Journal of Materials Chemistry C最新文献

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Spinel CoFe2O4: a room temperature magnetic semiconductor with optical transparency† 尖晶石 CoFe2O4:一种具有光学透明性的室温磁性半导体†。
IF 5.7 2区 材料科学
Journal of Materials Chemistry C Pub Date : 2024-09-23 DOI: 10.1039/D4TC01607F
Imran Khan and Jisang Hong
{"title":"Spinel CoFe2O4: a room temperature magnetic semiconductor with optical transparency†","authors":"Imran Khan and Jisang Hong","doi":"10.1039/D4TC01607F","DOIUrl":"https://doi.org/10.1039/D4TC01607F","url":null,"abstract":"<p >Finding a suitable ferromagnetic transparent semiconducting material is of utmost importance for the development of advanced devices with unique functionalities. Herein, the electronic, magnetic, and optical attributes of bulk and (111) surfaces of cobalt ferrite (CFO) are comprehensively explored through rigorous first-principles calculations. Bulk CFO and (111) thin films of thickness 1-unit cell (1UC) and 2-unit cell (2UC) with Fe terminations have ferrimagnetic semiconducting behavior with band gaps of 1.82 eV (bulk), 0.64 eV (1UC) and 0.54 eV (2UC). Bulk CFO displays an in-plane magnetic anisotropy energy of −35 μeV per atom, whereas both 1UC and 2UC structures with Fe terminations exhibit −60 and −91 μeV per atom. Bulk CFO has a Curie temperature (<em>T</em><small><sub>C</sub></small>) of 843 K, and the critical temperature is suppressed in thin films. Nonetheless, we still find a Cuire temperature higher than room temperature. For instance, the calculated Curie temperature is 471 K and 582 K for 1UC and 2UC films with Fe terminations. Besides, the 1UC and 2UC thin films of CFO show optical transparency in the visible range with a transmittance of around ∼94 to 96%. These findings suggest the potential of the CFO bulk and surfaces for application in spintronic and optoelectronic devices at elevated temperatures.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":null,"pages":null},"PeriodicalIF":5.7,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142595227","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}
引用次数: 0
Development point-of-care based lateral flow biosensor for the rapid detection of exosomes of subarachnoid hemorrhage patients† 开发用于快速检测蛛网膜下腔出血患者外泌体的基于护理点的侧流生物传感器†。
IF 5.7 2区 材料科学
Journal of Materials Chemistry C Pub Date : 2024-09-23 DOI: 10.1039/D4TC02620A
Mengyue Wang, Yanjiao Wang, Chengcheng Wang, Qingbin Ni, Peng Zhao, Baoliang Sun and Ying Wang
{"title":"Development point-of-care based lateral flow biosensor for the rapid detection of exosomes of subarachnoid hemorrhage patients†","authors":"Mengyue Wang, Yanjiao Wang, Chengcheng Wang, Qingbin Ni, Peng Zhao, Baoliang Sun and Ying Wang","doi":"10.1039/D4TC02620A","DOIUrl":"https://doi.org/10.1039/D4TC02620A","url":null,"abstract":"<p >Exosomes are extracellular vesicles with diameters ranging from 30–200 nm, and the biomolecules contained in exosomes have been used as biomarkers for the diagnosis and prognosis of certain diseases. Despite their increasingly recognized relevance as biomarkers, traditional strategies to achieve simple, sensitive, and accurate detection of exosomes remain a challenge due to the limitations of cumbersome separation and analysis of exosome-containing samples. We successfully developed a new lateral flow assay (LFA) for accurate quantification of plasma-derived exosomes in patients with subarachnoid hemorrhage (SAH). In this study, based on an ultrasensitive and simple surface-enhanced Raman scattering (SERS) strategy, we accurately captured membrane proteins in exosome samples by preparing 4-MPA antibody-modified Au–Ag nanoshuttles (Au–Ag NSs) as SERS probes on LFA strips to achieve dual detection of target proteins. The strategy had good stability and sensitivity with the limit of detection (LOD) of 0.7 × 10<small><sup>4</sup></small> particles per mL for CD9 and CD81. Regarding our findings of LFA using Au–Ag NSs, this platform can be used as a tool for accurate, rapid and real-time exosome detection with high sensitivity and quantification.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":null,"pages":null},"PeriodicalIF":5.7,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142565704","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}
引用次数: 0
A multiple soliton state erbium-doped fiber laser based on a MoS2/C saturable absorber 基于 MoS2/C 可饱和吸收体的多重孤子态掺铒光纤激光器
IF 5.7 2区 材料科学
Journal of Materials Chemistry C Pub Date : 2024-09-23 DOI: 10.1039/D4TC02121E
