IF 13.3 2区材料科学

Small Pub Date : 2024-11-20 DOI: 10.1002/smll.202406089

Behrooz Khatir, Angela Lin, Thu V. Vuong, Peter Serles, Ali Shayesteh, Nathan Sung Yuan Hsu, David Sinton, Helen Tran, Emma R. Master, Tobin Filleter, Kevin Golovin

{"title":"Molecular Structure of Omniphobic, Surface-Grafted Polydimethylsiloxane Chains","authors":"Behrooz Khatir, Angela Lin, Thu V. Vuong, Peter Serles, Ali Shayesteh, Nathan Sung Yuan Hsu, David Sinton, Helen Tran, Emma R. Master, Tobin Filleter, Kevin Golovin","doi":"10.1002/smll.202406089","DOIUrl":"https://doi.org/10.1002/smll.202406089","url":null,"abstract":"The unique surface properties of grafted polydimethylsiloxane (PDMS) chains, particularly their omniphobicity and low friction, are influenced by molecular structure and tethering density. Despite molecularly smoothness and homogeneity, these surfaces exhibit significant variability in wettability and contact angle hysteresis (CAH). This work uncovers the molecular structure of grafted PDMS chains. Grafted PDMS chains synthesized using a difunctional chlorosilane initiator, which exhibits CAH <2° on silicon wafers, adopt a brush-to-mushroom conformation with a molecular weight ≈7,800 g mol−1, a grafting density of 0.22 ± 0.4 chains nm−2, and a thickness of ≈3 nm. Each PDMS chain terminates with a silanol group, and ≈96% of substrate silanols remain unreacted. The presence of these terminal silanols is confirmed with time-of-flight secondary ion mass spectroscopy, as is their removal when exchanged for trimethylsilyl groups, both on the substrate and terminating the PDMS chains. Quartz crystal microbalance with dissipation measurements show that this “capping” procedure exchanges ≈1.5 silanols nm−2; capping occurs at the substrate and PDMS chain end. The findings suggest that grafted, capped PDMS chains of this molecular weight are able to achieve excellent omniphobic properties even when the majority of surface silanols remain unreacted, which may aid in the design of future omniphobic materials.","PeriodicalId":228,"journal":{"name":"Small","volume":"1 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142678833","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-Atom Pt Anchored Polyoxometalate as Electron-Proton Shuttle for Efficient Photoreduction of CO2 to CH4 Catalyzed by NiCo Layered Doubled Hydroxide 单原子铂锚定聚氧化金属酸盐作为电子质子穿梭器，在镍钴层状双氢氧化物催化下将 CO2 高效光还原为 CH4

IF 13.3 2区材料科学

Small Pub Date : 2024-11-20 DOI: 10.1002/smll.202410343

Ailin Cai, Guicong Hu, Wei Chen, Sai An, Bo Qi, Yu-Fei Song

{"title":"Single-Atom Pt Anchored Polyoxometalate as Electron-Proton Shuttle for Efficient Photoreduction of CO2 to CH4 Catalyzed by NiCo Layered Doubled Hydroxide","authors":"Ailin Cai, Guicong Hu, Wei Chen, Sai An, Bo Qi, Yu-Fei Song","doi":"10.1002/smll.202410343","DOIUrl":"https://doi.org/10.1002/smll.202410343","url":null,"abstract":"The crucial role of active hydrogen (H*) in photocatalytic CO2 methanation has long been overlooked, although recently, accelerating proton-coupled electron transfer (PCET) processes to enhance CH4 productivity and selectivity has garnered significant attention. Herein, a single-atom Pt-anchored H3PMo12O40 (Pt1-PMo12) is applied as an efficient proton–electron shuttle to facilitate the photocatalytic performance of NiCo layered double hydroxide (NiCo-LDH). The resultant Pt1-PMo12@NiCo-LDH exhibited superior CH4 productivity (723 µmol g−1 h−1) with CH4 selectivity of 82.3%, showcasing a 24.9 times productivity enhancement over NiCo-LDH (29 µmol g−1 h−1). Systematic investigations revealed that abundant H* is generated by the dissociation of H2O on Pt1 sites and stored within Pt1-PMo12. Subsequently, the multiple H* rapidly migrated from Pt1-PMo12 to the catalytic sites on NiCo-LDH by the engineered strong Mo─O─Ni/Co bonds, thereby significantly expediting the PCET process. The in situ DRIFTS and theoretical calculations elucidated that the Pt1-PMo12 decreased the energy barrier for *CO protonation to *CHO (0.38–0.18 eV) and optimized the rate-determining step of *CH3 to *CH4 (0.64 eV), thus promoting highly active and selective CH4 generation. This work provided novel insights into achieving efficient photocatalytic CO2 methanation by modulating the fast generation and transport of active H*.","PeriodicalId":228,"journal":{"name":"Small","volume":"81 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142678915","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

