Small Methods最新文献

Surface Donor-Acceptor Dipole Coupling for Enhanced Conductance and Photoresponse in SnO₂ Semiconductor. 表面施主-受主偶极子耦合增强SnO2半导体的电导和光响应。

IF 9.1 2区材料科学

Small Methods Pub Date : 2026-05-10 DOI: 10.1002/smtd.70705

Wen-Yan Xu, Yi-Lin Gao, Shu-Juan Lin, Li-Zhen Cai, Ming-Sheng Wang, Guo-Cong Guo

{"title":"Surface Donor-Acceptor Dipole Coupling for Enhanced Conductance and Photoresponse in SnO2 Semiconductor.","authors":"Wen-Yan Xu, Yi-Lin Gao, Shu-Juan Lin, Li-Zhen Cai, Ming-Sheng Wang, Guo-Cong Guo","doi":"10.1002/smtd.70705","DOIUrl":"https://doi.org/10.1002/smtd.70705","url":null,"abstract":"Tin dioxide (SnO2) has achieved commercial success in gas sensing and holds significant potential in energy storage and photocatalysis. However, its practical performance is limited by issues such as low intrinsic conductivity, rapid recombination of photogenerated carriers, and narrow spectral response range. To address these challenges, this study proposes a surface donor-acceptor dipole coupling enhancement strategy based on an electron relay. By modifying the SnO2 surface with highly redox-active viologen units (PV2 +/PV0, PV = phenyl viologen, where \"P\" denotes the phenyl group and \"V\" denotes the viologen cation), an interfacial dipole coupling is established to form a charge transfer complex (CTC), thereby non-invasively and synergistically improving the overall performance of SnO2 under mild conditions. The results demonstrate that this strategy significantly optimizes the optoelectronic properties of SnO2: conductivity increases by approximately 38 times (PV2 +) and 14 times (PV0), responsivity to 375 nm ultraviolet light is enhanced by 82 and 37 times, respectively, and the photoresponse is broadened from ultraviolet to near-infrared (up to 760 nm and 1000 nm), greatly improving solar light capture and utilization efficiency. This work provides a new approach to optimizing SnO2 performance and complements existing methods, promoting its applications in sensing, energy storage, and photocatalysis.","PeriodicalId":229,"journal":{"name":"Small Methods","volume":" ","pages":"e70705"},"PeriodicalIF":9.1,"publicationDate":"2026-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147863376","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

Molecular Peripheral Electronegativity Modulates Crystallization Kinetics for Efficient Organic Solar Cells. 分子外周电负性调节高效有机太阳能电池的结晶动力学。

IF 9.1 2区材料科学

Small Methods Pub Date : 2026-05-08 DOI: 10.1002/smtd.70658

Renqiang Shao, Xiaoning Wang, Jianxiao Wang, Yang Jing, Qinyong He, Zixiang Chen, Liang Shi, Hao Lu, Cheng Sun, Fuzhen Bi, Shuangshuang Li, Qijun Ren, Chunming Yang, Yonghai Li, Xichang Bao

