Small最新文献_第7页

Dual-Source Evaporation Processed Novel NaBiS2 Absorber Material for Eco-Friendly and Stable Photovoltaics

IF 13.3 2区材料科学

Small Pub Date : 2025-01-28 DOI: 10.1002/smll.202411032

Zijun Yi, Long Zhang, Wenguang Zhang, Yihuai Huang, Yuchen Xiong, Changkai Huang, Guibin Shen, Abdul Basit, Xuehong Ren, Yubo Luo, Xin Li, Junyou Yang

{"title":"Dual-Source Evaporation Processed Novel NaBiS2 Absorber Material for Eco-Friendly and Stable Photovoltaics","authors":"Zijun Yi, Long Zhang, Wenguang Zhang, Yihuai Huang, Yuchen Xiong, Changkai Huang, Guibin Shen, Abdul Basit, Xuehong Ren, Yubo Luo, Xin Li, Junyou Yang","doi":"10.1002/smll.202411032","DOIUrl":"https://doi.org/10.1002/smll.202411032","url":null,"abstract":"Exploring and developing novel, low-cost, and environmentally friendly photovoltaic materials is a vital trend in the evolution of solar cell technology. The distinctive properties of alkali bismuth ternary sulfides have spurred increased research and application in optoelectronic devices. In this study, a novel method is reported for preparing NaBiS2 film by sequential thermal evaporation of Na2S and Bi2S3 layers followed by heating post-treatment for the first time, as well as the preparation of solar cells with NaBiS2 as the light-absorbing layer. Based on X-ray diffraction and Raman analysis, the prepared NaBiS2 film is confirmed to be a single-phase material, without the presence of any secondary phases. Additionally, the photoelectric characteristics of NaBiS2 are investigated and incorporated this material into solar cell devices. By optimizing the device architecture, the solar cell utilizing NaBiS2 as the light-absorbing layer achieved a photoelectric conversion efficiency of 2.91%, which is the highest efficiency reported for NaBiS2 solar cells up to now. The research has provided a valuable perspective and path for the development of novel photovoltaic materials in the solar cell field.","PeriodicalId":228,"journal":{"name":"Small","volume":"59 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143050891","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 AFM-Compatible Hydrogel Probe to Achieve Hydration Superlubrication in Salt Solutions

IF 13.3 2区材料科学

Small Pub Date : 2025-01-28 DOI: 10.1002/smll.202411253

Zhuolin Wu, Rui Zhang, Jinjin Li

{"title":"Fabrication of AFM-Compatible Hydrogel Probe to Achieve Hydration Superlubrication in Salt Solutions","authors":"Zhuolin Wu, Rui Zhang, Jinjin Li","doi":"10.1002/smll.202411253","DOIUrl":"https://doi.org/10.1002/smll.202411253","url":null,"abstract":"Hydrogels demonstrate effective lubricating properties, but the underlying mechanisms at the nanoscale remain elucidated. In this study, a novel strategy is proposed by fabricating the hydrogel probes compatible with atomic force microscopy (AFM) to establish a superlubrication system based on the hydration interactions. The probe is made of polyethylene glycol diacrylate (PEGDA)-based hydrogel microspheres, which can achieve an extremely low friction coefficient of 0.0014 when sliding on the mica surface in NaCl solution. The friction coefficients in salt solutions sequence μ(NaCl) < 0.01 < μ(KCl) < μ(LiCl), which contradicts the sequence based on the ion hydration capacity (K+ < Na+ < Li+), suggesting that the hydrogel-based lubrication systems are governed by the interplay between ion hydration lubrication and ions-polymer interactions simultaneously. The observed superlubrication in NaCl solution is ascribed to the superior hydration capacity of Na+ ions, which forms a stable and smooth hydration layer within the contact zone. This work provides new avenues for AFM-based hydrogel studies, and also significantly advances the comprehension of hydrogel lubrication mechanisms at the nanoscale","PeriodicalId":228,"journal":{"name":"Small","volume":"9 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143050899","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

Enhancing Zn Deposition Reversibility on MXene Current Collectors by Forming ZnF2-Containing Solid-Electrolyte Interphase for Anode-Free Zinc Metal Batteries

IF 13.3 2区材料科学

Small Pub Date : 2025-01-28 DOI: 10.1002/smll.202407226

Chaofan Chen, Rui Guo, Swapna Ganapathy, Baukje Terpstra, Hao Wang, Zhibin Lei, Frans Ooms, Bart Boshuizen, Marnix Wagemaker, Lars J. Bannenberg, Xuehang Wang