CO2-Mediated Hydrogen Energy Release-Storage Enabled by High-Dispersion Gold-Palladium Alloy Nanodots 高分散金钯合金纳米点实现二氧化碳介导的氢能释放与存储

IF 13.3 2区材料科学

Small Pub Date : 2024-11-20 DOI: 10.1002/smll.202407578

Rui Luo, Panzhe Qiao, Mengqi Zeng, Xinyue Deng, Hui Wang, Weiju Hao, Jinchen Fan, Qingyuan Bi, Guisheng Li, Yong Cao

{"title":"CO2-Mediated Hydrogen Energy Release-Storage Enabled by High-Dispersion Gold-Palladium Alloy Nanodots","authors":"Rui Luo, Panzhe Qiao, Mengqi Zeng, Xinyue Deng, Hui Wang, Weiju Hao, Jinchen Fan, Qingyuan Bi, Guisheng Li, Yong Cao","doi":"10.1002/smll.202407578","DOIUrl":"https://doi.org/10.1002/smll.202407578","url":null,"abstract":"Developing and fabricating a heterogeneous catalyst for efficient formic acid (FA) dehydrogenation coupled with CO2 hydrogenation back to FA is a promising approach to constructing a complete CO2-mediated hydrogen release-storage system, which remains challenging. Herein, a facile two-step strategy involving high-temperature pyrolysis and wet chemical reduction processes can synthesize efficient pyridinic-nitrogen-modified carbon-loaded gold-palladium alloy nanodots (AuPd alloy NDs). These NDs exhibit a prominent electron synergistic effect between Au and Pd components and tunable alloy−support interactions. The pyridinic-N dosage in carbon substrate improves the surface electron density of the alloy catalyst, thus regulating the chemical adsorption of FA molecules. Specifically, the engineered Au3Pd7/CN0.25 demonstrates an outstanding room-temperature FA dehydrogenation efficiency, achieving ≈100% conversion and an initial turnover frequency (TOF) of up to 9049 h−1. The versatile AuPd alloy NDs also show the ability to convert CO2, one of the products of FA dehydrogenation, into FA (formate) with a 90.8% yield under mild conditions. Moreover, in-depth insights into the unique alloyed microstructure, structure-activity relationship, key intermediates, and the alloy-driven five-step reaction mechanism involving the rate-determining step of C─H bond cleavage from critical *HCOO species via D-labeled isotope, in situ infrared spectroscopy, and theoretical calculations are investigated.","PeriodicalId":228,"journal":{"name":"Small","volume":"33 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142678835","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

Novel Single Perovskite Material for Visible-Light Photocatalytic CO2 Reduction via Joint Experimental and DFT Study 通过实验和 DFT 联合研究发现用于可见光光催化二氧化碳还原的新型单一过氧化物材料

IF 13.3 2区材料科学

Small Pub Date : 2024-11-20 DOI: 10.1002/smll.202407206

Ulkar Samadova, Amil Aligayev, Pir Muhammad Ismail, Min Liu, Ulviya Safarzade, Arif Hashimov, Ilhame Zakiyeva, Syeda Sughra Rabbani, Habib Khan, Qing Huang, Xiaoqiang Wu, Li Zhong, Fazal Raziq, Jiabao Yi, Pengfei Xia, Liang Qiao