{"title":"Molecular Peripheral Electronegativity Modulates Crystallization Kinetics for Efficient Organic Solar Cells.","authors":"Renqiang Shao, Xiaoning Wang, Jianxiao Wang, Yang Jing, Qinyong He, Zixiang Chen, Liang Shi, Hao Lu, Cheng Sun, Fuzhen Bi, Shuangshuang Li, Qijun Ren, Chunming Yang, Yonghai Li, Xichang Bao","doi":"10.1002/smtd.70658","DOIUrl":"https://doi.org/10.1002/smtd.70658","url":null,"abstract":"Peripheral electronegativity of non-fullerene acceptors, despite its significant potential in modulating intermolecular interactions, remains largely unexplored. Herein, we develop three Y-series acceptors, namely Y-2FPh, Y-Ph, and Y-2OMePh, featuring a gradual transition from electron-deficient to electron-rich periphery. We reveal that the Y-2FPh exhibits accelerated crystallization, compact but relatively limited long-range π-π stacking. Conversely, the Y-2OMePh, functionalized with electron-rich dimethoxyphenyl groups, displays delayed crystallization, promoting long-range molecular ordering and superior charge transport. However, the improved crystallinity of Y-2OMePh exacerbates the aggregation-induced quenching effect, reducing luminescence property and slightly increasing non-radiative energy loss (∆Enr). As a result, devices employing Y-2FPh, Y-Ph, and Y-2OMePh as acceptors achieve photovoltaic efficiencies of 18.28%, 19.00%, and 18.84%, respectively. Notably, when incorporated as guest components, all three acceptors markedly enhance the performance of the D18:L8-BO reference, with the Y-2OMePh-based ternary device delivering an impressive efficiency of 20.01%. This work establishes peripheral electronegativity as a pivotal handle for finely tuning aggregation and exciton/charge properties toward high-performance solar cells.","PeriodicalId":229,"journal":{"name":"Small Methods","volume":" ","pages":"e70658"},"PeriodicalIF":9.1,"publicationDate":"2026-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147855593","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

Bionic Construction of Magnetic Recyclable Photothermal Materials Inspired by Velvet Ant Cuticle Structure for Efficient Solar Water Evaporation. 受天鹅绒蚂蚁角质层结构启发的磁性可回收光热材料的仿生结构，用于高效的太阳能水蒸发。

IF 9.1 2区材料科学

Small Methods Pub Date : 2026-05-08 DOI: 10.1002/smtd.70702

Shuang Liu, Na Yan, Zegang Shi, Tao Jia, Ning Jiang, Yufeng Bai, Di Yin, Tai Peng

{"title":"Bionic Construction of Magnetic Recyclable Photothermal Materials Inspired by Velvet Ant Cuticle Structure for Efficient Solar Water Evaporation.","authors":"Shuang Liu, Na Yan, Zegang Shi, Tao Jia, Ning Jiang, Yufeng Bai, Di Yin, Tai Peng","doi":"10.1002/smtd.70702","DOIUrl":"https://doi.org/10.1002/smtd.70702","url":null,"abstract":"The excessive consumption of fossil fuels, coupled with the severe shortage of freshwater resources, has precipitated grave energy and environmental challenges for society, the urgent need for sustainable solar-driven water evaporation technologies. This study draws inspiration from the microstructure of velvet ant cuticles, employing structural synergy to extend light propagation paths, thereby devising a novel strategy to enhance light absorption capabilities. Herein, a ZIF-67-derived composite supported on functionalized boron nitride nanosheets (f-BNNS) is fabricated to achieve efficient interfacial solar steam generation. Under light irradiation, f-BNNS may interact with ZIF-67 through their conjugated structures, which could facilitate the conversion of π-π* electronic transitions into thermal energy. In addition, cobalt nanoparticles derived from ZIF-67 are considered to act as localized photothermal centers. Their localized surface plasmon resonance (LSPR) effect and possible phonon-phonon coupling may contribute to interfacial heat localization, thereby promoting water evaporation. Benefiting from broadband light absorption, improved thermal management, and efficient photothermal conversion, the composite exhibits an evaporation rate of 1.38 kg·m-2·h-1 and an energy efficiency of 95.58% under simulated sunlight. This work presents a sustainable and magnetically recoverable photothermal system integrating MOF-derived photothermal components and thermally conductive scaffolds for high-efficiency solar-driven water evaporation.","PeriodicalId":229,"journal":{"name":"Small Methods","volume":" ","pages":"e70702"},"PeriodicalIF":9.1,"publicationDate":"2026-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147855530","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

Single-Molecule Detection and Characterization of Non-Canonical DNA Structures With α-Hemolysin-Based Protein Nanopore Technology. 基于α-溶血素蛋白纳米孔技术的非典型DNA结构单分子检测与表征