{"title":"Enhancing Zn Deposition Reversibility on MXene Current Collectors by Forming ZnF2-Containing Solid-Electrolyte Interphase for Anode-Free Zinc Metal Batteries","authors":"Chaofan Chen, Rui Guo, Swapna Ganapathy, Baukje Terpstra, Hao Wang, Zhibin Lei, Frans Ooms, Bart Boshuizen, Marnix Wagemaker, Lars J. Bannenberg, Xuehang Wang","doi":"10.1002/smll.202407226","DOIUrl":"https://doi.org/10.1002/smll.202407226","url":null,"abstract":"Anode-free aqueous zinc metal batteries (AZMBs) offer significant potential for energy storage due to their low cost and environmental benefits. Ti3C2Tx MXene provides several advantages over traditional metallic current collectors like Cu and Ti, including better Zn plating affinity, lightweight, and flexibility. However, self-freestanding MXene current collectors in AZMBs remain underexplored, likely due to challenges with Zn deposition reversibility. This study investigates the combination of a Ti3C2Tx self-freestanding film with advanced electrolyte engineering, specifically examining the effects of Li-salt and propylene carbonate (PC) as additives on Zn plating reversibility. While using Li+ ions as an additive alone facilitates uniform Zn deposition on bulk metals through the electrostatic shielding effect, the addition of Li-salt negatively impacts Zn plating uniformity on Ti3C2Tx. Meanwhile, using PC additive alone forms an organic SEI layer on Ti3C2Tx and causes Zn agglomeration. The use of both additives together results in a ZnF2-containing hybrid SEI layer with improved interfacial kinetics, promoting more uniform Zn deposition. This approach achieves an average Coulombic efficiency (CE) of 96.8% over 150 cycles (a maximum CE of 97.8%). The study highlights the strategic difference in electrolyte design, emphasizing the need for tailored approaches to optimize Zn deposition on MXenes, contrasting with traditional metallic current collectors.","PeriodicalId":228,"journal":{"name":"Small","volume":"23 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143050901","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

Activating Reversible V4+/V5+ Redox Couple in NASICON-Type Phosphate Cathodes by High Entropy Substitution for Sodium-Ion Batteries

IF 13.3 2区材料科学

Small Pub Date : 2025-01-28 DOI: 10.1002/smll.202500566

Siya Wang, Jin Bai, Peiyao Wang, Yunjie Mao, Ke Xiao, Yuanyuan Liu, Shiyu Qiu, Xuebin Zhu, Bangchuan Zhao, Yuping Sun

{"title":"Activating Reversible V4+/V5+ Redox Couple in NASICON-Type Phosphate Cathodes by High Entropy Substitution for Sodium-Ion Batteries","authors":"Siya Wang, Jin Bai, Peiyao Wang, Yunjie Mao, Ke Xiao, Yuanyuan Liu, Shiyu Qiu, Xuebin Zhu, Bangchuan Zhao, Yuping Sun","doi":"10.1002/smll.202500566","DOIUrl":"https://doi.org/10.1002/smll.202500566","url":null,"abstract":"Vanadium-based Na superionic conductor (NASICON) type materials (NaxVM(PO4)3, M = transition metals) have attracted extensive attention when used as sodium-ion batteries (SIBs) cathodes due to their stable structures and large Na+ diffusion channels. However, the materials have poor electrical conductivity and mediocre energy density, which hinder their practical applications. Activating the V4+/V5+ redox couple (V4+/V5+≈4.1 V vs Na+/Na) is an effective way to elevate the energy density of SIBs, whereas the irreversible phase transition of V4+/V5+ and severe structural distortion will inevitably result in fast capacity fading and unsatisfactory rate capability. Herein, a high entropy regulation strategy is proposed to optimize the detailed crystal structure and improve the reversibility of crystalline phase transformation and electrical conductivity of the material. With the activated reversible V4+/V5+ redox couple, stable structure, and fast electrochemical kinetics, the high entropy material Na3.2V1.5Fe0.1Al0.1Cr0.1Mn0.1Cu0.1(PO4)3 (NVMP-HE) exhibits an outstanding electrochemical performance with highly reversible specific capacity of 120.1 mAh g−1 at 0.1 C and excellent cycling stability (92.4% retention after 1000 cycles at 20 C). Besides, the in situ X-ray diffraction (XRD) measurement reveals that a smooth three-phase transition reaction is involved in this high-entropy cathode and the existence of mesophase facilitates a fast phase transition.","PeriodicalId":228,"journal":{"name":"Small","volume":"21 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143050902","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

{110} Surface-Exposed Bi3.15Nd0.85Ti3O12 Ferroelectric Nanosheet Arrays on Porous Ceramics as Efficient and Recyclable Piezo-Photocatalysts