{"title":"Novel Single Perovskite Material for Visible-Light Photocatalytic CO2 Reduction via Joint Experimental and DFT Study","authors":"Ulkar Samadova, Amil Aligayev, Pir Muhammad Ismail, Min Liu, Ulviya Safarzade, Arif Hashimov, Ilhame Zakiyeva, Syeda Sughra Rabbani, Habib Khan, Qing Huang, Xiaoqiang Wu, Li Zhong, Fazal Raziq, Jiabao Yi, Pengfei Xia, Liang Qiao","doi":"10.1002/smll.202407206","DOIUrl":"https://doi.org/10.1002/smll.202407206","url":null,"abstract":"Developing advanced and economically viable technologies for the capture and utilization of carbon dioxide (CO2) is crucial for sustainable energy production from fossil fuels. Converting CO2 into valuable chemicals and fuels is a promising approach to mitigate atmospheric CO2 levels. Among various methods, photocatalytic reduction stands out for its potential to reduce emissions and produce useful products. Here, novel perovskite ZnMoFeO3 (ZMFO) nanosheets are presented as promising semiconductor photocatalysts for CO2 reduction. Experimental results show that ZMFO has a narrow bandgap, exceptional visible light response, large specific surface area, high crystallinity, and various surface-active sites, leading to an impressive photocatalytic CO2 reduction activity of 24.87 µmolg−1h−1 and strong stability. Theoretical calculations reveal that CO2 conversion into CO and CH4 on the ZMFO surface follows formaldehyde and carbine pathways. This study provides significant insights into designing innovative perovskite oxide-based photocatalysts for economical and efficient CO2 reduction systems.","PeriodicalId":228,"journal":{"name":"Small","volume":"57 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142678836","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

Direct Ink Writing of Rigid Microparticles 刚性微颗粒的直接墨水写入

IF 13.3 2区材料科学

Small Pub Date : 2024-11-20 DOI: 10.1002/smll.202405675

Pauline Pradal, Jong Bin Kim, Seong Kyeong Nam, Shin-Hyun Kim, Esther Amstad

{"title":"Direct Ink Writing of Rigid Microparticles","authors":"Pauline Pradal, Jong Bin Kim, Seong Kyeong Nam, Shin-Hyun Kim, Esther Amstad","doi":"10.1002/smll.202405675","DOIUrl":"https://doi.org/10.1002/smll.202405675","url":null,"abstract":"Direct ink writing (DIW) enables 3D printing of macroscopic objects with well-defined structures and compositions that controllably change over length scales of order 100 µm. Unfortunately, only a limited number of materials can be processed through DIW because it imparts stringent rheological requirements on inks. This limitation can be overcome for soft materials, if they are formulated as microparticles that, if jammed, fulfill the rheological requirements to be printed. By contrast, densely packed rigid microparticles with stiffnesses exceeding 2 MPa do not exhibit appropriate rheological properties that enable DIW. Here, an ink composed of up to 60 vol% rigid microparticles with core stiffnesses up to 50 MPa is introduced. To achieve this goal, rigid microparticles possessing soft hydrogel shells are produced. The 3D printed fragile granular structure is transformed into a load-bearing granular material through the formation of a 2nd network within the soft shells and in the interstitial spaces. The potential of these particles is demonstrated to be printed into intricate 3D structures, such as a trophy cup, or cast into flexible macroscopic photonic films.","PeriodicalId":228,"journal":{"name":"Small","volume":"46 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142678964","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

Atomically Precise Metal–Metal Oxide Interface in Polyoxometalate-Noble Metal Hybrid Clusters 聚氧化金属酸盐-贵金属杂化团簇中的原子精度金属-金属氧化物界面

IF 13.3 2区材料科学

Small Pub Date : 2024-11-20 DOI: 10.1002/smll.202408884

Hai-Ning Wang, Xing Meng, Yitao Cao, Shun-Li Li, Ya-Qian Lan

{"title":"Atomically Precise Metal–Metal Oxide Interface in Polyoxometalate-Noble Metal Hybrid Clusters","authors":"Hai-Ning Wang, Xing Meng, Yitao Cao, Shun-Li Li, Ya-Qian Lan","doi":"10.1002/smll.202408884","DOIUrl":"https://doi.org/10.1002/smll.202408884","url":null,"abstract":"Metal-metal oxide hybrid materials, typically composed of metal nanoparticles anchored on metal oxides matrix, are devoted enormous attentions as famous heterogeneous catalysts. The interactions between noble metals and metal oxides as well as their interfaces have been proven to be the origin of their excellent catalytic performance. Deep understandings on the interactions between noble metals and metal oxides at atomic precision, thus to precisely assess their contributions to catalysis, can serve as basic principles for catalyst design. In recent years, polyoxometalates (POMs), which in principle can be regarded as atomically precise metal oxide clusters, have been shown to have strong affinity to noble metals, thus forming diverse kinds of POM-noble metal hybrid clusters. Their well-resolved atomically precise structures and hybrid nature promise them as ideal platforms to understand the interfaces and interactions between noble metals and metal oxides. In this review, metal-metal oxide interface is classified into different categories based on the different configurations of hybrid clusters, and aims to understand the interface structures and electronic correlations between POMs and noble metals at the atomic precision. Based on these basic understandings, the study provides the perspectives on the challenges and research efforts to be paid in the future.","PeriodicalId":228,"journal":{"name":"Small","volume":"178 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142673496","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 Near-Infrared II Photo-Triggered Multifunctional Plasmonic Hyperthermia Immunomodulator for SERS-Guided Combination Cancer Immunotherapy 用于 SERS 引导的联合癌症免疫疗法的近红外 II 光触发多功能质子高热免疫调节剂

