi":"10.1016/j.materresbull.2025.113969","DOIUrl":"10.1016/j.materresbull.2025.113969","url":null,"abstract":"","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"197 ","pages":"Article 113969"},"PeriodicalIF":5.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145881081","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Thermal induced upconversion luminescence modulation and optical temperature sensing of (KMg)0.6Lu1.4(MoO4)3: Yb3+/Ho3+ phosphors","authors":"Ying Yang ,&nbsp;Yiqi Yu ,&nbsp;Liuzhen Feng ,&nbsp;Renfu Li ,&nbsp;Zhiwen Ao ,&nbsp;Jinmin Zhang ,&nbsp;Yijian Sun ,&nbsp;Jinsheng Liao","doi":"10.1016/j.materresbull.2026.113991","DOIUrl":"10.1016/j.materresbull.2026.113991","url":null,"abstract":"<div><div>A series of (KMg)_0.6Lu_1.4(MoO₄)₃: Yb³⁺/Ho³⁺ (KMLMO: Yb/Ho) phosphors were synthesized via a solid-state reaction method. Experiments demonstrated that ​​the optimal KMLMO:30%Yb/1%Ho phosphor is a two-dimensional negative thermal expansion material. At 980 nm excitation, KMLMO: Yb/Ho phosphor exhibits distinct upconversion emission peaks at 543 and 662 nm. As temperature increases, the non-radiative relaxations (NR1: ⁵I₆→⁵I₇ and NR2: ⁵F₄/⁵S₂→⁵F₅) of Ho³⁺ are enhanced, resulting in red light emission undergoing less quenching than green light; consequently, the emitted light of phosphor shifts from yellow-green to orange-red, cleverly utilizing this feature to achieve temperature visualization. Based on the fluorescence intensity ratio (I_{662 nm}/I_{543 nm}) of Ho³⁺, the relative sensitivity of the phosphor is as high as 0.46% K⁻¹ at 448 K and the repeatability is &gt;98.3% at whole temperature range. Overall, all findings demonstrate that KMLMO: 30%Yb/1%Ho phosphor is a promising optical material for temperature sensing.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"197 ","pages":"Article 113991"},"PeriodicalIF":5.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145939287","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Low-cost bimolecular synergistic passivation of the perovskite buried interface for the perovskite solar cell","authors":"Tao Wang ,&nbsp;Lidan Wang ,&nbsp;Can Wang ,&nbsp;Yunpeng Xu ,&nbsp;Xue Zhang ,&nbsp;Qixin Zhuang ,&nbsp;Xiao Li ,&nbsp;Zisheng Su ,&nbsp;Yaoming Xiao","doi":"10.1016/j.materresbull.2026.113989","DOIUrl":"10.1016/j.materresbull.2026.113989","url":null,"abstract":"<div><div>The efficiency and stability of perovskite solar cells (PSCs) are influenced by various factors, among which the interface between the electron transport layer (ETL) and the perovskite (PVK) layer in n-i-p structured PSC plays a crucial role. Herein, a low-cost and environmentally friendly dual-molecule system comprising lysine and acetylsalicylic acid is employed as an interfacial modification strategy for ETL/PVK interface. This strategy effectively passivates defects of the tin dioxide (SnO₂) ETL, aligns the energy levels between ETL and PVK, and enhances the crystallinity of PVK film, thereby improving both the efficiency and stability of PSC. PSC utilizing the dual-molecule passivation achieves a power conversion efficiency (PCE) of 24.25% with enhanced stability, outperforming those with single-molecule passivation.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"197 ","pages":"Article 113989"},"PeriodicalIF":5.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145939284","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Polyurethane and cellulose nanofibers: A systematic review of interactions in composites and their applications","authors":"Paulo Alexandre Silveira da Silva ,&nbsp;Tawani Lorena Naide Acosta ,&nbsp;Larissa Queiroz Minillo ,&nbsp;Rafael de Avila Delucis ,&nbsp;Pedro Henrique Gonzalez de Cademartori ,&nbsp;Andrey Pereira Acosta","doi":"10.1016/j.materresbull.2025.113968","DOIUrl":"10.1016/j.materresbull.2025.113968","url":null,"abstract":"<div><div>Over recent years, polyurethane (PU) composites reinforced with cellulose nanofibers (CNFs) have attracted increasing scientific and industrial interest due to their potential for sustainable and multifunctional applications. However, despite numerous publications reporting improvements in mechanical, thermal, and functional properties, the literature lacks a systematic understanding of how CNF incorporation methods influence the final performance of PU/CNF composites. This review addresses this gap by critically analyzing 21 peer-reviewed studies selected through a PRISMA-based methodology, focusing on the correlation between CNF incorporation strategies and the resulting properties of PU-based materials. In particular, this work highlights the lack of standardization in CNF dispersion, surface modification, and interfacial compatibility with different PU systems, whether rigid, flexible, thermoplastic, or waterborne. The diversity of synthesis methods, CNF types, and functionalization approaches has hindered direct comparisons and limited the development of structure–property–application design guidelines. To overcome this issue, the review is structured around a property × process × application framework. It discusses how variables such as CNF content, particle morphology, and dispersion techniques affect microstructure formation, cell size, crosslinking behavior, and stability under environmental or mechanical stress. Applications including electromagnetic shielding, water treatment, thermal insulation, and biomedical use are critically examined to identify common design principles and current limitations. By consolidating the available data and highlighting inconsistencies and knowledge gaps, this review offers a structured roadmap for advancing the field of PU/CNF composites toward standardized, scalable, and application-oriented development.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"197 ","pages":"Article 113968"},"PeriodicalIF":5.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145841052","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}