Materials Futures最新文献_第6页

Polyamorphism mediated by nanoscale incipient concentration wave uncovering hidden amorphous intermediate state with ultrahigh modulus in nanostructured metallic glass 纳米初始浓度波介导的多晶现象揭示了纳米结构金属玻璃中隐藏的超高模量非晶中间态

Materials Futures Pub Date : 2023-02-21 DOI: 10.1088/2752-5724/acbdb4

Q. Luo, W. Cui, Huaping Zhang, Liangliang Li, Liliang Shao, Mingjuan Cai, Zhengguo Zhang, L. Xue, Jun Shen, Yu Gong, Xiaodong Li, Maozi Li, B. Shen

{"title":"Polyamorphism mediated by nanoscale incipient concentration wave uncovering hidden amorphous intermediate state with ultrahigh modulus in nanostructured metallic glass","authors":"Q. Luo, W. Cui, Huaping Zhang, Liangliang Li, Liliang Shao, Mingjuan Cai, Zhengguo Zhang, L. Xue, Jun Shen, Yu Gong, Xiaodong Li, Maozi Li, B. Shen","doi":"10.1088/2752-5724/acbdb4","DOIUrl":"https://doi.org/10.1088/2752-5724/acbdb4","url":null,"abstract":"Comprehending the pressure-/temperature-induced structural transition in glasses, as one of the most fascinating issues in material science, is far from being well understood. Here, we report novel polyamorphic transitions in a Cu-based metallic glass (MG) with apparent nanoscale structural heterogeneity relating to proper Y addition. The low-density MG compresses continuously with increasing pressure, and then a compression plateau appears after ∼8.1 GPa, evolving into an intermediate state with an ultrahigh bulk modulus of ∼467 GPa. It then transforms to a high-density MG with significantly decreased structural heterogeneity above ∼14.1 GPa. Three-dimensional atom probe tomography reveals concentration waves of Cu/Zr elements with an average wavelength of ∼5–6 nm, which promote the formation of interconnected ringlike networks composed of Cu-rich and Zr-rich dual-glass domains at nanometer scale. Our experimental and simulation results indicate that steplike polyamorphism may stem from synergic effects of the abnormal compression of the Zr–Zr bond length at the atomic scale and the interplay between the applied pressure and incipient concentration waves (Cu and Zr) at several nanometer scales. The present work provides new insights into polyamorphism in glasses and contributes to the development of high-performance amorphous materials by high-pressure nanostructure engineering.","PeriodicalId":221966,"journal":{"name":"Materials Futures","volume":"82 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133336110","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Atomically constructing a van der Waals heterostructure of CrTe2/Bi2Te3 by molecular beam epitaxy 用分子束外延原子构建CrTe2/Bi2Te3的范德华异质结构

Materials Futures Pub Date : 2023-02-20 DOI: 10.1088/2752-5724/acbd64

Jin-Hua Nie, Rui Li, Mao-Peng Miao, Ying-Shuang Fu, Wenhao Zhang

{"title":"Atomically constructing a van der Waals heterostructure of CrTe2/Bi2Te3 by molecular beam epitaxy","authors":"Jin-Hua Nie, Rui Li, Mao-Peng Miao, Ying-Shuang Fu, Wenhao Zhang","doi":"10.1088/2752-5724/acbd64","DOIUrl":"https://doi.org/10.1088/2752-5724/acbd64","url":null,"abstract":"A 2D heterostructure with proximity coupling of magnetism and topology can provide enthralling prospects for hosting new quantum states and exotic properties that are relevant to next-generation spintronic devices. Here, we synthesize a delicate van der Waals (vdW) heterostructure of CrTe2/Bi2Te3 at the atomic scale via molecular beam epitaxy. Low-temperature scanning tunneling microscopy/spectroscopy measurements are utilized to characterize the geometric and electronic properties of the CrTe2/Bi2Te3 heterostructure with a compressed vdW gap. Detailed structural analysis reveals complex interfacial structures with diversiform step heights and intriguing moiré patterns. The formation of the interface is ascribed to the embedded characteristics of CrTe2 and Bi2Te3 by sharing Te atomic layer upon interfacing, showing intercoupled features of electronic structure for CrTe2 and Bi2Te3. Our study demonstrates a possible approach to construct artificial heterostructures with different types of ordered states, which may be of use for achieving tunable interfacial Dzyaloshinsky–Moriya interactions and tailoring the functional building blocks in low dimensions.","PeriodicalId":221966,"journal":{"name":"Materials Futures","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117030136","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Carbon-based perovskite solar cells with electron and hole-transporting/-blocking layers 具有电子和空穴传输/阻挡层的碳基钙钛矿太阳能电池

Materials Futures Pub Date : 2023-02-14 DOI: 10.1088/2752-5724/acbbc2

Wenjin Yu, Yu Zou, Shining Zhang, Zishi Liu, Cuncun Wu, Bo Qu, Zhijian Chen, Lixin Xiao