IF 13.3 2区材料科学

Small Pub Date : 2025-01-27 DOI: 10.1002/smll.202410145

Yan Zhao, Yan Zhang, Xuefan Zhou, Kaiyu Feng, Qianqian Xu, Hanyu Gong, Di Zhai, Mingyang Yan, Dou Zhang, Chris Bowen

{"title":"{110} Surface-Exposed Bi3.15Nd0.85Ti3O12 Ferroelectric Nanosheet Arrays on Porous Ceramics as Efficient and Recyclable Piezo-Photocatalysts","authors":"Yan Zhao, Yan Zhang, Xuefan Zhou, Kaiyu Feng, Qianqian Xu, Hanyu Gong, Di Zhai, Mingyang Yan, Dou Zhang, Chris Bowen","doi":"10.1002/smll.202410145","DOIUrl":"https://doi.org/10.1002/smll.202410145","url":null,"abstract":"Bismuth-layered ferroelectric nanomaterials exhibit great potential for piezo-photocatalysis. However, a major challenge lies in the difficulty of recovering the catalytic powders, raising concerns regarding secondary pollution of water. In this work, a novel hierarchical porous ferroelectric ceramic containing {110} surface-exposed Bi3.15Nd0.85Ti3O12 (BIT-Nd) nanosheet arrays is grown on a porous ceramic matrix for efficient and recyclable piezo-photocatalysis. By controlling the BIT-Nd loading level of the nanosheets, the piezo-photocatalytic degradation efficiency of a Rhodamine B(RhB) (C0 = 10 mg L−1) solution reached an optimum value of 97.1% in 100 min with a first-order kinetic rate constant, k, of up to 0.0321 min−1 in Bi3.15Nd0.85Ti3O12-20 (BITNd-20) with a mass ratio of hydrothermal products to ceramics of 20%. In the presence of BITNd-20, a surprising H2 yield rate of 130 µmol·h−1 is achieved without using any cocatalyst or scavenger. Specially, the beneficial role of snowflake structures on piezoelectric potential amplification and introducing nanosheets with exposed {110} surfaces on hydrogen evolution reaction (HER) activity, piezoelectric potential output, and catalytic performance of porous ceramics has been revealed. This unique design strategy provides a new approach to enhance the piezo-photocatalytic activity by addressing environmental issues and enhancing catalytic performance to yield cleaner energy.","PeriodicalId":228,"journal":{"name":"Small","volume":"28 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143044634","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

Hollow TiO2@TpPa S-Scheme Photocatalyst for Efficient H2O2 Production Through 1O2 in Deionized Water Using Phototautomerization

IF 13.3 2区材料科学

Small Pub Date : 2025-01-27 DOI: 10.1002/smll.202409079

Zicong Jiang, Jianjun Zhang, Bei Cheng, Yong Zhang, Jiaguo Yu, Liuyang Zhang

{"title":"Hollow TiO2@TpPa S-Scheme Photocatalyst for Efficient H2O2 Production Through 1O2 in Deionized Water Using Phototautomerization","authors":"Zicong Jiang, Jianjun Zhang, Bei Cheng, Yong Zhang, Jiaguo Yu, Liuyang Zhang","doi":"10.1002/smll.202409079","DOIUrl":"https://doi.org/10.1002/smll.202409079","url":null,"abstract":"Hydrogen peroxide (H2O2) production through photocatalytic O2 reduction reaction (ORR) is a mild and cost-efficient alternative to the anthraquinone oxidation strategy. Of note, singlet state oxygen (1O2) plays a crucial role in ORR. Herein, a hollow TiO2@TpPa (TOTP) S-scheme heterojunction by the Schiff base reactions involving 1,3,5-triformylphloroglucinol (Tp) and paraphenylenediamine (Pa) for efficient photocatalytic H2O2 production in deionized water has been developed. Upon irradiation, rapid phototautomerization of TaPa from enol to keto form expands π-electron delocalization, facilitating effective conversion of the triplet excited state and consequent generation of 1O2. This mechanism is supported by time-resolved electron paramagnetic resonance (EPR) spectral analysis. Additionally, density functional theory calculations, in situ irradiated X-ray photoelectron spectroscopy, and femtosecond transient absorption spectroscopy reveal superior separation of photogenerated carriers in the TOTP S-scheme composites. In deionized water, the TOTP2.4 S-scheme heterojunction exhibits exceptional H2O2 production activity, yielding 891 µmol g−1 h−1, underscoring the critical role of 1O2 in the process. This research offers insights into the S-scheme heterojunctions and emphasizes the pivotal role of 1O2 in enhancing H2O2 production efficiency.","PeriodicalId":228,"journal":{"name":"Small","volume":"45 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143044750","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