Shuaimeng Li, Xinlei Gao, Xinxin Shang, Weiyu Fan, Yu Wei, Hao Tan, Yunrui Wei, Caixun Bai, Guomei Wang, Wenfei Zhang, Shenggui Fu, Huanian Zhang, Nannan Xu and Cheng Lu
{"title":"A multiple soliton state erbium-doped fiber laser based on a MoS2/C saturable absorber","authors":"Shuaimeng Li, Xinlei Gao, Xinxin Shang, Weiyu Fan, Yu Wei, Hao Tan, Yunrui Wei, Caixun Bai, Guomei Wang, Wenfei Zhang, Shenggui Fu, Huanian Zhang, Nannan Xu and Cheng Lu","doi":"10.1039/D4TC02121E","DOIUrl":"https://doi.org/10.1039/D4TC02121E","url":null,"abstract":"<p >Transition metal dihalide (TMD) heterojunction materials possess distinct advantages in the field of optoelectronics, which has resulted in their extensive research in recent years. In this work, MoS<small><sub>2</sub></small>/C heterojunctions were synthesized using a hydrothermal method and deposited onto a tapered fiber with a diameter of 10.93 μm to form saturable absorbers (SAs) using photodeposition. The integration of MoS<small><sub>2</sub></small>/C SA into an erbium-doped fiber laser (EDFL) enabled the realization of multiple stable and switchable mode-locking states under different dispersion conditions, including conventional solitons, bound-state solitons, and higher-order harmonic mode-locking. Among them, conventional solitons could be realised in the range of dispersion from −0.303 ps<small><sup>2</sup></small> to −1.18 ps<small><sup>2</sup></small>, with the narrowest pulse width reaching up to 856 fs. Double-soliton bound states up to four-soliton bound states could be realized at a dispersion of −0.303 ps<small><sup>2</sup></small>. At a dispersion value of −0.734 ps<small><sup>2</sup></small>, a variety of higher-order harmonics could be achieved, with up to 88th harmonic mode-locking exhibiting a frequency of 499.7 MHz. These results demonstrate that MoS<small><sub>2</sub></small>/C exhibits excellent nonlinear optical modulation properties and holds promise as a broadband nonlinear optical material.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":null,"pages":null},"PeriodicalIF":5.7,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142565722","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}
引用次数: 0
From a simple push–pull dye to a broad-band absorbing and photoconducting material by assembly with CuBr† 通过与 CuBr† 组装,从简单的推拉染料变为宽带吸收和光导材料
IF 5.7 2区 材料科学
Journal of Materials Chemistry C Pub Date : 2024-09-20 DOI: 10.1039/D4TC03160A
Léo Boivin, Élodie V. d’Astous, Adrien Schlachter, Daniel Fortin, Paul-Ludovic Karsenti, Christophe Lescop, Philippe Dauphin-Ducharme and Pierre D. Harvey
{"title":"From a simple push–pull dye to a broad-band absorbing and photoconducting material by assembly with CuBr†","authors":"Léo Boivin, Élodie V. d’Astous, Adrien Schlachter, Daniel Fortin, Paul-Ludovic Karsenti, Christophe Lescop, Philippe Dauphin-Ducharme and Pierre D. Harvey","doi":"10.1039/D4TC03160A","DOIUrl":"https://doi.org/10.1039/D4TC03160A","url":null,"abstract":"<p >A thermally and electrochemically stable 2D coordination polymer (CP) of formula [Cu<small><sub>2</sub></small>Br<small><sub>2</sub></small><strong>L</strong><small><sub>2</sub></small>]<small><sub><em>n</em></sub></small> (<strong>UDS-6</strong>) has been designed using the push–pull chromophore ligand 2-(9<em>H</em>-fluorenylidene)malononitrile (<strong>L</strong>) and the modest and yet non-innocent CuBr salt. Its X-ray structure reveals a series of piled 2D-layers separated by ∼3.55 Å, inside which π-stacked <strong>L</strong><small><sub>2</sub></small> pairs are placed in a head-to-tail conformation (interplanar <strong>L⋯L</strong> distance is ∼3.41 Å) and assembled by (C<img>N)<small><sub>2</sub></small><strong>Cu(μ-Br)2Cu</strong>(N<img>C)<small><sub>2</sub></small> rhomboids as secondary building units (SBUs) where each nitrile fragment links different <strong>L</strong>'s. <strong>UDS-6</strong> exhibits several interesting photonic properties such as a large absorption spectrum extending to ∼1700 nm, a near-infrared (NIR) and anti-Kasha emission (<em>λ</em><small><sub>em</sub></small> ∼ 1000 nm), exciton migration across the solid and photoconductivity, all of which drastically differ from those of <strong>L</strong> in the solid state (absorption extends to ∼600 nm, <em>λ</em><small><sub>em</sub></small> ∼ 700 nm, and <strong>L</strong> is not a photoconductor). Density functional theory (DFT) computations indicate that the lowest energy excited states are metal-halide-to-ligand charge transfer (MXLCT) states where the electron rich