{"title":"Carbon-based perovskite solar cells with electron and hole-transporting/-blocking layers","authors":"Wenjin Yu, Yu Zou, Shining Zhang, Zishi Liu, Cuncun Wu, Bo Qu, Zhijian Chen, Lixin Xiao","doi":"10.1088/2752-5724/acbbc2","DOIUrl":"https://doi.org/10.1088/2752-5724/acbbc2","url":null,"abstract":"Towards commercialization of perovskite solar cells (PSCs), further reducing the cost and increasing the stability of PSCs have been the most important tasks of researchers, as the efficiency of single-junction PSCs has reached a competitive level among all kinds of single-junction solar cells. Carbon-electrode-based PSCs (CPSCs), as one of the most promising constructions for achieving stable economical PSCs, now attract enormous attention for their cost-effectiveness and stability. Here, we briefly review the development of CPSCs and reveal the importance of n-i-p architecture for state-of-the-art CPSCs. However, despite their promising potential, challenges still exist in CPSCs in the n-i-p architecture, which mainly stem from the incompact contact of the hole-transporting layer (HTL)/carbon electrode. Thus, new carbon materials and/or novel manufacturing methods should be proposed. In addition, HTL is yet to be appropriate for state-of-the-art CPSCs because the fabrication of carbon electrode could result in the destruction of the underlayer. To further enhance the performance of CPSCs, both the HTL and electron transport layer as well as their interfaces with perovskite active layer need to be improved. We recommend that the perovskite active layer, with its long carrier lifetime, strong carrier transport capability, and long-term stability, is necessary as well for improved performance of CPSCs. We also highlight current researches on CPSCs and provide a systematic review of various types of regulation tools.","PeriodicalId":221966,"journal":{"name":"Materials Futures","volume":"194 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132623438","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Advantages and challenges of self-assembled monolayer as a hole-selective contact for perovskite solar cells 自组装单层作为钙钛矿太阳能电池孔选择触点的优点和挑战

Materials Futures Pub Date : 2023-02-13 DOI: 10.1088/2752-5724/acbb5a

Songran Wang, Huanxin Guo, Yongzhen Wu

引用次数: 10

Recent advances on two-dimensional metal halide perovskite x-ray detectors 二维金属卤化物钙钛矿x射线探测器的研究进展

Materials Futures Pub Date : 2023-02-08 DOI: 10.1088/2752-5724/acba36

Mingyue Han, Yingrui Xiao, Chao Zhou, Yuxuan Yang, Xiaoxue Wu, Q. Hu, Xi Jin, Wei Zhang, Jinsong Hu, Yanjian Jiang

引用次数: 8

Key bottlenecks and distinct contradictions in fast commercialization of perovskite solar cells 钙钛矿太阳能电池快速商业化的关键瓶颈和明显矛盾

Materials Futures Pub Date : 2023-02-08 DOI: 10.1088/2752-5724/acba35

Wenguang Liu, Hasan Raza, X. Hu, Sanwan Liu, Zonghao Liu, Wei Chen

引用次数: 10

Quenched-in liquid in glass 玻璃中淬火的液体

Materials Futures Pub Date : 2023-02-03 DOI: 10.1088/2752-5724/acb8cf

Qing Wang, Ying-Hui Shang, Yong Yang

引用次数: 2

Instability of solution-processed perovskite films: origin and mitigation strategies 溶液处理钙钛矿薄膜的不稳定性:起源和缓解策略

Materials Futures Pub Date : 2023-02-02 DOI: 10.1088/2752-5724/acb838

Shuo Wang, Minghua Li, Yanjian Jiang, Jinsong Hu

引用次数: 8

Strategies for fitting accurate machine-learned inter-atomic potentials for solid electrolytes 拟合固体电解质精确的机器学习原子间电位的策略

Materials Futures Pub Date : 2023-01-20 DOI: 10.1088/2752-5724/acb506

Juefan Wang, Abhishek A. Panchal, P. Canepa

{"title":"Strategies for fitting accurate machine-learned inter-atomic potentials for solid electrolytes","authors":"Juefan Wang, Abhishek A. Panchal, P. Canepa","doi":"10.1088/2752-5724/acb506","DOIUrl":"https://doi.org/10.1088/2752-5724/acb506","url":null,"abstract":"Ion transport in materials is routinely probed through several experimental techniques, which introduce variability in reported ionic diffusivities and conductivities. The computational prediction of ionic diffusivities and conductivities helps in identifying good ionic conductors, and suitable solid electrolytes (SEs), thus establishing firm structure-property relationships. Machine-learned potentials are an attractive strategy to extend the capabilities of accurate ab initio molecular dynamics (AIMD) to longer simulations for larger systems, enabling the study of ion transport at lower temperatures. However, machine-learned potentials being in their infancy, critical assessments of their predicting capabilities are rare. Here, we identified the main factors controlling the quality of a machine-learning potential based on the moment tensor potential formulation, when applied to the properties of ion transport in ionic conductors, such as SEs. Our results underline the importance of high-quality and diverse training sets required to fit moment tensor potentials. We highlight the importance of considering intrinsic defects which may occur in SEs. We demonstrate the limitations posed by short-timescale and high-temperature AIMD simulations to predict the room-temperature properties of materials.","PeriodicalId":221966,"journal":{"name":"Materials Futures","volume":"204 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131742003","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Anode-less all-solid-state batteries: recent advances and future outlook 无阳极全固态电池:最新进展和未来展望

Materials Futures Pub Date : 2023-01-17 DOI: 10.1088/2752-5724/acb3e8

N. Lee, Jihoon Oh, J. Choi

引用次数: 5