Catalytic Cu2O/Cu Site Trades off the Coupling and Etching Reactions of Carbon Intermediates for CO2-Assisted Graphene Synthesis

IF 13.3 2区材料科学

Small Pub Date : 2025-01-27 DOI: 10.1002/smll.202410365

Yifan Zhu, Congcong Ning, Yan Jin, Qian Yang, Xiangnan Gong, Baoshan Hu

{"title":"Catalytic Cu2O/Cu Site Trades off the Coupling and Etching Reactions of Carbon Intermediates for CO2-Assisted Graphene Synthesis","authors":"Yifan Zhu, Congcong Ning, Yan Jin, Qian Yang, Xiangnan Gong, Baoshan Hu","doi":"10.1002/smll.202410365","DOIUrl":"https://doi.org/10.1002/smll.202410365","url":null,"abstract":"In the chemical vapor deposition (CVD) synthesis of graphene, the surficial chemical state of the metal substrate has exerted key roles in all elemental reaction steps determining the growth mechanism of graphene. Herein, a CO2-participated annealing procedure is designed to construct catalytic Cu2O/Cu sites on Cu foil for the graphene CVD synthesis with CO2/CH4 as carbon sources. These Cu2O/Cu species can catalyze the CH4 decomposition and subsequent C─C coupling to form C2 intermediates for fast growth of monolayer hexagonal graphene domains with a diameter of ≈30 µm within 0.5 min. The graphene growth kinetics can be bidirectionally regulated merely with the variation of CO2 flow rate during annealing and growth stages, in association with the Cu+/Cu0 ratio, enabling simultaneous control over the size and shape of graphene domains. Density functional theory (DFT) calculations indicate that the catalytic Cu2O/Cu sites reduce the activation energy by ≈0.13 eV for the first dehydrogenation of CH4, allowing the growing rate of graphene driven by coupling of C2 intermediates faster than their etching rate by O-containing *O and *OH species. The work provides novel insights into heterostructured nano-catalyst consisting of zero valent metal and variably valent metal oxide that facilitate the controllable synthesis of graphene materials.","PeriodicalId":228,"journal":{"name":"Small","volume":"161 2 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143044408","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

Minimizing Zn Loss Through Dual Regulation for Reversible Zinc Anode Beyond 90% Utilization Ratio

IF 13.3 2区材料科学

Small Pub Date : 2025-01-27 DOI: 10.1002/smll.202411986

Yue Zhu, Haoyu Li, Xinyi Sun, Aoyuan Chen, Ruilin Hou, Ping He, Shaohua Guo, Haoshen Zhou

{"title":"Minimizing Zn Loss Through Dual Regulation for Reversible Zinc Anode Beyond 90% Utilization Ratio","authors":"Yue Zhu, Haoyu Li, Xinyi Sun, Aoyuan Chen, Ruilin Hou, Ping He, Shaohua Guo, Haoshen Zhou","doi":"10.1002/smll.202411986","DOIUrl":"https://doi.org/10.1002/smll.202411986","url":null,"abstract":"Large-scale energy storage devices experience explosive development in response to the increasing energy crisis. Zinc ion batteries featuring low cost, high safe, and environment friendly are considered promising candidates for next-generation energy storage devices. However, their practical application suffers from the limited anode lifespan under a high zinc utilization ratio, which can be attributed to aggravated Zn loss caused by zinc conversion reactions and “dead” Zn. Herein, n-propyl alcohol is reported to stabilize the Zn anode under the high depth of discharge through dual regulation of water activity inhibition and zinc-ion plating regulation. The modified electrolyte exhibits a 76.43% cut in corrosion current benefited from low water activity and benefits SEI surface. The “dead” Zn content is also reduced by 26 times as a result of dendrite-free zinc ion plating. Thus, the highly reversible zinc plating/stripping with 99.62% CE is achieved for ≈3600 cycles. Moreover, the lifespan of Zn/Zn cells is greatly increased even under a high depth of discharge (310 h, 90%DOD and 120 h, 95.18% DOD). In Zn/NH4V4O10 full cells, the improved anode reversibility enables a remarkable capacity retention of 92.16% after 400 cycles with a low N/P ratio of 2.5.","PeriodicalId":228,"journal":{"name":"Small","volume":"22 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143044760","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 Coordination Nanosystem Enables Endogenous Ferric Ion-Initiated Multi-Catalysis for Synergistic Tumor-Specific Ferroptosis and Gene Therapy