Cu<small><sub>2</sub></small>Br<small><sub>2</sub></small> units and the electron withdrawing <strong>L</strong> act as the electron density donor and acceptor, respectively. <strong>UDS-6</strong> is a photoconductor on its own and a mechanism study reveals the presence of photo-induced electron transfer (ET) in a 1 : 1 blend composed of tetraphenylporphyrinzinc(<small>II</small>), ZnTPP, a well-known electron donor, and <strong>L</strong> within the structure of <strong>UDS-6</strong> with a rate, <em>k</em><small><sub>ET</sub></small>, of 5.4 × 10<small><sup>7</sup></small> s<small><sup>−1</sup></small>, which assigns <strong>L</strong> as the electron acceptor and consequently the charge carrier in <strong>UDS-6</strong>.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":null,"pages":null},"PeriodicalIF":5.7,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142518290","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}
引用次数: 0
Efficient, stable, and transparent photovoltaic cells with segment-patterned micro-cavity cathodes† 采用分段式微空腔阴极的高效、稳定和透明光伏电池†。
IF 5.7 2区 材料科学
Journal of Materials Chemistry C Pub Date : 2024-09-20 DOI: 10.1039/D4TC02370F
I-Sheng Hsu, Chih-Chien Lee, Ssu-Yung Chung, Kasimayan Uma and Shun-Wei Liu
{"title":"Efficient, stable, and transparent photovoltaic cells with segment-patterned micro-cavity cathodes†","authors":"I-Sheng Hsu, Chih-Chien Lee, Ssu-Yung Chung, Kasimayan Uma and Shun-Wei Liu","doi":"10.1039/D4TC02370F","DOIUrl":"https://doi.org/10.1039/D4TC02370F","url":null,"abstract":"<p >Transparent photovoltaic cells (TPVs) have garnered significant interest due to their versatile applications, ranging from smart windows and vehicle integration to agricultural and premium consumer devices. In this study, we introduce a highly efficient fabrication technique for TPVs that effectively addresses the thermal management challenges typically encountered during device processing. By integrating nanosecond laser processing with spatially segmented photovoltaic technologies, we successfully produce TPVs that maintain stable chromaticity, with no deviation in Commission Internationale de l’Éclairage (CIE) color coordinates. While femtosecond lasers offer higher precision, their cost remains prohibitive. Nanosecond lasers, though more economical, introduce thermal effects that adversely affect both device efficiency and longevity. To overcome these limitations, we replaced conventional thick silver electrodes with a micro-cavity cathode comprising a 90 nm MgF<small><sub>2</sub></small> layer, resulting in a marked enhancement in processing quality. This novel approach yielded TPVs with a power conversion efficiency (PCE) of 4.51%, an average visible transmittance (AVT) of 51.86%, and a light utilization efficiency (LUE) of 2.34%. Furthermore, device operational stability improved substantially, with the <em>T</em><small><sub>80</sub></small> lifetime extended from 483 hours (thick Ag cathode) to 727 hours (micro-cavity cathode). These results underscore the potential of this methodology to advance TPV technology towards scalable manufacturing and widespread commercial adoption.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":null,"pages":null},"PeriodicalIF":5.7,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142565694","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}
引用次数: 0
Unveiling the electrical performance of flash-sintered potassium sodium niobate† 揭示闪速烧结铌酸钠钾的电气性能†
IF 5.7 2区 材料科学
Journal of Materials Chemistry C Pub Date : 2024-09-20 DOI: 10.1039/D4TC01702A
Alexander Tkach, Ricardo Serrazina, Luis Pereira, Ana M. O. R. Senos and Paula M. Vilarinho
{"title":"Unveiling the electrical performance of flash-sintered potassium sodium niobate†","authors":"Alexander Tkach, Ricardo Serrazina, Luis Pereira, Ana M. O. R. Senos and Paula M. Vilarinho","doi":"10.1039/D4TC01702A","DOIUrl":"https://doi.org/10.1039/D4TC01702A","url":null,"abstract":"<p >In the context of sensor, actuator, and energy harvesting applications, lead-free ferroelectric K<small><sub>0.5</sub></small>Na<small><sub>0.5</sub></small>NbO<small><sub>3</sub></small> (KNN) ceramics offer several advantages, including a high transition temperature and an elevated piezoelectric coefficient. However, producing single-phase KNN ceramics at a low thermal budget requires alternative sintering processes such as electric-field- and current-assisted flash sintering. Furthermore, the electrical properties of flash-sintered ferroelectrics are rarely disclosed. Here, based on systematic dielectric