IF 13.3 2区材料科学

Small Pub Date : 2024-11-20 DOI: 10.1002/smll.202409154

Linhu Li, Renting Jiang, Jin-Feng Yu, Ming Li

{"title":"A Near-Infrared II Photo-Triggered Multifunctional Plasmonic Hyperthermia Immunomodulator for SERS-Guided Combination Cancer Immunotherapy","authors":"Linhu Li, Renting Jiang, Jin-Feng Yu, Ming Li","doi":"10.1002/smll.202409154","DOIUrl":"https://doi.org/10.1002/smll.202409154","url":null,"abstract":"Immunotherapy represents a promising therapeutic strategy for cancer treatment, but its clinical applications are currently hindered by insufficient therapeutic potency, nonspecific delivery, and adverse side effects. Herein, a novel near-infrared II (NIR-II) photo-triggered plasmonic hyperthermia immunomodulator (RP@IR-pcNS@HA nanoparticles (NPs)) for anticancer treatment of both primary and distant cancers is reported. This immunomodulator comprises an IR-1061 dye-encoded NIR-II porous cubic AuAg nanoshell (pcNS) loaded with a Toll-like receptor 7 agonist – R837 in phase change materials (PCMs), further modified with hyaluronic acid (HA). In response to NIR-II photoirradiation, the RP@IR-pcNS@HA NPs controllably deliver and release R837 to tumor sites, subsequently perform plasmonic hyperthermia therapy for direct ablation of primary tumors, and elicit robust anticancer immune responses. It is demonstrated that upon NIR-II irradiation, such a plasmonic hyperthermia immunomodulator combined with anti-programmed death 1 antibody (αPD-1) completely eradicates both primary and distant cancers. In addition, this combination treatment successfully elicits robust immune memory responses for effective suppression of recurrence and distant metastasis of cancer. With the excellent NIR-II surface-enhanced Raman scattering (SERS) detection ability, the RP@IR-pcNS@HA NPs combined with αPD-1 represent an efficient way to develop high-performance theranostic agents for SERS-guided combination cancer photoimmunotherapy.","PeriodicalId":228,"journal":{"name":"Small","volume":"7 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142673499","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

Lead-Free All Inorganic Rubidium Copper Halide Rb2CuX3 (X = Cl, Br) for UVC Photodetector with Fast Response 用于紫外线光电探测器的无铅全无机卤化铷铜 Rb2CuX3（X = Cl、Br），响应速度快

IF 13.3 2区材料科学

Small Pub Date : 2024-11-20 DOI: 10.1002/smll.202406048

Ankit Kumar, Praveen Kumar, Ankush Saini, Monojit Bag, Prasenjit Kar

{"title":"Lead-Free All Inorganic Rubidium Copper Halide Rb2CuX3 (X = Cl, Br) for UVC Photodetector with Fast Response","authors":"Ankit Kumar, Praveen Kumar, Ankush Saini, Monojit Bag, Prasenjit Kar","doi":"10.1002/smll.202406048","DOIUrl":"https://doi.org/10.1002/smll.202406048","url":null,"abstract":"Recently, lead halide perovskites have shown great potential in the photodetection field. Unfortunately, the existence of toxic lead elements restricts their practical application. Herein, high-quality 1D lead-free crystals Rb2CuX3 (X = Cl, Br) are successfully synthesized in an acidic medium. Rb2CuCl3 and Rb2CuBr3 display violet photoluminescence emission peaks at 401 and 388 nm with a high exciton lifetime of 12.78 and 59.67 µs, respectively, which is due to self-trapped excitons (STE). Furthermore, a photodetector is fabricated to detect harmful UVC radiation with Rb2CuBr3 as a light absorber. The proposed photodetector has a responsivity of 0.92 mA W−1 and a specific detectivity of 1.57 × 109 Jones with a fast response speed of 2.67/2.70 µs for rise/fall time, respectively. In addition, both the samples show good stability against open air, and continuous ultraviolet light (254 nm), as well as good thermal stability which is necessary for device fabrication. Thus, the present study suggests that stable, non-toxic, and environment-friendly Rb2CuX3 (X = Cl, Br) can be a promising candidate for future UVC optoelectronic devices.","PeriodicalId":228,"journal":{"name":"Small","volume":"14 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142673429","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