IF 13.3 2区材料科学

Small Pub Date : 2025-01-27 DOI: 10.1002/smll.202411440

Jiajie Chen, Yitong Wang, Zhibo Yang, Kai Tang, Xinchun Liu, Hongshi Ma, Huamao Ye, Chengtie Wu, Yufang Zhu

{"title":"A Coordination Nanosystem Enables Endogenous Ferric Ion-Initiated Multi-Catalysis for Synergistic Tumor-Specific Ferroptosis and Gene Therapy","authors":"Jiajie Chen, Yitong Wang, Zhibo Yang, Kai Tang, Xinchun Liu, Hongshi Ma, Huamao Ye, Chengtie Wu, Yufang Zhu","doi":"10.1002/smll.202411440","DOIUrl":"https://doi.org/10.1002/smll.202411440","url":null,"abstract":"Emerging evidence demonstrates that inducing ferroptosis, a nonapoptotic programmed cell death mode, holds significant potential for tumor treatment. However, current ferroptosis strategies utilizing exogenous Fenton-type heavy metal species or introducing glutathione (GSH)/glutathione peroxidase 4 (GPX4) suppressants are hampered by latent adverse effects toward organisms, while utilizing endogenous iron may cause undesirable tumor angiogenesis through specific signaling pathways. Here, a ferric ion (Fe3+)-responsive and DNAzyme-delivered coordination nanosystem (ZDD) is developed to achieve a novel scheme of synergistic tumor-specific ferroptosis and gene therapy, which modulates and harnesses the endogenous iron in tumors for inducing ferroptosis while intercepting tumor angiogenesis to enhance therapeutic efficacy. Profiting from the characteristic coordination structure and components, ZDD can not only specifically capture tumor endogenous Fe3+ into the tumor cells to promote the catalytic generation of hydroxyl radicals (·OH) and superoxide anions (O2·−) under acidic environment and the catalytic GSH oxidation, arousing potent ferroptotic cell death, but also effectively deliver specific DNAzyme and release abundant zinc ion (Zn2+) as a powerful cofactor to activate the biocatalytic cleavage of vascular endothelial growth factor receptor 2 (VEGFR2) gene for angiogenesis suppression. Ultimately, the ZDD-enabled synergistic therapy prominently inhibited tumor growth and prevented metastasis, representing a promising nanotherapeutic formula for safe and efficient tumor therapy.","PeriodicalId":228,"journal":{"name":"Small","volume":"28 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143044636","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

Ultrabright and Stable Red Perovskite Nanocrystals in Micro Light-Emitting Diodes Using Flow Chemistry System

IF 13.3 2区材料科学

Small Pub Date : 2025-01-27 DOI: 10.1002/smll.202410753

Yen-Huei Lin, Wen-Tse Huang, Loan Thi Ngo, Jiacheng Gong, Pei-Chi Hung, Xueyuan Chen, Ren-Jei Chung, Ru-Shi Liu

{"title":"Ultrabright and Stable Red Perovskite Nanocrystals in Micro Light-Emitting Diodes Using Flow Chemistry System","authors":"Yen-Huei Lin, Wen-Tse Huang, Loan Thi Ngo, Jiacheng Gong, Pei-Chi Hung, Xueyuan Chen, Ren-Jei Chung, Ru-Shi Liu","doi":"10.1002/smll.202410753","DOIUrl":"https://doi.org/10.1002/smll.202410753","url":null,"abstract":"Addressing the challenges of the efficiency and stability of red perovskite nanocrystals is imperative for the successful deployment of these materials in displays and lighting applications. the structural dynamic changes of red perovskite quantum dots (PQDs) are explored using a flow chemistry system to solve the above hurdles. First, the ultrabright red-emitting PQDs of CsPb(Br,I)3 are achieved by adjusting ligand distribution (oleic acid and oleyamine) in combination with different flow rates and equivalence ratios. The PQDs exhibit an impressive photoluminescence quantum yield (PLQY) of 95%. In addition, as mentioned in numerous previous studies, the severe instability of mixed halide perovskites is due to halide immigration. Therefore, in this paper, zinc, which has a lower dissociation energy than lead is utilized, as a reagent to provide more halide ions in the synthesis to enhance the stability of PQDs. As a result, a CsPb(Br,I)3@Cs4Pb(Br,I)6 core-shell structure with outstanding stability and 92% PLQY is obtained. The simple method for synthesizing the core-shell structure of CsPb(Br,I)3@Cs4Pb(Br,I)6 paves the way for the production of perovskite micro light-emitting diodes for commercial applications.","PeriodicalId":228,"journal":{"name":"Small","volume":"5 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143044410","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