and ferroelectric, impedance spectroscopy and DC conductivity measurements, we demonstrate that the electrical performance of flash-sintered KNN is quite dependent on its thermal history, in contrast to the conventionally sintered one. Simultaneously, we demonstrate the successful production of high-performance KNN ceramics with high polarization, dielectric permittivity, Curie temperature, and piezoelectric coefficient using flash sintering, coupled with a carefully chosen post-sintering electrode curing step. Supported by impedance spectroscopy results, indicative of enhanced oxygen vacancy content in flash-sintered KNN, we postulate that post-sintering heat treatment and low-thermal-budget flash sintering are equally critical for KNN applications, complementing the benefits of reducing lattice defects and enhancing electroceramic performance. Our results demonstrate a pathway towards alternative sintering of electroceramics and offer opportunities to control performance.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":null,"pages":null},"PeriodicalIF":5.7,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142518291","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}
引用次数: 0
Fabrication of effect pigments with full visible photonic crystal colors via the shear-induced assembly of multinary colloidal nanoparticles† 通过二元胶体纳米颗粒的剪切诱导组装,制造出具有全可见光子晶体颜色的效果颜料†。
IF 5.7 2区 材料科学
Journal of Materials Chemistry C Pub Date : 2024-09-20 DOI: 10.1039/D4TC02761B
Qilin Guo, Huateng Li, Xiuli Wang and Changchun Wang
{"title":"Fabrication of effect pigments with full visible photonic crystal colors via the shear-induced assembly of multinary colloidal nanoparticles†","authors":"Qilin Guo, Huateng Li, Xiuli Wang and Changchun Wang","doi":"10.1039/D4TC02761B","DOIUrl":"https://doi.org/10.1039/D4TC02761B","url":null,"abstract":"<p >Shear-induced assembly technique offers unprecedented scalability in the preparation of versatile photonic crystal materials. Herein, different-sized colloidal nanoparticles were placed within a multicomponent blending system for effective shear co-assembly to enable precise tuning of the photonic band gap and structural colors across the whole visible spectrum of light. The obtained equilibrium structures, such as the crystalline or amorphous states, could be well traded-off for various optical appearances by varying the relative ratios of the blends. A coefficient of variation (CV) value less than 0.3 is crucial to balance strain energy during the cooperative working assembly for manipulating complex functional spatial nanostructures with greatly reduced requirements of colloidal monodispersity. The resultant photonic materials could be further processed into diverse effect pigments with customized and selective optical performances for alternative colorants. This work provides valuable insights into predicting specific visible spectral wavelengths and optical characteristics by controlling photonic nanoarrays through a simple modulation of the composition of multivariate blends.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":null,"pages":null},"PeriodicalIF":5.7,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142595231","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}
引用次数: 0
Stacking-tuned quantum anomalous Hall effect and multi-phase transition in Kagome lattice V2Se3† 鹿目晶格 V2Se3† 中的堆叠调谐量子反常霍尔效应和多相转变
IF 5.7 2区 材料科学
Journal of Materials Chemistry C Pub Date : 2024-09-20 DOI: 10.1039/D4TC03058C
Lixin Zhang, Naibin Wang, Xiuwen Zhao, Guichao Hu, Junfeng Ren and Xiaobo Yuan
{"title":"Stacking-tuned quantum anomalous Hall effect and multi-phase transition in Kagome lattice V2Se3†","authors":"Lixin Zhang, Naibin Wang, Xiuwen Zhao, Guichao Hu, Junfeng Ren and Xiaobo Yuan","doi":"10.1039/D4TC03058C","DOIUrl":"https://doi.org/10.1039/D4TC03058C","url":null,"abstract":"<p >The physical properties induced by layer stacking in two dimensional materials are fascinating. Here, a hexagonal Kagome lattice V<small><sub>2</sub></small>Se<small><sub>3</sub></small> is constructed to investigate the dependence of the quantum anomalous Hall effect (QAHE) and the phase transition on the different stacking. Based on first principles calculations, the tight-binding model, and the irreducible representations, it is found that QAHE with a Chern number of 1 can be realized in the V<small><sub>2</sub></small>Se<small><sub>3</sub></small> monolayer. While the V<small><sub>2</sub></small>Se<small><sub>3</sub></small> bilayer is constructed, the