IF 9.1 2区材料科学

Small Methods Pub Date : 2026-05-07 DOI: 10.1002/smtd.70691

Tudor Luchian, Adina Cimpanu, Jonggwan Park, Loredana Mereuta, Yoonkyung Park

{"title":"Single-Molecule Detection and Characterization of Non-Canonical DNA Structures With α-Hemolysin-Based Protein Nanopore Technology.","authors":"Tudor Luchian, Adina Cimpanu, Jonggwan Park, Loredana Mereuta, Yoonkyung Park","doi":"10.1002/smtd.70691","DOIUrl":"https://doi.org/10.1002/smtd.70691","url":null,"abstract":"Nanopore-based approaches have emerged as versatile, cost-effective platforms for nanoscale biosensing and single-molecule analysis, delivering high sensitivity and throughput. These capabilities are underpinned by two intrinsic attributes: internal geometries commensurate with the physical dimensions of targeted molecules, and the ability to engineer the sensing interface with atomic precision-achieved through mutagenesis in biological nanopores or controlled functionalization in synthetic systems. Ultra-sensitive molecular detection is achieved through analysis of ionic current fluctuations across the nanopore, where the frequency, relative amplitude, and duration of current blockades report on the size and charge of the analyte, and the underlying Markovian dynamics stemming from intrinsic conformational changes or interactions with the nanopore. In this paper, we highlight recent developments of the α-hemolysin (α-HL) protein nanopore, to observe and perform real-time monitoring of the folding dynamics and conformational distribution of various DNA motifs, at the single-molecule level, in the presence of various environmental factors. The α-HL's potential to study the interactions of small molecule ligands and various nucleic acid structures, underscores impactful biologically relevance for future screening of drugs acting on such motifs, and underlines a transformative potential in precision medicine, bridging biological detection with potential applications in disease treatment and bioengineering.","PeriodicalId":229,"journal":{"name":"Small Methods","volume":" ","pages":"e70691"},"PeriodicalIF":9.1,"publicationDate":"2026-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147831724","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

Unlocking Limited Na-Ion Transport Channel in Na₂Fe₂(SO₄)₃ for Ultrafast Na-Ion Transport. 解锁Na2Fe2(SO4)3中有限的na离子输运通道以实现na离子的超快输运。

IF 9.1 2区材料科学

Small Methods Pub Date : 2026-05-07 DOI: 10.1002/smtd.70703

Yalan Gu, Ye Hong, Jiaojing Shao, Jiwei Hou, Zilong Tang, Qinfen Gu, Yuping Wu, Linfeng Hu

{"title":"Unlocking Limited Na-Ion Transport Channel in Na2Fe2(SO4)3 for Ultrafast Na-Ion Transport.","authors":"Yalan Gu, Ye Hong, Jiaojing Shao, Jiwei Hou, Zilong Tang, Qinfen Gu, Yuping Wu, Linfeng Hu","doi":"10.1002/smtd.70703","DOIUrl":"https://doi.org/10.1002/smtd.70703","url":null,"abstract":"Alluaudite-type Na2Fe2(SO4)3 has emerged as a promising cathode material for sodium-ion batteries (SIBs) owing to its high operating voltage (∼3.80 V vs. Na+/Na). Nevertheless, its practical rate performance is hindered by the sluggish Na+ transport. In this work, we realized the synergetic elongation of Na2─O/Na3─O bonds to widen the sodium ion transport channels by Ca, Mn, Cu co-doping. Specifically, Ca doping induced the elongation of the Na2─O5 and Na2─O5' bonds; Mn doping resulted in the extension of the Na2─O1 bond; and Cu doping led to the increase in the Na3─O4 and Na3─O4' bond lengths. Strikingly, the optimized Na2Fe1.9Ca0.03Mn0.035Cu0.035(SO4)3 exhibits ultrafast sodium ion diffusion coefficient in the range of 10-10 to 10-8 cm2·s-1, which is the highest one among the Na2Fe2(SO4)3 cathode up to date. Density functional theory (DFT) calculations confirm that co-doping can reduce the Na+ migration barrier. The sodium ion half-cell using this co-doped cathode delivers excellent rate capability (97, 80, and 69 mAh·g-1 at 0.1, 1.0, and 3.0 A·g-1, respectively) and excellent cycling stability of 5000 cycles. Our work provides new insights on the structural evolution of Na2─O/Na3─O bonds by multiple metallic cations substitution of Fe-site in Na2Fe2(SO4)3 to realize high sodium ion transport kinetics.","PeriodicalId":229,"journal":{"name":"Small Methods","volume":" ","pages":"e70703"},"PeriodicalIF":9.1,"publicationDate":"2026-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147831729","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