How Much Force is Needed to Kill a Single Bacterium? 杀死一个细菌需要多大的力量？

IF 13.3 2区材料科学

Small Pub Date : 2024-11-20 DOI: 10.1002/smll.202407990

Virginia Vadillo-Rodríguez, Patricia Pedraz, Cristina Flors

{"title":"How Much Force is Needed to Kill a Single Bacterium?","authors":"Virginia Vadillo-Rodríguez, Patricia Pedraz, Cristina Flors","doi":"10.1002/smll.202407990","DOIUrl":"https://doi.org/10.1002/smll.202407990","url":null,"abstract":"The interaction between bacteria and nanomaterials, particularly from a physical or mechanical perspective, has emerged as a topic of significant interest in both science and medicine. Mechanobactericidal nanomaterials, which exert antimicrobial effects through purely physical mechanisms, hold promise as alternative strategies to combat bacterial resistance to traditional antibiotics. High-aspect-ratio nanoparticles and surface topographies are being engineered to enhance their mechanobactericidal properties. However, progress in this field is hindered by an incomplete understanding of how these materials induce mechanical cell death in bacteria. This review examines the role of atomic force microscopy (AFM) nanoindentation in quantifying forces required to rupture the bacterial cell wall. The reported values range from nN to a few tens of nN, depending on the type of bacterium and the experimental conditions used. The potential effect of AFM tip properties, loading speed, bacterial immobilization strategy, or environmental conditions on the measured rupture values are discussed. This perspective also highlights the complexities of modeling bacterial cell rupture and the importance of pressure as a parameter for standardizing results across experiments. Furthermore, the implications of these quantitative insights to understand the mechanisms of action of mechanobactericidal nanomaterials are discussed.","PeriodicalId":228,"journal":{"name":"Small","volume":"18 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142678907","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

Multifunctional Regulation of Chemical Bath Deposition Based SnO2 for Efficient Perovskite Solar Cells 基于化学浴沉积的二氧化锡的多功能调节，以实现高效的 Perovskite 太阳能电池

IF 13.3 2区材料科学

Small Pub Date : 2024-11-20 DOI: 10.1002/smll.202406696

Xiuhong Geng, Guohui Luo, Yi Zhang, Penghui Ren, Linfeng Zhang, Xiongxiong Ling, Junchang Zeng, Xiaoping Wu, Lingbo Xu, Ping Lin, Xuegong Yu, Peng Wang, Can Cui

{"title":"Multifunctional Regulation of Chemical Bath Deposition Based SnO2 for Efficient Perovskite Solar Cells","authors":"Xiuhong Geng, Guohui Luo, Yi Zhang, Penghui Ren, Linfeng Zhang, Xiongxiong Ling, Junchang Zeng, Xiaoping Wu, Lingbo Xu, Ping Lin, Xuegong Yu, Peng Wang, Can Cui","doi":"10.1002/smll.202406696","DOIUrl":"https://doi.org/10.1002/smll.202406696","url":null,"abstract":"SnO2 prepared by chemical bath deposition (CBD) is among the most promising electron transport layers for enabling high efficiency, large area perovskite solar cells (PSCs). However, the uneven surface coverage of SnO2 and the presence of defects in the film and/or at the SnO2/perovskite interface significantly affect the device performance. Herein, a multifunctional molecule of phosphorylcholine chloride (CP) is introduced to modulate the CBD growth of SnO2 and suppress the generation of defects. The agglomeration of SnO2 nanoparticles is hindered due to the electrostatic repulsion effect, leading to the formation of dense and conformal films with improved optical transmittance and electrical conductivity. Moreover, the defects both in SnO2 and at the interface of SnO2/perovskite are successfully passivated and the energy band structure is well regulated, contributing to the suppression of nonradiative recombination and the improvement of electron transport. As a result, a remarkably high power conversion efficiency (PCE) of 24.04% is attained for PSCs processed in air ambient. The unencapsulated devices exhibit improved long-term stability, maintaining over 80% of their initial PCE after storing in air ambient for 1500 h or under one-sun illumination for 600 h.","PeriodicalId":228,"journal":{"name":"Small","volume":"57 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142678913","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

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