interlayer interaction affects the Dirac cone, so QAHE with Chern number changes from −1 to 2 can be obtained by changing the different stacking patterns. On the other hand, applying biaxial tensile strain and changing stacking patterns in the V<small><sub>2</sub></small>Se<small><sub>3</sub></small> bilayer will affect the d orbitals of the V atoms. In bilayer V<small><sub>2</sub></small>Se<small><sub>3</sub></small>, applying biaxial tensile strain affects the d orbitals of the V atoms that constitute the Dirac cone, and then a topological phase transition appears. Moreover, changing the stacking patterns induces the hybridization competition of the d orbitals, which leads to a magnetic phase transition. Constructing a Kagome bilayer and changing their stacking patterns paves a pathway in exploring quantum effects of topology and magnetism in layered materials.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":null,"pages":null},"PeriodicalIF":5.7,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142518293","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}
引用次数: 0
In situ preparation of highly luminescent Sb3+/Mn2+ co-doped Cs2KInCl6 lead-free double perovskites in a PVDF matrix and application to white light emitting diodes and anti-counterfeiting† 在聚偏二氟乙烯基质中原位制备高发光 Sb3+/Mn2+共掺杂 Cs2KInCl6 无铅双包晶并将其应用于白光发光二极管和防伪†。
IF 5.7 2区 材料科学
Journal of Materials Chemistry C Pub Date : 2024-09-20 DOI: 10.1039/D4TC03527E
Yongrun Dong, Wen Li, Tao Huang, Shuaigang Ge, Linghang Kong, Chuang Ning, Zequan Li, Wei Gao and Bingsuo Zou
{"title":"In situ preparation of highly luminescent Sb3+/Mn2+ co-doped Cs2KInCl6 lead-free double perovskites in a PVDF matrix and application to white light emitting diodes and anti-counterfeiting†","authors":"Yongrun Dong, Wen Li, Tao Huang, Shuaigang Ge, Linghang Kong, Chuang Ning, Zequan Li, Wei Gao and Bingsuo Zou","doi":"10.1039/D4TC03527E","DOIUrl":"https://doi.org/10.1039/D4TC03527E","url":null,"abstract":"<p >Recently, lead-free double perovskites have been regarded as a promising alternative to lead halide perovskites due to their wide emission band, and environmental protection and stability properties, and are expected to become a series of rising star materials in the lighting field. However, currently, the growth of most lead-free double perovskites occurs in the strong acid environment, which not only brings high cost and environment risk, but also makes it hard to realize large-scale applications with powder products. Herein, we apply a strategy of <em>in situ</em> synthesis of lead-free double perovskites in a polymer matrix by using a small amount of precursors and relatively friendly DMSO solvent to obtain efficiently luminescent Sb<small><sup>3+</sup></small>/Mn<small><sup>2+</sup></small> co-doped Cs<small><sub>2</sub></small>KInCl<small><sub>6</sub></small>/PVDF composite films in a large-area. The co-doping of Mn<small><sup>2+</sup></small>/Sb<small><sup>3+</sup></small> into this inorganic double perovskite matrix makes microcrystals with good crystallinity and size distribution in this polymer. The as prepared co-doping composite film with Mn/Sb feeding ratio 16 : 1 shows the brightest white light emission under 320 nm excitation, with a photoluminescence quantum yield (PLQY) as high as 86.98%. The energy transfer (E-T) from the charge-transfer band to the triplet self-trapped exciton (STE) around Sb<small><sup>3+</sup></small> and then to the ferromagnetic (FM) coupled Mn<small><sup>2+</sup></small> pair 3d state was confirmed by the temperature-dependent PL spectra and density functional theory calculations. Finally, a single-compound white light emitting diode with chromatic coordinates of (0.31, 0.33) and fluorescent anti-counterfeiting labels could be fabricated based on this composite film with the best white emission. This work provides a new strategy for the application of lead-free double perovskites in the fields of lighting and anti-counterfeiting.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":null,"pages":null},"PeriodicalIF":5.7,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142595209","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}
引用次数: 0
Cuprous-based layered single-crystalline scintillators for X-ray detection and imaging† 用于 X 射线探测和成像的铜基层状单晶闪烁体†。
IF 5.7 2区 材料科学
Journal of Materials Chemistry C Pub Date : 2024-09-20 DOI: 10.1039/D4TC03080J
Yuke Zhao, Danping Chen, Haitao Tang, Hailin Liu, Yong Liu, Yangyang Dang and Qianqian Lin
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