Rational Design and Development of Organic Afterglow Nanoparticles for Image-Guided Interventions. 用于图像引导干预的有机余辉纳米颗粒的合理设计与开发。

IF 9.1 2区材料科学

Small Methods Pub Date : 2026-05-07 DOI: 10.1002/smtd.70694

Asma Harun, Isabella Vasquez, Hannah Bowman, Robert Posey, Zhongkui Hong, Joshua Tropp, Indrajit Srivastava

{"title":"Rational Design and Development of Organic Afterglow Nanoparticles for Image-Guided Interventions.","authors":"Asma Harun, Isabella Vasquez, Hannah Bowman, Robert Posey, Zhongkui Hong, Joshua Tropp, Indrajit Srivastava","doi":"10.1002/smtd.70694","DOIUrl":"https://doi.org/10.1002/smtd.70694","url":null,"abstract":"Conventional fluorescence imaging is constrained by tissue autofluorescence, limited penetration depth, photobleaching, and the need for continuous excitation. Afterglow imaging addresses these limitations by producing persistent luminescence for extended periods following excitation, enabling background-free, high-sensitivity imaging with elevated signal-to-background ratios. This review summarizes the rational design, synthesis, processing, and standardized characterization of organic afterglow nanoparticles (ANPs) for biomedical imaging and therapy. Key afterglow mechanisms, including chemically initiated electron exchange luminescence (CIEEL), reactive oxygen species-mediated energy transfer, and trap-assisted recombination, are examined in relation to how molecular structure, polymer composition, and nanoparticle formulation influence emission wavelength, intensity, persistence, and degradability. Recent developments in small-molecule, conjugated-polymer, and polymerization-based afterglow systems are discussed, along with scalable fabrication methods such as nanoprecipitation and self-assembly. Standardized physicochemical and optical characterization metrics essential for reproducibility and clinical translation are outlined. Biomedical applications of ANPs in image-guided surgery, lymph node mapping, cardiovascular disease detection, photothermal and photodynamic therapy, and ultrasound- and X-ray-activated afterglow are highlighted.","PeriodicalId":229,"journal":{"name":"Small Methods","volume":" ","pages":"e70694"},"PeriodicalIF":9.1,"publicationDate":"2026-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147831705","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

High-Resolution Mapping of Discharge Product in Li─O₂ Batteries. 锂氧电池放电产物的高分辨率映射。

IF 9.1 2区材料科学

Small Methods Pub Date : 2026-05-07 DOI: 10.1002/smtd.70699

Laurence F Brazel, Margherita Martini, Eric Maire, Arnaud Demortière, Michael De Volder, Clare P Grey, Israel Temprano

{"title":"High-Resolution Mapping of Discharge Product in Li─O2 Batteries.","authors":"Laurence F Brazel, Margherita Martini, Eric Maire, Arnaud Demortière, Michael De Volder, Clare P Grey, Israel Temprano","doi":"10.1002/smtd.70699","DOIUrl":"https://doi.org/10.1002/smtd.70699","url":null,"abstract":"Lithium-oxygen (Li─O2) batteries have the highest theoretical specific energy of any chemical battery (∼3500 Wh kg-1). However, their practical capacity is usually lower than theoretically expected, particularly at higher rates of discharge. Air electrode surface passivation and slow O2 mass transport through the porous electrode structure are the primary limitations on Li─O2 discharge capacity. To determine which of these factors is most significant, it is necessary to spatially determine the relative utilisation of different portions of the electrode. Here, we demonstrate how cross-sectional scanning electron microscopy coupled with energy-dispersive X-ray spectroscopy (SEM-EDS) can be used to semi-quantitatively map the discharge product distribution within Li─O2 air electrodes. The distribution shows increased discharge product accumulation at the O2-side of the electrode, confirming that pore blockage and oxygen starvation are key factors leading to under-utilisation of the air electrode in Li─O2 cells. Simulated Li─O2 battery results align with the characterised discharge product distribution, lending validation to the model. Lab-based X-ray nano-computed tomography corroborates the SEM-EDS data to ensure that sample preparation had minimal effect on the measured distribution. Collectively, these techniques can be used to determine the cause of performance changes due to different discharge conditions, alternative electrolyte compositions, or electrode structure.","PeriodicalId":229,"journal":{"name":"Small Methods","volume":" ","pages":"e70699"},"PeriodicalIF":9.1,"publicationDate":"2026-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147831574","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

Mapping Nanoscale Order-Disorder Transitions to Optimal Topochemical Polymerization Across Alkyl Diacetylene Monolayers. 映射纳米尺度有序-无序过渡到最佳拓扑化学聚合横跨烷基二乙炔单层。

IF 9.1 2区材料科学

Small Methods Pub Date : 2026-05-07 DOI: 10.1002/smtd.70698

Joseph A Garfield, Soumya Paul, Shelley A Claridge

{"title":"Mapping Nanoscale Order-Disorder Transitions to Optimal Topochemical Polymerization Across Alkyl Diacetylene Monolayers.","authors":"Joseph A Garfield, Soumya Paul, Shelley A Claridge","doi":"10.1002/smtd.70698","DOIUrl":"https://doi.org/10.1002/smtd.70698","url":null,"abstract":"On-surface reactions within self-assembled molecular networks offer a powerful strategy for nanoscale interface design, but must balance molecular layer stability with the local dynamics required for bond formation. Here, we develop a framework for identifying optimal reaction conditions in the topochemical polymerization of diacetylene monolayers on 2D materials. By systematically varying H-bonding headgroup chemistry (COOH, OH, and NH2), we examine how bulk and surface-confined structural transitions can be used to establish a window of optimal on-surface polymerization efficiency. Combining temperature-dependent polymerization measurements with atomic force microscopy, differential scanning calorimetry, and molecular dynamics simulations, we relate bulk melting measurements (Tm(TCD-COOH) = 56°C, Tm(TCD-OH) = 51°C, Tm(TCD-NH2) = 26°C), to observed surface-confined structural transitions. Across all monomers, polymerization efficiency increases above room temperature with a maximum near the onset of surface disorder or near solid-solid transitions that alter distances between bond-forming carbons (e.g., TCD-OH herringbone phases): Tmax(TCD-COOH) = 65°C, Tmax(TCD-OH) = 45°C, and Tma x(TCD-NH2) = 45°C. These results demonstrate the relationship between optimal on-surface reactivity and pre-melting increases in alkyl chain mobility, establishing a broader strategy for maximizing on-surface topochemical polymerization efficiency.","PeriodicalId":229,"journal":{"name":"Small Methods","volume":" ","pages":"e70698"},"PeriodicalIF":9.1,"publicationDate":"2026-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147831590","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

NIR-Responsive Micropumps Enhance Antibiotic Treatment via Biofilm Destruction. nir响应微泵通过生物膜破坏增强抗生素治疗。

IF 9.1 2区材料科学

Small Methods Pub Date : 2026-05-07 DOI: 10.1002/smtd.202502339

Kecheng Quan, Yunan Lu, Peng Liu, Jiangqi Xu, Zexin Zhang, Reza A Ghiladi

{"title":"NIR-Responsive Micropumps Enhance Antibiotic Treatment via Biofilm Destruction.","authors":"Kecheng Quan, Yunan Lu, Peng Liu, Jiangqi Xu, Zexin Zhang, Reza A Ghiladi","doi":"10.1002/smtd.202502339","DOIUrl":"https://doi.org/10.1002/smtd.202502339","url":null,"abstract":"A novel strategy for eradicating biofilms by enhancing antibiotic penetration is presented through the development of a photo-responsive, micropump-engineered surface. This surface features black titanium oxide (B-TiO2) colloidal particles immobilized on a titanium substrate, a material commonly used in biomedical implants. When exposed to near-infrared (NIR) light, the engineered surface induces localized thermal convection flows within the biofilm and simultaneously generates reactive oxygen species (ROS). These physical and chemical effects act synergistically to disrupt the biofilm architecture. Remarkably, only 20 min of NIR irradiation leads to a significant reduction in the biomass of Staphylococcus aureus biofilms on the micropump surface. This effect is mediated by two complementary mechanisms: thermal convection-driven water flow and ROS-induced degradation of the extracellular polymeric substance (EPS), which forms the structural scaffold of the biofilm. As a result, the antibacterial activity of gentamicin is enhanced by approximately five-fold in vitro and ten-fold in vivo in a rat subcutaneous infection model. Furthermore, the B-TiO2 micropump exhibits excellent biocompatibility, showing no adverse effects in either in vitro or in vivo assessments. This innovative photo-responsive approach provides a promising solution for addressing biofilm-related infections on medical device surfaces by effectively disrupting biofilms and markedly improving antibiotic efficacy.","PeriodicalId":229,"journal":{"name":"Small Methods","volume":" ","pages":"e02339"},"PeriodicalIF":9.1,"publicationDate":"2026-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147831693","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

Synergistic Interfacial Engineering With Butylamine Hydrochloride (BACl)-Doped PCBM Enables Four-Orders-of-Magnitude Responsivity Enhancement in Planar CsPbI₃ Photodetectors. 与盐酸丁胺（BACl）掺杂的PCBM协同界面工程使平面CsPbI3光电探测器的响应率提高了四个数量级。

IF 9.1 2区材料科学

Small Methods Pub Date : 2026-05-07 DOI: 10.1002/smtd.70706

Yan Tian, Jinpeng Yang, Yanle Li, Bo Li, Meiyue Liu, Sha Liu

{"title":"Synergistic Interfacial Engineering With Butylamine Hydrochloride (BACl)-Doped PCBM Enables Four-Orders-of-Magnitude Responsivity Enhancement in Planar CsPbI3 Photodetectors.","authors":"Yan Tian, Jinpeng Yang, Yanle Li, Bo Li, Meiyue Liu, Sha Liu","doi":"10.1002/smtd.70706","DOIUrl":"https://doi.org/10.1002/smtd.70706","url":null,"abstract":"Planar perovskite photodetectors are limited by severe interfacial recombination and inefficient charge extraction. Here, we enhance the photoresponsivity of CsPbI3 photodetectors by four orders of magnitude via incorporating butylamine hydrochloride (BACl) into the PCBM electron transport layer. BACl improves film morphology and conductivity while passivating perovskite surface defects, suppressing non-radiative recombination and optimizing energy alignment. Transient photovoltage and photocurrent measurements confirm the reduced recombination and accelerated charge extraction. The enhancement arises from suppressed recombination and a photogating effect, where trapped holes at the interface create an internal gate that boosts conductivity. Consequently, the champion device achieves a high responsivity of 3.4 A W- 1, a specific detectivity of 4.85 × 1012 Jones, and a fast response time of 40 µs. Furthermore, the modified device exhibits outstanding operational and storage stability: under continuous 660 nm illumination for 6 h, it shows only a 15.9% fluctuation in the light on-off ratio, vastly outperforming the pristine device (99.5%). After 500 h of storage in a glove box, it retains 48% of its initial photoresponsivity, while the pristine device loses all photosensitivity. This work highlights multifunctional ETL doping as a simple route to high-performance perovskite photodetectors.","PeriodicalId":229,"journal":{"name":"Small Methods","volume":" ","pages":"e70706"},"PeriodicalIF":9.1,"publicationDate":"2026-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147831670","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